org.apache.storm.hdfs.bolt

Class HdfsBolt

java.lang.Object

org.apache.storm.topology.base.BaseComponent

org.apache.storm.topology.base.BaseRichBolt

org.apache.storm.hdfs.bolt.AbstractHdfsBolt

org.apache.storm.hdfs.bolt.HdfsBolt

All Implemented Interfaces:

Serializable, IBolt, IComponent, IRichBolt

public class HdfsBolt
extends AbstractHdfsBolt

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.storm.hdfs.bolt.AbstractHdfsBolt

collector, configKey, fileNameFormat, fileRetryCount, fs, fsUrl, hdfsConfig, offset, rotation, rotationActions, rotationPolicy, rotationTimer, syncPolicy, tickTupleInterval, writeLock

Constructor Summary

Constructors

Constructor and Description
HdfsBolt()

Method Summary

Modifier and Type	Method and Description
HdfsBolt	addRotationAction(RotationAction action)
protected void	closeOutputFile()
protected org.apache.hadoop.fs.Path	createOutputFile()
void	doPrepare(Map conf, TopologyContext topologyContext, OutputCollector collector)
protected void	syncTuples() Make the best effort to sync written data to the underlying file system.
HdfsBolt	withConfigKey(String configKey)
HdfsBolt	withFileNameFormat(FileNameFormat fileNameFormat)
HdfsBolt	withFsUrl(String fsUrl)
HdfsBolt	withRecordFormat(RecordFormat format)
HdfsBolt	withRetryCount(int fileRetryCount)
HdfsBolt	withRotationPolicy(FileRotationPolicy rotationPolicy)
HdfsBolt	withSyncPolicy(SyncPolicy syncPolicy)
HdfsBolt	withTickTupleIntervalSeconds(int interval)
protected void	writeTuple(Tuple tuple) writes a tuple to the underlying filesystem but makes no guarantees about syncing data.

Methods inherited from class org.apache.storm.hdfs.bolt.AbstractHdfsBolt

cleanup, declareOutputFields, execute, getComponentConfiguration, prepare, rotateOutputFile

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HdfsBolt

public HdfsBolt()

Method Detail

withFsUrl

public HdfsBolt withFsUrl(String fsUrl)

withConfigKey

public HdfsBolt withConfigKey(String configKey)

withFileNameFormat

public HdfsBolt withFileNameFormat(FileNameFormat fileNameFormat)

withRecordFormat

public HdfsBolt withRecordFormat(RecordFormat format)

withSyncPolicy

public HdfsBolt withSyncPolicy(SyncPolicy syncPolicy)

withRotationPolicy

public HdfsBolt withRotationPolicy(FileRotationPolicy rotationPolicy)

addRotationAction

public HdfsBolt addRotationAction(RotationAction action)

withTickTupleIntervalSeconds

public HdfsBolt withTickTupleIntervalSeconds(int interval)

withRetryCount

public HdfsBolt withRetryCount(int fileRetryCount)

doPrepare

public void doPrepare(Map conf,
                      TopologyContext topologyContext,
                      OutputCollector collector)
               throws IOException

Specified by:

doPrepare in class AbstractHdfsBolt

Throws:

IOException

syncTuples

protected void syncTuples()
                   throws IOException

Description copied from class: AbstractHdfsBolt

Make the best effort to sync written data to the underlying file system. Concrete classes should very clearly state the file state that sync guarantees. For example, HdfsBolt can make a much stronger guarantee than SequenceFileBolt.

Specified by:

syncTuples in class AbstractHdfsBolt

Throws:

IOException

writeTuple

protected void writeTuple(Tuple tuple)
                   throws IOException

Description copied from class: AbstractHdfsBolt

writes a tuple to the underlying filesystem but makes no guarantees about syncing data.

this.offset is also updated to reflect additional data written

Specified by:

writeTuple in class AbstractHdfsBolt

Throws:

IOException

closeOutputFile

protected void closeOutputFile()
                        throws IOException

Specified by:

closeOutputFile in class AbstractHdfsBolt

Throws:

IOException

createOutputFile

protected org.apache.hadoop.fs.Path createOutputFile()
                                              throws IOException

Specified by:

createOutputFile in class AbstractHdfsBolt

Throws:

IOException