#!/bin/bash

#
# 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.
#

namedir=`echo $HDFS_CONF_dfs_namenode_name_dir | perl -pe 's#file://##'`
if [ ! -d $namedir ]; then
  echo "Namenode name directory not found: $namedir"
  exit 2
fi

if [ -z "$CLUSTER_NAME" ]; then
  echo "Cluster name not specified"
  exit 2
fi

if [ "`ls -A $namedir`" == "" ]; then
  echo "Formatting namenode name directory: $namedir"
  $HADOOP_PREFIX/bin/hdfs --config $HADOOP_CONF_DIR namenode -format $CLUSTER_NAME 
fi

$HADOOP_PREFIX/bin/hdfs --config $HADOOP_CONF_DIR namenode
