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https://issues.apache.org/jira/browse/FLUME-1417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13428676#comment-13428676
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Hari Shreedharan commented on FLUME-1417:
-----------------------------------------
Brock - I was actually not able to hit it. I just found the issue when I was
writing up a patch for this particular issue (the one I described in the 2nd
comment. We will actually have issues only if we have the commit/rollback for a
transaction which I described above comes after 2 log files were rotated out. I
will submit a patch for this jira and we will look at this problem in a
separate jira.
I filed FLUME-1428 to track this. Feel free to pick it up, if want to take a
look.
> File Channel checkpoint can be bad leading to the channel being unable to
> start.
> --------------------------------------------------------------------------------
>
> Key: FLUME-1417
> URL: https://issues.apache.org/jira/browse/FLUME-1417
> Project: Flume
> Issue Type: Bug
> Reporter: Hari Shreedharan
> Assignee: Hari Shreedharan
>
> ERROR file.Log: Failed to initialize Log on [channel=file-channel]
> java.lang.NullPointerException
> at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:739)
> at org.apache.flume.channel.file.Log.replay(Log.java:261)
> at org.apache.flume.channel.file.FileChannel.start(FileChannel.java:228)
> at
> org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run(LifecycleSupervisor.java:228)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
> at
> java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
> ERROR file.FileChannel: Failed to start the file channel
> [channel=file-channel]
> java.lang.NullPointerException
> at org.apache.flume.channel.file.Log.writeCheckpoint(Log.java:739)
> at org.apache.flume.channel.file.Log.replay(Log.java:261)
> at org.apache.flume.channel.file.FileChannel.start(FileChannel.java:228)
> at
> org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run(LifecycleSupervisor.java:228)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
> at
> java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:619)
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