org.apache.flume.sink.hdfs
Class HDFSEventSink

java.lang.Object
  extended by org.apache.flume.sink.AbstractSink
      extended by org.apache.flume.sink.hdfs.HDFSEventSink
All Implemented Interfaces:
Configurable, LifecycleAware, PollableSink, Sink

public class HDFSEventSink
extends AbstractSink
implements PollableSink, Configurable


Nested Class Summary
 
Nested classes/interfaces inherited from interface org.apache.flume.PollableSink
PollableSink.Status
 
Constructor Summary
HDFSEventSink()
           
HDFSEventSink(HDFSWriterFactory newWriterFactory)
           
 
Method Summary
 void configure(Context context)
           
 PollableSink.Status process()
          Pull events out of channel and send it to HDFS - take at the most txnEventMax, that's the maximum #events to hold in channel for a given transaction - find the corresponding bucket for the event, ensure the file is open - extract the pay-load and append to HDFS file
 void start()
           Starts a service or component.
 void stop()
           Stops a service or component.
 
Methods inherited from class org.apache.flume.sink.AbstractSink
getChannel, getLifecycleState, setChannel
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.apache.flume.Sink
getChannel, setChannel
 
Methods inherited from interface org.apache.flume.lifecycle.LifecycleAware
getLifecycleState
 

Constructor Detail

HDFSEventSink

public HDFSEventSink()

HDFSEventSink

public HDFSEventSink(HDFSWriterFactory newWriterFactory)
Method Detail

configure

public void configure(Context context)
Specified by:
configure in interface Configurable

process

public PollableSink.Status process()
                            throws EventDeliveryException
Pull events out of channel and send it to HDFS - take at the most txnEventMax, that's the maximum #events to hold in channel for a given transaction - find the corresponding bucket for the event, ensure the file is open - extract the pay-load and append to HDFS file

Specified by:
process in interface PollableSink
Throws:
EventDeliveryException

stop

public void stop()
Description copied from interface: LifecycleAware

Stops a service or component.

Implementations should determine the result of any stop logic and effect the return value of LifecycleAware.getLifecycleState() accordingly.

Specified by:
stop in interface LifecycleAware
Overrides:
stop in class AbstractSink

start

public void start()
Description copied from interface: LifecycleAware

Starts a service or component.

Implementations should determine the result of any start logic and effect the return value of LifecycleAware.getLifecycleState() accordingly.

Specified by:
start in interface LifecycleAware
Overrides:
start in class AbstractSink


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