dengkai created FLUME-2951:
------------------------------
Summary: Exec Source generate massive logfile in File Channel data
dirs
Key: FLUME-2951
URL: https://issues.apache.org/jira/browse/FLUME-2951
Project: Flume
Issue Type: Bug
Components: Sinks+Sources
Affects Versions: v1.6.0
Reporter: dengkai
When the file channel is full, exec source always get a filechannel
exception.Every time the main thread start to roll, and then the
timedFlushService flush the events again.So a exception follows :
07 Jul 2016 17:09:38,789 ERROR [timedFlushExecService63-0]
(org.apache.flume.source.ExecSource$ExecRunnable$1.run:328) - Exception
occured when processing event batch
org.apache.flume.ChannelException: Commit failed due to IO error
[channel=channel-4]
at
org.apache.flume.channel.file.FileChannel$FileBackedTransaction.doRollback(FileChannel.java:621)
at
org.apache.flume.channel.BasicTransactionSemantics.rollback(BasicTransactionSemantics.java:168)
at
org.apache.flume.channel.ChannelProcessor.processEventBatch(ChannelProcessor.java:194)
at
org.apache.flume.source.ExecSource$ExecRunnable.flushEventBatch(ExecSource.java:382)
at
org.apache.flume.source.ExecSource$ExecRunnable.access$100(ExecSource.java:255)
at
org.apache.flume.source.ExecSource$ExecRunnable$1.run(ExecSource.java:324)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.nio.channels.ClosedByInterruptException
at
java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:202)
at sun.nio.ch.FileChannelImpl.force(FileChannelImpl.java:380)
at
org.apache.flume.channel.file.LogFileV3.writeDelimitedTo(LogFileV3.java:148)
at
org.apache.flume.channel.file.LogFileV3$Writer.<init>(LogFileV3.java:209)
at
org.apache.flume.channel.file.LogFileFactory.getWriter(LogFileFactory.java:77)
at org.apache.flume.channel.file.Log.roll(Log.java:964)
at org.apache.flume.channel.file.Log.roll(Log.java:933)
at org.apache.flume.channel.file.Log.rollback(Log.java:740)
at
org.apache.flume.channel.file.FileChannel$FileBackedTransaction.doRollback(FileChannel.java:619)
... 12 more
When this exceptions happens, file channel start another roll, and the ID of
the log file keep increasing.
If the exec source is configured as restart = true and file channel is still
full, this problem always be there and will generate massive log-ID size of
1.0MB and log-ID.meta size of 47bytes in the channel's data dir(in my try, I
even got thousands of files and got too many files error when exec source
started tail -F command).
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