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https://issues.apache.org/jira/browse/OAK-6972?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16711979#comment-16711979
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Vikas Saurabh commented on OAK-6972:
------------------------------------
Backported on 1.6 at [r1848357|https://svn.apache.org/r1848357].
> DefaultIndexReader closes suggest directory multiple times
> ----------------------------------------------------------
>
> Key: OAK-6972
> URL: https://issues.apache.org/jira/browse/OAK-6972
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: lucene
> Affects Versions: 1.7.11
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Priority: Minor
> Fix For: 1.7.12, 1.8.0, 1.6.16
>
>
> With OAK-6895 DefaultIndexReader now closes CopyOnReadDirectory used for
> suggestor multiple times. This leads to exception later
> {noformat}
> 21.11.2017 13:53:52.750 *WARN* [oak-lucene-2162]
> org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndexProviderService
> Error occurred in asynchronous processing
> org.apache.lucene.store.AlreadyClosedException: this Directory is closed
> at
> org.apache.lucene.store.BaseDirectory.ensureOpen(BaseDirectory.java:66)
> at
> org.apache.lucene.store.FSDirectory.getDirectory(FSDirectory.java:338)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.directory.LocalIndexFile.getFSDir(LocalIndexFile.java:125)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.directory.LocalIndexFile.<init>(LocalIndexFile.java:43)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.IndexCopier.deleteFile(IndexCopier.java:276)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.directory.CopyOnReadDirectory.removeDeletedFiles(CopyOnReadDirectory.java:315)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.directory.CopyOnReadDirectory.access$300(CopyOnReadDirectory.java:51)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.directory.CopyOnReadDirectory$2.run(CopyOnReadDirectory.java:278)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {noformat}
> As a fix
> # Avoid closing the directory multiple times in DefaultIndexReader
> # Make CopyOnReadDirectory resilient to multiple close calls
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