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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-2247) ClosedChannelException throws on Linux
Date Mon, 22 Nov 2010 16:58:13 GMT

    [ https://issues.apache.org/jira/browse/SOLR-2247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12934508#action_12934508
] 

Simon Willnauer commented on SOLR-2247:
---------------------------------------

As uwe pointed out correctly on IRC that problem might be somewhat "solvable" if you use MMapDirectory
since it only with run into this exception when you open the files initially. Once that is
done its mapped and you should be fine. Yet, it somewhat requires 64 JVMs.

just a hint...

> ClosedChannelException throws on Linux
> --------------------------------------
>
>                 Key: SOLR-2247
>                 URL: https://issues.apache.org/jira/browse/SOLR-2247
>             Project: Solr
>          Issue Type: Bug
>          Components: search
>         Environment: JDK1.6/Tomcat6
>            Reporter: tom liu
>
> i use distributed query, but found ClosedChannelException. 
> {noformat}
> Caused by: java.nio.channels.ClosedChannelException
>         at sun.nio.ch.FileChannelImpl.ensureOpen(FileChannelImpl.java:88)
>         at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:613)
>         at org.apache.lucene.store.NIOFSDirectory$NIOFSIndexInput.readInternal(NIOFSDirectory.java:161)
>         at org.apache.lucene.store.BufferedIndexInput.readBytes(BufferedIndexInput.java:139)
>         at org.apache.lucene.index.CompoundFileReader$CSIndexInput.readInternal(CompoundFileReader.java:285)
>         at org.apache.lucene.store.BufferedIndexInput.refill(BufferedIndexInput.java:160)
>         at org.apache.lucene.store.BufferedIndexInput.readByte(BufferedIndexInput.java:39)
>         at org.apache.lucene.store.DataInput.readVInt(DataInput.java:86)
>         at org.apache.lucene.index.codecs.DeltaBytesReader.read(DeltaBytesReader.java:40)
>         at org.apache.lucene.index.codecs.PrefixCodedTermsReader$FieldReader$SegmentTermsEnum.next(PrefixCodedTermsReader.java:469)
>         at org.apache.lucene.index.codecs.PrefixCodedTermsReader$FieldReader$SegmentTermsEnum.seek(PrefixCodedTermsReader.java:385)
>         at org.apache.lucene.index.TermsEnum.seek(TermsEnum.java:68)
>         at org.apache.lucene.index.Terms.docFreq(Terms.java:53)
>         at org.apache.lucene.index.SegmentReader.docFreq(SegmentReader.java:898)
>         at org.apache.lucene.index.IndexReader.docFreq(IndexReader.java:882)
>         at org.apache.lucene.index.DirectoryReader.docFreq(DirectoryReader.java:687)
>         at org.apache.solr.search.SolrIndexReader.docFreq(SolrIndexReader.java:305)
>         at org.apache.lucene.search.IndexSearcher.docFreq(IndexSearcher.java:136)
>         at org.apache.lucene.search.Similarity.idfExplain(Similarity.java:804)
>         at org.apache.lucene.search.PhraseQuery$PhraseWeight.<init>(PhraseQuery.java:150)
>         at org.apache.lucene.search.PhraseQuery.createWeight(PhraseQuery.java:321)
>         at org.apache.lucene.search.Query.weight(Query.java:101)
>         at org.apache.lucene.search.Searcher.createWeight(Searcher.java:147)
>         at org.apache.lucene.search.Searcher.search(Searcher.java:88)
>         at org.apache.solr.search.SolrIndexSearcher.getDocListNC(SolrIndexSearcher.java:1388)
>         at org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1284)
>         at org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:343)
>         at org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:
>         ...
> {noformat}
> with lucene-2239, i found NIOFs would throw ClosedChannelException.
> see https://issues.apache.org/jira/browse/LUCENE-2239 

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