org.apache.hadoop.chukwa.datacollection.writer
Class PipelineStageWriter

java.lang.Object
  extended by org.apache.hadoop.chukwa.datacollection.writer.PipelineStageWriter
All Implemented Interfaces:
ChukwaWriter

public class PipelineStageWriter
extends Object
implements ChukwaWriter

A pipeline of Pipelineable writers Controlled by option 'chukwaCollector.pipeline', which should be a comma- separated list of classnames.


Nested Class Summary
 
Nested classes/interfaces inherited from interface org.apache.hadoop.chukwa.datacollection.writer.ChukwaWriter
ChukwaWriter.COMMIT_PENDING, ChukwaWriter.CommitStatus
 
Field Summary
 
Fields inherited from interface org.apache.hadoop.chukwa.datacollection.writer.ChukwaWriter
COMMIT_FAIL, COMMIT_OK
 
Constructor Summary
PipelineStageWriter()
           
 
Method Summary
 ChukwaWriter.CommitStatus add(List<Chunk> chunks)
          Called repeatedly with data that should be serialized.
 void close()
          Called once, indicating that the writer should close files and prepare to exit.
 void init(org.apache.hadoop.conf.Configuration conf)
          Called once to initialize this writer.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

PipelineStageWriter

public PipelineStageWriter()
Method Detail

add

public ChukwaWriter.CommitStatus add(List<Chunk> chunks)
                              throws WriterException
Description copied from interface: ChukwaWriter
Called repeatedly with data that should be serialized. Subclasses may assume that init() will be called before any calls to add(), and that add() won't be called after close().

Specified by:
add in interface ChukwaWriter
Returns:
Throws:
WriterException

close

public void close()
           throws WriterException
Description copied from interface: ChukwaWriter
Called once, indicating that the writer should close files and prepare to exit.

Specified by:
close in interface ChukwaWriter
Throws:
WriterException

init

public void init(org.apache.hadoop.conf.Configuration conf)
          throws WriterException
Description copied from interface: ChukwaWriter
Called once to initialize this writer.

Specified by:
init in interface ChukwaWriter
Throws:
WriterException


Copyright © ${year} The Apache Software Foundation