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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2361) OutOfMemoryException while Indexing
Date Tue, 06 Apr 2010 09:07:33 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2361?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12853811#action_12853811
] 

Michael McCandless commented on LUCENE-2361:
--------------------------------------------

Hmm are you sure you're setting infoStream on all writers you create?  The above output just
shows an IW that was opened, not used for anything (no deletions, additions), and then closed.

And eg the OOME in the opening here during a merge should result in some details being posted
to the infoStream.

> OutOfMemoryException while Indexing
> -----------------------------------
>
>                 Key: LUCENE-2361
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2361
>             Project: Lucene - Java
>          Issue Type: Bug
>          Components: Index
>    Affects Versions: 2.9.1
>         Environment: Windows
>            Reporter: Shivender Devarakonda
>
> Hi,
> We use lucene 2.9.1 version.
> We see the following OutOfMemory error in our environment, I think This is happening
at a significant high load. Have you observed this anytime? Please let me know your thoughts
on this.
> org.apache.lucene.index.MergePolicy$MergeException: java.lang.OutOfMemoryError: PermGen
space
> 	at org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:351)
> 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:315)
> Caused by: java.lang.OutOfMemoryError: PermGen space
> 	at java.lang.String.$$YJP$$intern(Native Method)
> 	at java.lang.String.intern(Unknown Source)
> 	at org.apache.lucene.util.SimpleStringInterner.intern(SimpleStringInterner.java:74)
> 	at org.apache.lucene.util.StringHelper.intern(StringHelper.java:36)
> 	at org.apache.lucene.index.FieldInfos.read(FieldInfos.java:356)
> 	at org.apache.lucene.index.FieldInfos.<init>(FieldInfos.java:71)
> 	at org.apache.lucene.index.SegmentReader$CoreReaders.<init>(SegmentReader.java:116)
> 	at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:638)
> 	at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:608)
> 	at org.apache.lucene.index.IndexWriter$ReaderPool.get(IndexWriter.java:686)
> 	at org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4979)
> 	at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:4614)
> 	at org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:235)
> 	at org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:291)

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