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https://issues.apache.org/jira/browse/OAK-5135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15683894#comment-15683894
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Francesco Mari commented on OAK-5135:
-------------------------------------
The timeout doesn't mean data loss. In the particular context of the flush
background operation, a timeout is tolerable. The Segment Store will be anyway
flushed synchronously before closing the underlying resources, to avoid losing
commits that happened between the latest asynchronous flush and the close
operation.
> The flush of written data via TarRevisions is asynchronous in relation to
> FileStore.close()
> -------------------------------------------------------------------------------------------
>
> Key: OAK-5135
> URL: https://issues.apache.org/jira/browse/OAK-5135
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: segment-tar
> Affects Versions: 1.5.13
> Reporter: Arek Kita
> Assignee: Francesco Mari
> Priority: Critical
> Fix For: 1.6, 1.5.15
>
>
> *Expected behavior*: {{FileStore.close()}} should wait for any written data
> to be flushed to disk
> *Actual behavior*: {{FileStore.close()}} does not wait for flushing data
> {code:title=Migration log}
> 21.11.2016 12:00:59.792 WARN o.a.j.o.s.f.Scheduler: The scheduler FileStore
> background tasks takes too long to shutdown
> 21.11.2016 12:01:10.363 INFO o.a.j.o.s.f.FileStore: TarMK closed:
> /data/cq/crx-quickstart/repository-segment-tar-20161121-120039/segmentstore
> 21.11.2016 12:01:10.625 INFO o.a.j.o.p.s.f.FileStore: TarMK closed:
> /data/cq/crx-quickstart/repository/segmentstore
> ...
> ### The above directories are swapped/moved here etc ###
> ...
> 21.11.2016 12:01:10.646 WARN o.a.j.o.s.f.FileStore: Failed to flush the
> TarMK at
> /data/cq/crx-quickstart/repository-segment-tar-20161121-120039/segmentstore
> java.io.IOException: Stream Closed
> at java.io.RandomAccessFile.writeBytes(Native Method) ~[na:1.8.0_101]
> at java.io.RandomAccessFile.writeBytes(RandomAccessFile.java:1100)
> ~[na:1.8.0_101]
> at
> org.apache.jackrabbit.oak.segment.file.TarRevisions.flush(TarRevisions.java:209)
>
> at
> org.apache.jackrabbit.oak.segment.file.FileStore.flush(FileStore.java:358)
> at
> org.apache.jackrabbit.oak.segment.file.FileStore$2.run(FileStore.java:221)
> at
> org.apache.jackrabbit.oak.segment.file.SafeRunnable.run(SafeRunnable.java:67)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> [na:1.8.0_101]
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> [na:1.8.0_101]
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> [na:1.8.0_101]
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> [na:1.8.0_101]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [na:1.8.0_101]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0_101]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101]
> {code}
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