[
https://issues.apache.org/jira/browse/FLUME-2414?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andy Rosa updated FLUME-2414:
-----------------------------
Description:
Currently we are using HDFS with just 1 datanode for aggregation 10 HDD into
one file system. When that datanode became unavailable for some small amount of
time - below exception starts throwing endlessly.
{code} java.io.IOException: DFSOutputStream is closed
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.sync(DFSClient.java:3879)
at
org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:97)
at
org.apache.flume.sink.hdfs.HDFSDataStream.sync(HDFSDataStream.java:117)
at org.apache.flume.sink.hdfs.BucketWriter$5.call(BucketWriter.java:369)
at org.apache.flume.sink.hdfs.BucketWriter$5.call(BucketWriter.java:366)
at
org.apache.flume.sink.hdfs.BucketWriter$8$1.run(BucketWriter.java:559)
at
org.apache.flume.sink.hdfs.BucketWriter.runPrivileged(BucketWriter.java:161)
at
org.apache.flume.sink.hdfs.BucketWriter.access$1000(BucketWriter.java:57)
at org.apache.flume.sink.hdfs.BucketWriter$8.call(BucketWriter.java:556)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722){code}
As i understand issue with endless .close attempts already solved, but issue
with endless .doFlush() is still there.
I writes some rough hot-fix:
{code}
/**
* doFlush() must only be called by flush()
* @throws IOException
*/
private void doFlush() throws IOException, InterruptedException {
try{
LOG.info("doFlush() called.
doFlushErrorCounter="+doFlushErrorCounter.get());
callWithTimeout(new CallRunner<Void>() {
@Override
public Void call() throws Exception {
writer.sync(); // could block
return null;
}
});
LOG.info("doFinished() called.
doFlushErrorCounter="+doFlushErrorCounter.get());
} catch (IOException e){
int errorsCount = doFlushErrorCounter.incrementAndGet();
LOG.error("IO EXCEPTION DURING FLUSH. Errors Count: "+errorsCount, e);
if(errorsCount<=DO_FLUSH_ERROR_LIMIT){
Thread.sleep(DO_FLUSH_ERROR_SLEEP_TIME_MSEC);
throw e;
}
}
doFlushErrorCounter.set(0);
batchCounter = 0;
}
{code}
With this rough fix i just skipping .doFlush call after some numbers of
attempts. However i found that after some time some groups of logs still stops
writing.
My flume configuration below
{code}
agent.sources = avroSource
agent.channels = memoryChannel
agent.sinks = hdfsSink
# SOURCE
agent.sources.avroSource.type=avro
agent.sources.avroSource.bind=1.1.1.1
agent.sources.avroSource.port=11111
agent.sources.avroSource.channels=memoryChannel
agent.sources.avroSource.interceptors = i1
agent.sources.avroSource.interceptors.i1.type = timestamp
# CHANNEL
agent.channels.memoryChannel.type=memory
agent.channels.memoryChannel.capacity=100000
agent.channels.memoryChannel.transactionCapacity=10000
#SINK
agent.sinks.hdfsSink.type=hdfs
agent.sinks.hdfsSink.channel=memoryChannel
agent.sinks.hdfsSink.hdfs.path=hdfs://hadoop-master:9000/globallog/%{env}/%{name}/date=%d%m%y
agent.sinks.hdfsSink.hdfs.rollInterval=3600
agent.sinks.hdfsSink.hdfs.rollSize=64000000
agent.sings.hdfsSink.hdfs.idleTimeout=3600
agent.sings.hdfsSink.hdfs.batchSize=1000
agent.sings.hdfsSink.hdfs.maxOpenFiles=200
agent.sings.hdfsSink.hdfs.callTimeout=240000
agent.sinks.hdfsSink.hdfs.inUsePrefix=.
agent.sinks.hdfsSink.hdfs.rollCount=0
agent.sinks.hdfsSink.hdfs.writeFormat=Text
agent.sinks.hdfsSink.hdfs.fileType=DataStream
{code}
When i trigger shutdown, agent-shutdown-hook print lot of logs about old still
opened files
{code}
2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/FILES_WRONG_SIZE/date=180614/FlumeData
2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/FILES_WRONG_SIZE/date=180614/.FlumeData.1403049638474.tmp
2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_INCORRECT_MD5_DIGEST/date=180614/FlumeData
2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_INCORRECT_MD5_DIGEST/date=180614/.FlumeData.1403050060059.tmp
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_NULL/date=180614/FlumeData
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_NULL/date=180614/.FlumeData.1403054517880.tmp
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/REST_MONITORING/date=180614/FlumeData
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/REST_MONITORING/date=180614/.FlumeData.1403049621998.tmp
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=180614/FlumeData
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=180614/.FlumeData.1403049621963.tmp
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=190614/FlumeData
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=190614/.FlumeData.1403136037015.tmp
2014-06-24 05:59:29,178 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_INCORRECT_MD5_DIGEST/date=190614/FlumeData
...
...
...
{code}
But as per log data that files was never fail on .sync()
was:
Currently we are using HDFS with just 1 datanode for aggregation 10 HDD into
one file system. When that datanode became unavailable for some small amount of
time - below exception starts throwing endlessly.
{code} java.io.IOException: DFSOutputStream is closed
at
org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.sync(DFSClient.java:3879)
at
org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:97)
at
org.apache.flume.sink.hdfs.HDFSDataStream.sync(HDFSDataStream.java:117)
at org.apache.flume.sink.hdfs.BucketWriter$5.call(BucketWriter.java:369)
at org.apache.flume.sink.hdfs.BucketWriter$5.call(BucketWriter.java:366)
at
org.apache.flume.sink.hdfs.BucketWriter$8$1.run(BucketWriter.java:559)
at
org.apache.flume.sink.hdfs.BucketWriter.runPrivileged(BucketWriter.java:161)
at
org.apache.flume.sink.hdfs.BucketWriter.access$1000(BucketWriter.java:57)
at org.apache.flume.sink.hdfs.BucketWriter$8.call(BucketWriter.java:556)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722){code}
As i understand issue with endless .close attempts already solved, but issue
with endless .doFlush() is still there.
I writes some rough hot-fix:
{code}
/**
* doFlush() must only be called by flush()
* @throws IOException
*/
private void doFlush() throws IOException, InterruptedException {
try{
LOG.info("doFlush() called.
doFlushErrorCounter="+doFlushErrorCounter.get());
callWithTimeout(new CallRunner<Void>() {
@Override
public Void call() throws Exception {
writer.sync(); // could block
return null;
}
});
LOG.info("doFinished() called.
doFlushErrorCounter="+doFlushErrorCounter.get());
} catch (IOException e){
int errorsCount = doFlushErrorCounter.incrementAndGet();
LOG.error("IO EXCEPTION DURING FLUSH. Errors Count: "+errorsCount, e);
if(errorsCount<=DO_FLUSH_ERROR_LIMIT){
Thread.sleep(DO_FLUSH_ERROR_SLEEP_TIME_MSEC);
throw e;
}
}
doFlushErrorCounter.set(0);
batchCounter = 0;
}
{code}
With this rough fix i just skipping .doFlush call after some numbers of
attempts. However i found that after some time some groups of logs still stops
writing.
My flume configuration below
{code}
agent.sources = avroSource
agent.channels = memoryChannel
agent.sinks = hdfsSink
# SOURCE
agent.sources.avroSource.type=avro
agent.sources.avroSource.bind=1.1.1.1
agent.sources.avroSource.port=11111
agent.sources.avroSource.channels=memoryChannel
agent.sources.avroSource.interceptors = i1
agent.sources.avroSource.interceptors.i1.type = timestamp
# CHANNEL
agent.channels.memoryChannel.type=memory
agent.channels.memoryChannel.capacity=100000
agent.channels.memoryChannel.transactionCapacity=10000
#SINK
agent.sinks.hdfsSink.type=hdfs
agent.sinks.hdfsSink.channel=memoryChannel
agent.sinks.hdfsSink.hdfs.path=hdfs://hadoop-master:9000/globallog/%{env}/%{name}/date=%d%m%y
agent.sinks.hdfsSink.hdfs.rollInterval=3600
agent.sinks.hdfsSink.hdfs.rollSize=64000000
agent.sings.hdfsSink.hdfs.idleTimeout=3600
agent.sings.hdfsSink.hdfs.batchSize=1000
agent.sings.hdfsSink.hdfs.maxOpenFiles=200
agent.sings.hdfsSink.hdfs.callTimeout=240000
agent.sinks.hdfsSink.hdfs.inUsePrefix=.
agent.sinks.hdfsSink.hdfs.rollCount=0
agent.sinks.hdfsSink.hdfs.writeFormat=Text
agent.sinks.hdfsSink.hdfs.fileType=DataStream
{code}
When i trigger shutdown, agent-shutdown-hook print lot of logs about old still
opened files
{code}
2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/FILES_WRONG_SIZE/date=180614/FlumeData
2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/FILES_WRONG_SIZE/date=180614/.FlumeData.1403049638474.tmp
2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_INCORRECT_MD5_DIGEST/date=180614/FlumeData
2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_INCORRECT_MD5_DIGEST/date=180614/.FlumeData.1403050060059.tmp
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_NULL/date=180614/FlumeData
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_NULL/date=180614/.FlumeData.1403054517880.tmp
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/REST_MONITORING/date=180614/FlumeData
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/REST_MONITORING/date=180614/.FlumeData.1403049621998.tmp
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=180614/FlumeData
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=180614/.FlumeData.1403049621963.tmp
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=190614/FlumeData
2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
HDFSWriter is already closed:
hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=190614/.FlumeData.1403136037015.tmp
2014-06-24 05:59:29,178 (agent-shutdown-hook) [INFO -
org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)] Closing
hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_INCORRECT_MD5_DIGEST/date=190614/FlumeData
{code}
But as per log data that files was never fail on .sync()
> java.io.IOException: DFSOutputStream is closed on HDFSDataStream.sync
> ---------------------------------------------------------------------
>
> Key: FLUME-2414
> URL: https://issues.apache.org/jira/browse/FLUME-2414
> Project: Flume
> Issue Type: Bug
> Components: Sinks+Sources
> Affects Versions: v1.4.0, v1.5.0
> Environment: Java(TM) SE Runtime Environment (build 1.7.0_01-b08)
> Hadoop 1.2.1 with just 1 data-node
> Reporter: Andy Rosa
>
> Currently we are using HDFS with just 1 datanode for aggregation 10 HDD into
> one file system. When that datanode became unavailable for some small amount
> of time - below exception starts throwing endlessly.
> {code} java.io.IOException: DFSOutputStream is closed
> at
> org.apache.hadoop.hdfs.DFSClient$DFSOutputStream.sync(DFSClient.java:3879)
> at
> org.apache.hadoop.fs.FSDataOutputStream.sync(FSDataOutputStream.java:97)
> at
> org.apache.flume.sink.hdfs.HDFSDataStream.sync(HDFSDataStream.java:117)
> at org.apache.flume.sink.hdfs.BucketWriter$5.call(BucketWriter.java:369)
> at org.apache.flume.sink.hdfs.BucketWriter$5.call(BucketWriter.java:366)
> at
> org.apache.flume.sink.hdfs.BucketWriter$8$1.run(BucketWriter.java:559)
> at
> org.apache.flume.sink.hdfs.BucketWriter.runPrivileged(BucketWriter.java:161)
> at
> org.apache.flume.sink.hdfs.BucketWriter.access$1000(BucketWriter.java:57)
> at org.apache.flume.sink.hdfs.BucketWriter$8.call(BucketWriter.java:556)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:722){code}
> As i understand issue with endless .close attempts already solved, but issue
> with endless .doFlush() is still there.
> I writes some rough hot-fix:
> {code}
> /**
> * doFlush() must only be called by flush()
> * @throws IOException
> */
> private void doFlush() throws IOException, InterruptedException {
> try{
> LOG.info("doFlush() called.
> doFlushErrorCounter="+doFlushErrorCounter.get());
> callWithTimeout(new CallRunner<Void>() {
> @Override
> public Void call() throws Exception {
> writer.sync(); // could block
> return null;
> }
> });
> LOG.info("doFinished() called.
> doFlushErrorCounter="+doFlushErrorCounter.get());
> } catch (IOException e){
> int errorsCount = doFlushErrorCounter.incrementAndGet();
> LOG.error("IO EXCEPTION DURING FLUSH. Errors Count: "+errorsCount, e);
> if(errorsCount<=DO_FLUSH_ERROR_LIMIT){
> Thread.sleep(DO_FLUSH_ERROR_SLEEP_TIME_MSEC);
> throw e;
> }
> }
> doFlushErrorCounter.set(0);
> batchCounter = 0;
> }
> {code}
> With this rough fix i just skipping .doFlush call after some numbers of
> attempts. However i found that after some time some groups of logs still
> stops writing.
> My flume configuration below
> {code}
> agent.sources = avroSource
> agent.channels = memoryChannel
> agent.sinks = hdfsSink
> # SOURCE
> agent.sources.avroSource.type=avro
> agent.sources.avroSource.bind=1.1.1.1
> agent.sources.avroSource.port=11111
> agent.sources.avroSource.channels=memoryChannel
> agent.sources.avroSource.interceptors = i1
> agent.sources.avroSource.interceptors.i1.type = timestamp
> # CHANNEL
> agent.channels.memoryChannel.type=memory
> agent.channels.memoryChannel.capacity=100000
> agent.channels.memoryChannel.transactionCapacity=10000
> #SINK
> agent.sinks.hdfsSink.type=hdfs
> agent.sinks.hdfsSink.channel=memoryChannel
> agent.sinks.hdfsSink.hdfs.path=hdfs://hadoop-master:9000/globallog/%{env}/%{name}/date=%d%m%y
> agent.sinks.hdfsSink.hdfs.rollInterval=3600
> agent.sinks.hdfsSink.hdfs.rollSize=64000000
> agent.sings.hdfsSink.hdfs.idleTimeout=3600
> agent.sings.hdfsSink.hdfs.batchSize=1000
> agent.sings.hdfsSink.hdfs.maxOpenFiles=200
> agent.sings.hdfsSink.hdfs.callTimeout=240000
> agent.sinks.hdfsSink.hdfs.inUsePrefix=.
> agent.sinks.hdfsSink.hdfs.rollCount=0
> agent.sinks.hdfsSink.hdfs.writeFormat=Text
> agent.sinks.hdfsSink.hdfs.fileType=DataStream
> {code}
> When i trigger shutdown, agent-shutdown-hook print lot of logs about old
> still opened files
> {code}
> 2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)]
> Closing
> hdfs://hadoop-master:9000/globallog/prod/FILES_WRONG_SIZE/date=180614/FlumeData
> 2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
> HDFSWriter is already closed:
> hdfs://hadoop-master:9000/globallog/prod/FILES_WRONG_SIZE/date=180614/.FlumeData.1403049638474.tmp
> 2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)]
> Closing
> hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_INCORRECT_MD5_DIGEST/date=180614/FlumeData
> 2014-06-24 05:59:29,176 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
> HDFSWriter is already closed:
> hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_INCORRECT_MD5_DIGEST/date=180614/.FlumeData.1403050060059.tmp
> 2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)]
> Closing
> hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_NULL/date=180614/FlumeData
> 2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
> HDFSWriter is already closed:
> hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_NULL/date=180614/.FlumeData.1403054517880.tmp
> 2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)]
> Closing
> hdfs://hadoop-master:9000/globallog/prod/REST_MONITORING/date=180614/FlumeData
> 2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
> HDFSWriter is already closed:
> hdfs://hadoop-master:9000/globallog/prod/REST_MONITORING/date=180614/.FlumeData.1403049621998.tmp
> 2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)]
> Closing
> hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=180614/FlumeData
> 2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
> HDFSWriter is already closed:
> hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=180614/.FlumeData.1403049621963.tmp
> 2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)]
> Closing
> hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=190614/FlumeData
> 2014-06-24 05:59:29,177 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.BucketWriter.close(BucketWriter.java:297)]
> HDFSWriter is already closed:
> hdfs://hadoop-master:9000/globallog/prod/EMBED_PLAYER/date=190614/.FlumeData.1403136037015.tmp
> 2014-06-24 05:59:29,178 (agent-shutdown-hook) [INFO -
> org.apache.flume.sink.hdfs.HDFSEventSink.stop(HDFSEventSink.java:437)]
> Closing
> hdfs://hadoop-master:9000/globallog/prod/FILE_OBJ_INCORRECT_MD5_DIGEST/date=190614/FlumeData
> ...
> ...
> ...
> {code}
> But as per log data that files was never fail on .sync()
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