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https://issues.apache.org/jira/browse/OAK-3504?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chetan Mehrotra resolved OAK-3504.
----------------------------------
Resolution: Fixed
Fixed
* trunk - 1708105
* 1.0 - 1708108
* 1.2 - 1708110
> CopyOnRead directory should not schedule a copy task for non existent file
> --------------------------------------------------------------------------
>
> Key: OAK-3504
> URL: https://issues.apache.org/jira/browse/OAK-3504
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: lucene
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Priority: Minor
> Fix For: 1.3.9, 1.0.23, 1.2.8
>
>
> CopyOnWriteDirectory currently schedules a copy task for file which does
> exist. This eventually results in FileNotFoundException and that gets logged
> as warning. In normal usage this should not happen at the first place i.e.
> look up of non existent file. However in case of corruption it is seen that
> Lucene tries to lookup segment files with increasing generation number and
> they flood the log with such exception.
> In such a case no scheduling of file copy should be done and instead lookup
> call should be directly delegated to remote directory
> {noformat}
> 28.09.2015 12:11:08.745 *WARN* [oak-lucene-0]
> org.apache.jackrabbit.oak.plugins.index.lucene.IndexCopier Error occurred
> while copying file [segments_25y] from OakDirectory@5970597
> lockFactory=org.apache.lucene.store.NoLockFactory@51b451b4 to
> NIOFSDirectory@/usr/cq/repository/index/e5a943cdec3000bd8ce54924fd2070ab5d1d35b9ecf530963a3583d43bf28293/2
>
> lockFactory=NativeFSLockFactory@/usr/cq/repository/_cqa/repository/index/e5a943cdec3000bd8ce54924fd2070ab5d1d35b9ecf530963a3583d43bf28293/2
> java.io.FileNotFoundException: segments_25y
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory.openInput(OakDirectory.java:133)
> at org.apache.lucene.store.Directory.copy(Directory.java:185)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.IndexCopier$CopyOnReadDirectory$1.run(IndexCopier.java:312)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
> at java.lang.Thread.run(Thread.java:767)
> {noformat}
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