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https://issues.apache.org/jira/browse/OAK-6777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16191251#comment-16191251
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Chetan Mehrotra commented on OAK-6777:
--------------------------------------
The issue is mostly seen (with long running scenarios) post OAK-6535
Added ignored test in 1811071. The issue is seen when NRTIndex instances get
changed due to change in master index i.e. due to change detected by
IndexTracker. The new test adds another thread which does this tracker updation
> IndexReader closed exception in previous reader
> -----------------------------------------------
>
> Key: OAK-6777
> URL: https://issues.apache.org/jira/browse/OAK-6777
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: lucene
> Affects Versions: 1.6.5
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Labels: candidate_oak_1_6
> Fix For: 1.8
>
>
> Another variant of index reader closed exception as reported in OAK-6635 is
> seen for previous readers
> {noformat}
> 2017-10-03 21:21:41,810 ERROR NA [oak-lucene-16]
> o.a.j.o.p.i.l.h.DocumentQueue - Uncaught exception
> org.apache.lucene.store.AlreadyClosedException: this IndexReader is closed
> at org.apache.lucene.index.IndexReader.ensureOpen(IndexReader.java:262)
> at
> org.apache.lucene.index.StandardDirectoryReader.doOpenIfChanged(StandardDirectoryReader.java:271)
> at
> org.apache.lucene.index.DirectoryReader.openIfChanged(DirectoryReader.java:250)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.hybrid.NRTIndex.createReader(NRTIndex.java:257)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.hybrid.NRTIndex.getPrimaryReader(NRTIndex.java:113)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.hybrid.NRTIndex.getReaders(NRTIndex.java:148)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.IndexNodeManager.getNRTReaders(IndexNodeManager.java:243)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.IndexNodeManager.refreshReaders(IndexNodeManager.java:203)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.IndexNodeManager.access$100(IndexNodeManager.java:53)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.IndexNodeManager$1.run(IndexNodeManager.java:104)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.hybrid.TimedRefreshPolicy.refreshIfRequired(TimedRefreshPolicy.java:59)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.hybrid.TimedRefreshPolicy.refreshOnReadIfRequired(TimedRefreshPolicy.java:40)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.IndexNodeManager.acquire(IndexNodeManager.java:152)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.IndexTracker.acquireIndexNode(IndexTracker.java:193)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.hybrid.DocumentQueue.processDocs(DocumentQueue.java:235)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.hybrid.DocumentQueue.addDocsToIndex(DocumentQueue.java:214)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.hybrid.DocumentQueue.access$500(DocumentQueue.java:55)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.hybrid.DocumentQueue$2$1.call(DocumentQueue.java:121)
> at
> org.apache.jackrabbit.oak.plugins.index.lucene.hybrid.DocumentQueue$2$1.call(DocumentQueue.java:96)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {noformat}
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