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https://issues.apache.org/jira/browse/LUCENE-2280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12846984#action_12846984
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Michael McCandless commented on LUCENE-2280:
--------------------------------------------
>From the log I can see that you run fine for a long time, opening IW,
indexing a few docs, optimizing, then closing. Then suddenly the
exceptions start happening on many (but not all) merges, and, merges
involving different segments. JRE bug seems most likely I guess...
Since you see this only on Windows (not eg on Linux), I think this is
likely not a bug in Lucene but rather something particular about your
Windows env -- virus checker maybe? Is there anything in the Windows
events log that correlate to when the exceptions start?
Or it could be a JRE bug -- you really should try on different (Sun)
JRE.
> IndexWriter.optimize() throws NullPointerException
> --------------------------------------------------
>
> Key: LUCENE-2280
> URL: https://issues.apache.org/jira/browse/LUCENE-2280
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Affects Versions: 2.3.2
> Environment: Win 2003, lucene version 2.3.2, IBM JRE 1.6
> Reporter: Ritesh Nigam
> Attachments: lucene.jar, lucene.zip
>
>
> I am using lucene 2.3.2 search APIs for my application, i am indexing 45GB
> database which creates approax 200MB index file, after finishing the indexing
> and while running optimize() i can see NullPointerExcception thrown in my log
> and index file is getting corrupted, log says
> ------------------------------------------------------------------------
> Caused by:
> java.lang.NullPointerException
> at
> org.apache.lucene.store.BufferedIndexOutput.writeBytes(BufferedIndexOutput.java:49)
> at org.apache.lucene.store.IndexOutput.writeBytes(IndexOutput.java:40)
> at
> org.apache.lucene.index.SegmentMerger.mergeNorms(SegmentMerger.java:566)
> at org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:135)
> at
> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3273)
> at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:2968)
> at
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:240)
> ------------------------------------------------------------------------
> and this is happening quite frequently, although I am not able to reproduce
> it on demand, I saw an issue logged which is some what related to mine issue
> (http://mail-archives.apache.org/mod_mbox/lucene-solr-user/200809.mbox/%3c6e4a40db-5efc-42da-a857-d59f4ec34...@mikemccandless.com%3e)
> but the only difference here is I am not using Store.Compress for my fields,
> i am using Store.NO instead. please note that I am using IBM JRE for my
> application.
> Is this an issue with lucene?, if yes it is fixed in which version?
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