/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.drill.exec.physical.impl.agg;

import org.apache.drill.categories.OperatorTest;
import org.apache.drill.common.logical.data.NamedExpression;
import org.apache.drill.common.types.TypeProtos;
import org.apache.drill.exec.physical.config.StreamingAggregate;
import org.apache.drill.exec.physical.impl.BaseTestOpBatchEmitOutcome;
import org.apache.drill.exec.physical.impl.MockRecordBatch;
import org.apache.drill.exec.physical.impl.aggregate.StreamingAggBatch;
import org.apache.drill.exec.record.BatchSchema;
import org.apache.drill.exec.record.RecordBatch;
import org.apache.drill.exec.record.metadata.TupleMetadata;
import org.apache.drill.test.rowSet.DirectRowSet;
import org.apache.drill.test.rowSet.RowSet;
import org.apache.drill.test.rowSet.RowSetComparison;
import org.apache.drill.test.rowSet.schema.SchemaBuilder;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import java.util.ArrayList;

import static org.apache.drill.exec.record.RecordBatch.IterOutcome.EMIT;
import static org.apache.drill.exec.record.RecordBatch.IterOutcome.OK_NEW_SCHEMA;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

@Category(OperatorTest.class)
public class TestStreamingAggEmitOutcome extends BaseTestOpBatchEmitOutcome {
  //private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(TestStreamingAggEmitOutcome.class);
  protected static TupleMetadata resultSchema;
  protected static TupleMetadata resultSchemaNoGroupBy;

  @BeforeClass
  public static void setUpBeforeClass2() throws Exception {
    resultSchema = new SchemaBuilder()
        .add("name", TypeProtos.MinorType.VARCHAR)
        .addNullable("total_sum", TypeProtos.MinorType.BIGINT)
        .buildSchema();
    resultSchemaNoGroupBy = new SchemaBuilder()
        .addNullable("total_sum", TypeProtos.MinorType.BIGINT)
        .buildSchema();
  }

  /**
   * Verifies that if StreamingAggBatch receives empty batches with OK_NEW_SCHEMA and EMIT outcome then it correctly produces
   * empty batches as output. First empty batch will be with OK_NEW_SCHEMA and second will be with EMIT outcome.
   */
  @Test
  public void t1_testStreamingAggrEmptyBatchEmitOutcome() {
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(OK_NEW_SCHEMA);
    inputOutcomes.add(OK_NEW_SCHEMA);
    inputOutcomes.add(EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name"),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);
  }

  /**
   * Verifies that if StreamingAgg receives a RecordBatch with EMIT outcome post build schema phase then it produces
   * output for those input batch correctly. The first output batch will always be returned with OK_NEW_SCHEMA
   * outcome followed by EMIT with empty batch. The test verifies the output order with the expected baseline.
   */
  @Test
  public void t2_testStreamingAggrNonEmptyBatchEmitOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(13, 130, "item13")
      .addRow(13, 130, "item13")
      .addRow(2, 20, "item2")
      .addRow(2, 20, "item2")
      .addRow(4, 40, "item4")
      .build();

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchema)
      .addRow("item1", (long)11)
      .addRow("item13", (long)286)
      .addRow("item2", (long)44)
      .addRow("item4", (long)44)
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name"),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    // Data before EMIT is returned with an OK_NEW_SCHEMA.
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(4, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    // EMIT comes with an empty batch
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    // Release memory for row sets
    nonEmptyInputRowSet2.clear();
    expectedRowSet.clear();
  }

  @Test
  public void t3_testStreamingAggrEmptyBatchFollowedByNonEmptyBatchEmitOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(13, 130, "item13")
      .addRow(0, 1300, "item13")
      .addRow(2, 20, "item2")
      .addRow(0, 2000, "item2")
      .addRow(4, 40, "item4")
      .addRow(0, 4000, "item4")
      .build();

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchema)
      .addRow("item13", (long)1443)
      .addRow("item2", (long)2022)
      .addRow("item4", (long)4044)
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name"),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(3, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    // Release memory for row sets
    nonEmptyInputRowSet2.clear();
    expectedRowSet.clear();
  }

  @Test
  public void t4_testStreamingAggrMultipleEmptyBatchFollowedByNonEmptyBatchEmitOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(13, 130, "item13")
      .addRow(0, 0, "item13")
      .addRow(1, 33000, "item13")
      .addRow(2, 20, "item2")
      .addRow(0, 0, "item2")
      .addRow(1, 11000, "item2")
      .addRow(4, 40, "item4")
      .build();

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchema)
      .addRow("item13", (long)33144)
      .addRow("item2", (long)11023)
      .addRow("item4", (long)44)
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name"),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(3, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    // Release memory for row sets
    nonEmptyInputRowSet2.clear();
    expectedRowSet.clear();
  }

  /**
   * Verifies that if StreamingAggr receives multiple non-empty record batch with EMIT outcome in between then it produces
   * output for those input batch correctly. In this case it receives first non-empty batch with OK_NEW_SCHEMA in
   * buildSchema phase followed by an empty batch with EMIT outcome. For this combination it produces output for the
   * record received so far along with EMIT outcome. Then it receives second non-empty batch with OK outcome and
   * produces output for it differently. The test validates that for each output received the order of the records are
   * correct.
   * @throws Exception
   */
  @Test
  public void t5_testStreamingAgrResetsAfterFirstEmitOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 20, "item2")
      .addRow(2, 20, "item2")
      .addRow(3, 30, "item3")
      .addRow(3, 30, "item3")
      .addRow(3, 30, "item3")
      .addRow(3, 30, "item3")
      .addRow(3, 30, "item3")
      .addRow(3, 30, "item3")
      .addRow(3, 30, "item3")
      .addRow(3, 30, "item3")
      .addRow(3, 30, "item3")
      .addRow(3, 30, "item3")
      .build();

    final RowSet.SingleRowSet expectedRowSet1 = operatorFixture.rowSetBuilder(resultSchema)
      .addRow("item1", (long)11)
      .build();

    final RowSet.SingleRowSet expectedRowSet2 = operatorFixture.rowSetBuilder(resultSchema)
      .addRow("item2", (long)44)
      .addRow("item3", (long)330)
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name"),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet1).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(2, strAggBatch.getRecordCount());

    actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet2).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    // Release memory for row sets
    nonEmptyInputRowSet2.clear();
    expectedRowSet2.clear();
    expectedRowSet1.clear();
  }

  /**
   * Verifies that if StreamingAggr receives multiple non-empty record batch with EMIT outcome in between then it produces
   * output for those input batch correctly. In this case it receives first non-empty batch with OK_NEW_SCHEMA in
   * buildSchema phase followed by an empty batch with EMIT outcome. For this combination it produces output for the
   * record received so far along with EMIT outcome. Then it receives second non-empty batch with OK outcome and
   * produces output for it differently. The test validates that for each output received the order of the records are
   * correct.
   * @throws Exception
   */
  @Test
  public void t6_testStreamingAggrOkFollowedByNone() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 20, "item2")
      .addRow(3, 30, "item3")
      .addRow(4, 40, "item4")
      .addRow(4, 40, "item4")
      .addRow(5, 50, "item5")
      .addRow(5, 50, "item5")
      .build();

    final RowSet.SingleRowSet expectedRowSet1 = operatorFixture.rowSetBuilder(resultSchema)
      .addRow("item1", (long)11)
      .build();

    final RowSet.SingleRowSet expectedRowSet2 = operatorFixture.rowSetBuilder(resultSchema)
      .addRow("item2", (long)22)
      .addRow("item3", (long)33)
      .addRow("item4", (long)88)
      .addRow("item5", (long)110)
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name"),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet1).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK);
    assertEquals(4, strAggBatch.getRecordCount());

    actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet2).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    // Release memory for row sets
    nonEmptyInputRowSet2.clear();
    expectedRowSet2.clear();
    expectedRowSet1.clear();
  }

  /**
   * Normal case
   */
  @Test
  public void t7_testStreamingAggrMultipleEMITOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 20, "item2")
      .addRow(3, 30, "item3")
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name"),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(2, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    nonEmptyInputRowSet2.clear();
  }

  /**
   *
   */
  @Test
  public void t8_testStreamingAggrMultipleInputToSingleOutputBatch() {

    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 20, "item2")
      .build();

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchema)
      .addRow("item1", (long)11)
      .addRow("item2", (long)22)
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name"),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(2, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    nonEmptyInputRowSet2.clear();
  }

  /**
   * Verifies scenario where multiple incoming batches received with OK_NEW_SCHEMA, OK, OK, EMIT whose output is split
   * into multiple output batches is handled correctly such that first output is produced with OK_NEW_SCHEMA and then
   * followed by EMIT outcome
   */
  @Test
  public void t8_1_testStreamingAggr_InputSplitToMultipleOutputBatch() {

    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(1, 20, "item1")
      .build();
    final RowSet.SingleRowSet nonEmptyInputRowSet3 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 30, "item2")
      .build();

    final RowSet.SingleRowSet nonEmptyInputRowSet4 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 40, "item2")
      .addRow(2, 50, "item2")
      .addRow(2, 60, "item2")
      .addRow(2, 70, "item2")
      .addRow(3, 100, "item3")
      .addRow(3, 200, "item3")
      .addRow(3, 300, "item3")
      .addRow(3, 400, "item3")
      .build();

    TupleMetadata resultSchema2 = new SchemaBuilder()
      .add("name", TypeProtos.MinorType.VARCHAR)
      .add("id", TypeProtos.MinorType.INT)
      .add("total_count", TypeProtos.MinorType.BIGINT)
      .buildSchema();

    final RowSet.SingleRowSet expectedRowSet1 = operatorFixture.rowSetBuilder(resultSchema2)
      .addRow("item1", 1, (long)2)
      .addRow("item2", 2, (long)5)
      .build();

    final RowSet.SingleRowSet expectedRowSet2 = operatorFixture.rowSetBuilder(resultSchema2)
      .addRow("item3", 3, (long)4)
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(nonEmptyInputRowSet3.container());
    inputContainer.add(nonEmptyInputRowSet4.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name", "id_left", "id"),
      parseExprs("count(cost_left)", "total_count"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());
    strAggBatch.setMaxOutputRowCount(2);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    // Expect OK_NEW_SCHEMA first for all the input batch from second batch onwards since output batch is full after
    // producing 2 groups as output
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(2, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet1).verify(actualRowSet);

    // The last group was produced in different output batch with EMIT outcome
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());
    actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet2).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    nonEmptyInputRowSet2.clear();
    nonEmptyInputRowSet3.clear();
    nonEmptyInputRowSet4.clear();

    expectedRowSet1.clear();
    expectedRowSet2.clear();
  }

  /**
   * Verifies scenario where multiple incoming batches received with OK_NEW_SCHEMA, OK, OK, EMIT whose output is split
   * into multiple output batches and incoming batches received with OK,OK,EMIT whose output is also split across
   * multiple output batches is handled correctly.
   */
  @Test
  public void t8_2_testStreamingAggr_Inputs_OK_EMIT_SplitToMultipleOutputBatch() {

    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(1, 20, "item1")
      .build();
    final RowSet.SingleRowSet nonEmptyInputRowSet3 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 30, "item2")
      .build();

    final RowSet.SingleRowSet nonEmptyInputRowSet4 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 40, "item2")
      .addRow(2, 50, "item2")
      .addRow(2, 60, "item2")
      .addRow(2, 70, "item2")
      .addRow(3, 100, "item3")
      .addRow(3, 200, "item3")
      .addRow(3, 300, "item3")
      .addRow(3, 400, "item3")
      .build();

    final RowSet.SingleRowSet nonEmptyInputRowSet5 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 40, "item2")
      .build();

    final RowSet.SingleRowSet nonEmptyInputRowSet6 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 50, "item2")
      .build();

    final RowSet.SingleRowSet nonEmptyInputRowSet7 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(3, 130, "item3")
      .addRow(3, 130, "item3")
      .addRow(4, 140, "item4")
      .addRow(4, 140, "item4")
      .build();

    TupleMetadata resultSchema2 = new SchemaBuilder()
      .add("name", TypeProtos.MinorType.VARCHAR)
      .add("id", TypeProtos.MinorType.INT)
      .add("total_count", TypeProtos.MinorType.BIGINT)
      .buildSchema();

    final RowSet.SingleRowSet expectedRowSet1 = operatorFixture.rowSetBuilder(resultSchema2)
      .addRow("item1", 1, (long)2)
      .addRow("item2", 2, (long)5)
      .build();

    final RowSet.SingleRowSet expectedRowSet2 = operatorFixture.rowSetBuilder(resultSchema2)
      .addRow("item3", 3, (long)4)
      .build();

    final RowSet.SingleRowSet expectedRowSet3 = operatorFixture.rowSetBuilder(resultSchema2)
      .addRow("item2", 2, (long)2)
      .addRow("item3", 3, (long)2)
      .build();

    final RowSet.SingleRowSet expectedRowSet4 = operatorFixture.rowSetBuilder(resultSchema2)
      .addRow("item4", 4, (long)2)
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(nonEmptyInputRowSet3.container());
    inputContainer.add(nonEmptyInputRowSet4.container());
    inputContainer.add(nonEmptyInputRowSet5.container());
    inputContainer.add(nonEmptyInputRowSet6.container());
    inputContainer.add(nonEmptyInputRowSet7.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name", "id_left", "id"),
      parseExprs("count(cost_left)", "total_count"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());
    strAggBatch.setMaxOutputRowCount(2);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);

    // Output batches for input batch 2 to 5
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(2, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet1).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());
    actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet2).verify(actualRowSet);

    // Output batches for input batch 6 to 8
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK);
    // output batch is full after producing 2 rows
    assertEquals(2, strAggBatch.getRecordCount());
    actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet3).verify(actualRowSet);

    // output batch with pending rows
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());
    actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet4).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    nonEmptyInputRowSet2.clear();
    nonEmptyInputRowSet3.clear();
    nonEmptyInputRowSet4.clear();
    nonEmptyInputRowSet5.clear();
    nonEmptyInputRowSet6.clear();
    nonEmptyInputRowSet7.clear();

    expectedRowSet1.clear();
    expectedRowSet2.clear();
    expectedRowSet3.clear();
    expectedRowSet4.clear();
  }

  /*****************************************************************************************
   Tests for validating regular StreamingAggr behavior with no EMIT outcome
   ******************************************************************************************/
  @Test
  public void t9_testStreamingAgr_WithEmptyNonEmptyBatchesAndOKOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 20, "item1")
      .addRow(13, 130, "item13")
      .addRow(13, 130, "item13")
      .addRow(13, 130, "item13")
      .addRow(130, 1300, "item130")
      .addRow(0, 0, "item130")
      .build();

    final RowSet.SingleRowSet nonEmptyInputRowSet3 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(23, 230, "item23")
      .addRow(3, 33, "item3")
      .addRow(7, 70, "item7")
      .addRow(17, 170, "item7")
      .build();

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchema)
      .addRow("item1", (long)33)
      .addRow("item13", (long)429)
      .addRow("item130", (long)1430)
      .addRow("item23", (long)253)
      .addRow("item3", (long)36)
      .addRow("item7", (long)264)
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet3.container());
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name"),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(6, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    nonEmptyInputRowSet2.clear();
    nonEmptyInputRowSet3.clear();
    expectedRowSet.clear();
  }

  @Test
  public void t10_testStreamingAggrWithEmptyDataSet() {
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        parseExprs("name_left", "name"),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);
  }

  @Test
  public void t10_1_testStreamingAggr_InputSplitToMultipleOutputBatch() {

    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(1, 20, "item1")
      .build();
    final RowSet.SingleRowSet nonEmptyInputRowSet3 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 30, "item2")
      .build();

    final RowSet.SingleRowSet nonEmptyInputRowSet4 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 40, "item2")
      .addRow(2, 50, "item2")
      .addRow(2, 60, "item2")
      .addRow(2, 70, "item2")
      .addRow(3, 100, "item3")
      .addRow(3, 200, "item3")
      .addRow(3, 300, "item3")
      .addRow(3, 400, "item3")
      .build();

    TupleMetadata resultSchema2 = new SchemaBuilder()
      .add("name", TypeProtos.MinorType.VARCHAR)
      .add("id", TypeProtos.MinorType.INT)
      .add("total_count", TypeProtos.MinorType.BIGINT)
      .buildSchema();

    final RowSet.SingleRowSet expectedRowSet1 = operatorFixture.rowSetBuilder(resultSchema2)
      .addRow("item1", 1, (long)2)
      .addRow("item2", 2, (long)5)
      .build();

    final RowSet.SingleRowSet expectedRowSet2 = operatorFixture.rowSetBuilder(resultSchema2)
      .addRow("item3", 3, (long)4)
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(nonEmptyInputRowSet3.container());
    inputContainer.add(nonEmptyInputRowSet4.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      parseExprs("name_left", "name", "id_left", "id"),
      parseExprs("count(cost_left)", "total_count"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());
    strAggBatch.setMaxOutputRowCount(2);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(2, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet1).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK);
    assertEquals(1, strAggBatch.getRecordCount());
    actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet2).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    nonEmptyInputRowSet2.clear();
    nonEmptyInputRowSet3.clear();
    nonEmptyInputRowSet4.clear();

    expectedRowSet1.clear();
    expectedRowSet2.clear();
  }

  /*******************************************************
   * Tests for EMIT with empty batches and no group by
   * (Tests t1-t8 are repeated with no group by)
   *******************************************************/


  /**
   * Repeats t1_testStreamingAggrEmptyBatchEmitOutcome with no group by
   */
  @Test
  public void t11_testStreamingAggrEmptyBatchEmitOutcome() {
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(OK_NEW_SCHEMA);
    inputOutcomes.add(OK_NEW_SCHEMA);
    inputOutcomes.add(EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
        inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        new ArrayList<NamedExpression>(),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
        1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
        operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);
  }

  /**
   Repeats t2_testStreamingAggrNonEmptyBatchEmitOutcome with no group by
   */
  @Test
  public void t12_testStreamingAggrNonEmptyBatchEmitOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
        .addRow(13, 130, "item13")
        .addRow(13, 130, "item13")
        .addRow(2, 20, "item2")
        .addRow(2, 20, "item2")
        .addRow(4, 40, "item4")
        .build();

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
        .addRow((long)385)
        .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
        inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        new ArrayList<NamedExpression>(),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
        1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
        operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    // Data before EMIT is returned with an OK_NEW_SCHEMA.
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    // EMIT comes with an empty batch
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    // Release memory for row sets
    nonEmptyInputRowSet2.clear();
    expectedRowSet.clear();
  }

  /**
   Repeats t3_testStreamingAggrEmptyBatchFollowedByNonEmptyBatchEmitOutcome with no group by
   */
  @Test
  public void t13_testStreamingAggrEmptyBatchFollowedByNonEmptyBatchEmitOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
        .addRow(13, 130, "item13")
        .addRow(0, 1300, "item13")
        .addRow(2, 20, "item2")
        .addRow(0, 2000, "item2")
        .addRow(4, 40, "item4")
        .addRow(0, 4000, "item4")
        .build();

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
        .addRow((long)7509)
        .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
        inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        new ArrayList<NamedExpression>(),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
        1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
        operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    // Release memory for row sets
    nonEmptyInputRowSet2.clear();
    expectedRowSet.clear();
  }

  /**
   Repeats t4_testStreamingAggrMultipleEmptyBatchFollowedByNonEmptyBatchEmitOutcome with no group by
   */
  @Test
  public void t14_testStreamingAggrMultipleEmptyBatchFollowedByNonEmptyBatchEmitOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
        .addRow(13, 130, "item13")
        .addRow(0, 0, "item13")
        .addRow(1, 33000, "item13")
        .addRow(2, 20, "item2")
        .addRow(0, 0, "item2")
        .addRow(1, 11000, "item2")
        .addRow(4, 40, "item4")
        .build();

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
        .addRow((long)44211)
        .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
        inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        new ArrayList<NamedExpression>(),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
        1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
        operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount()); // special batch
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount()); // special batch
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount()); // special batch
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount()); // data batch

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    // Release memory for row sets
    nonEmptyInputRowSet2.clear();
    expectedRowSet.clear();
  }

  /**
   Repeats t5_testStreamingAgrResetsAfterFirstEmitOutcome with no group by
   */
  @Test
  public void t15_testStreamingAgrResetsAfterFirstEmitOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
        .addRow(2, 20, "item2")
        .addRow(2, 20, "item2")
        .addRow(3, 30, "item3")
        .addRow(3, 30, "item3")
        .addRow(3, 30, "item3")
        .addRow(3, 30, "item3")
        .addRow(3, 30, "item3")
        .addRow(3, 30, "item3")
        .addRow(3, 30, "item3")
        .addRow(3, 30, "item3")
        .addRow(3, 30, "item3")
        .addRow(3, 30, "item3")
        .build();

    final RowSet.SingleRowSet expectedRowSet1 = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
        .addRow((long)11)
        .build();

    final RowSet.SingleRowSet expectedRowSet2 = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
        .addRow((long)374)
        .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
        inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        new ArrayList<NamedExpression>(),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
        1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
        operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet1).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());

    actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet2).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    // Release memory for row sets
    nonEmptyInputRowSet2.clear();
    expectedRowSet2.clear();
    expectedRowSet1.clear();
  }

  /**
   Repeats t6_testStreamingAggrOkFollowedByNone with no group by
   */
  @Test
  public void t16_testStreamingAggrOkFollowedByNone() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
        .addRow(2, 20, "item2")
        .addRow(3, 30, "item3")
        .addRow(4, 40, "item4")
        .addRow(4, 40, "item4")
        .addRow(5, 50, "item5")
        .addRow(5, 50, "item5")
        .build();

    final RowSet.SingleRowSet expectedRowSet1 = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
        .addRow((long)11)
        .build();

    final RowSet.SingleRowSet expectedRowSet2 = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
        .addRow((long)253)
        .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
        inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        new ArrayList<NamedExpression>(),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
        1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
        operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet1).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK);
    assertEquals(1, strAggBatch.getRecordCount());

    actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet2).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    // Release memory for row sets
    nonEmptyInputRowSet2.clear();
    expectedRowSet2.clear();
    expectedRowSet1.clear();
  }

  /**
   Repeats t7_testStreamingAggrMultipleEMITOutcome with no group by
   */
  @Test
  public void t17_testStreamingAggrMultipleEMITOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
        .addRow(2, 20, "item2")
        .addRow(3, 30, "item3")
        .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
        inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        new ArrayList<NamedExpression>(),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
        1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
        operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    nonEmptyInputRowSet2.clear();
  }

  /**
   Repeats t8_testStreamingAggrMultipleInputToSingleOutputBatch with no group by
   */
  @Test
  public void t18_testStreamingAggrMultipleInputToSingleOutputBatch() {

    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
        .addRow(2, 20, "item2")
        .build();

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
        .addRow((long)33)
        .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
        inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        new ArrayList<NamedExpression>(),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
        1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
        operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    nonEmptyInputRowSet2.clear();
  }


  /**
   Repeats t9_testStreamingAgr_WithEmptyNonEmptyBatchesAndOKOutcome with no group by
   */
  @Test
  public void t19_testStreamingAgr_WithEmptyNonEmptyBatchesAndOKOutcome() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
        .addRow(2, 20, "item1")
        .addRow(13, 130, "item13")
        .addRow(13, 130, "item13")
        .addRow(13, 130, "item13")
        .addRow(130, 1300, "item130")
        .addRow(0, 0, "item130")
        .build();

    final RowSet.SingleRowSet nonEmptyInputRowSet3 = operatorFixture.rowSetBuilder(inputSchema)
        .addRow(23, 230, "item23")
        .addRow(3, 33, "item3")
        .addRow(7, 70, "item7")
        .addRow(17, 170, "item7")
        .build();

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
        .addRow((long)2445)
        .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet3.container());
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
        inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        new ArrayList<NamedExpression>(),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
        1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
        operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);

    nonEmptyInputRowSet2.clear();
    nonEmptyInputRowSet3.clear();
    expectedRowSet.clear();
  }

  /**
   Repeats t10_testStreamingAggrWithEmptyDataSet with no group by
   */
  @Test
  public void t20_testStreamingAggrWithEmptyDataSet() {
    inputContainer.add(emptyInputRowSet.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
        inputContainer, inputOutcomes, emptyInputRowSet.container().getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
        new ArrayList<NamedExpression>(),
        parseExprs("sum(id_left+cost_left)", "total_sum"),
        1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
        operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK);
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.NONE);
  }

  /**
   Repeats t21_testStreamingAggrRunsofEmpty_NonEmpty_Sv2 with no group by
   */
  @Test
  public void t21_testStreamingAggrRunsofEmpty_NonEmpty_Sv2() {
    TupleMetadata inputSchema_sv2 = new SchemaBuilder()
      .add("id_left", TypeProtos.MinorType.INT)
      .add("cost_left", TypeProtos.MinorType.INT)
      .add("name_left", TypeProtos.MinorType.VARCHAR)
      .withSVMode(BatchSchema.SelectionVectorMode.TWO_BYTE)
      .buildSchema();

    final RowSet.SingleRowSet emptyRowSet_Sv2 = operatorFixture.rowSetBuilder(inputSchema_sv2)
      .withSv2()
      .build();

    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema_sv2)
      .addSelection(false, 2, 20, "item2")
      .addSelection(true, 3, 30, "item3")
      .withSv2()
      .build();

    inputContainer.add(emptyRowSet_Sv2.container());
    inputContainer.add(emptyRowSet_Sv2.container());
    inputContainer.add(emptyRowSet_Sv2.container());
    inputContainer.add(emptyRowSet_Sv2.container());
    inputContainer.add(emptyRowSet_Sv2.container());
    inputContainer.add(nonEmptyInputRowSet2.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.OK);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    inputContainerSv2.add(emptyRowSet_Sv2.getSv2());
    inputContainerSv2.add(emptyRowSet_Sv2.getSv2());
    inputContainerSv2.add(emptyRowSet_Sv2.getSv2());
    inputContainerSv2.add(emptyRowSet_Sv2.getSv2());
    inputContainerSv2.add(emptyRowSet_Sv2.getSv2());
    inputContainerSv2.add(nonEmptyInputRowSet2.getSv2());

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, inputContainerSv2, inputContainer.get(0).getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      new ArrayList<NamedExpression>(),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
      .addRow((long)33)
      .build();

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    // For special batch.
    assertEquals(1, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    nonEmptyInputRowSet2.clear();
    emptyRowSet_Sv2.clear();
    expectedRowSet.clear();
  }

  /**
   Repeats t22_testStreamingAggrRunsOfEmpty_NonEmpty with no group by
   */
  @Test
  public void t22_testStreamingAggrRunsOfEmpty_NonEmpty() {
    final RowSet.SingleRowSet nonEmptyInputRowSet2 = operatorFixture.rowSetBuilder(inputSchema)
      .addRow(2, 20, "item2")
      .build();

    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(emptyInputRowSet.container());
    inputContainer.add(nonEmptyInputRowSet2.container());

    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);
    inputOutcomes.add(RecordBatch.IterOutcome.EMIT);

    final RowSet.SingleRowSet expectedRowSet = operatorFixture.rowSetBuilder(resultSchemaNoGroupBy)
      .build();

    final MockRecordBatch mockInputBatch = new MockRecordBatch(operatorFixture.getFragmentContext(), opContext,
      inputContainer, inputOutcomes, inputContainer.get(0).getSchema());

    final StreamingAggregate streamAggrConfig = new StreamingAggregate(null,
      new ArrayList<NamedExpression>(),
      parseExprs("sum(id_left+cost_left)", "total_sum"),
      1.0f);

    final StreamingAggBatch strAggBatch = new StreamingAggBatch(streamAggrConfig, mockInputBatch,
      operatorFixture.getFragmentContext());

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.OK_NEW_SCHEMA);
    assertEquals(1, strAggBatch.getRecordCount());

    RowSet actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(0, strAggBatch.getRecordCount());
    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());

    actualRowSet = DirectRowSet.fromContainer(strAggBatch.getContainer());
    new RowSetComparison(expectedRowSet).verify(actualRowSet);

    assertTrue(strAggBatch.next() == RecordBatch.IterOutcome.EMIT);
    assertEquals(1, strAggBatch.getRecordCount());

    nonEmptyInputRowSet2.clear();
    expectedRowSet.clear();
  }
}
