[infinispan-issues] [JBoss JIRA] (ISPN-2981) Infinispan as Lucene directory provider has "No sub-file with id .fnm found" errors in distributed mode

[Anuj Shah (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-2981?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13061369#comment-13061369 ] 

Anuj Shah commented on ISPN-2981:
---------------------------------

The description here related to distributed caches, however we've seen the same problem occur with the same stack trace with replicated caches on a single node cluster.

We've worked around the problem be preventing concurrent merges and addressing the following comment in [LUCENE-5541|https://issues.apache.org/jira/browse/LUCENE-5541?focusedCommentId=14133804&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14133804]
bq. A Merge is writing concurrently to a thread using an IndexWriter for doing new writes

> Infinispan as Lucene directory provider has "No sub-file with id .fnm found" errors in distributed mode
> -------------------------------------------------------------------------------------------------------
>
>                 Key: ISPN-2981
>                 URL: https://issues.jboss.org/browse/ISPN-2981
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Lucene Directory
>    Affects Versions: 5.2.4.Final
>         Environment: Hibernate Search 4.1.1, Hibernate Core 4.1.4, Lucene 3.5.0, Spring Framework 3.1.1
>            Reporter: Christopher Wong
>            Assignee: Gustavo Fernandes
>             Fix For: 7.0.0.Beta2, 7.0.0.Final
>
>         Attachments: infinispan.cfg.xml, luceneindexerrors.txt
>
>
> I have been trying to use Infinispan as a Lucene directory provider under Hibernate Search. A single node writes to the index via JMS. A configuration that uses Infinispan in distributed mode seems to work under development, but under load results in an exception that looks like the following. 
> Caused by: java.io.IOException: No sub-file with id .fnm found (fileName=_3.cfs files: [.fdt, .fdx])
>         at org.apache.lucene.index.CompoundFileReader.openInput(CompoundFileReader.java:156)
>         at org.apache.lucene.index.CompoundFileReader.openInput(CompoundFileReader.java:145)
>         at org.apache.lucene.index.FieldInfos.<init>(FieldInfos.java:74)
>         at org.apache.lucene.index.SegmentCoreReaders.<init>(SegmentCoreReaders.java:73)
>         at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:115)
>         at org.apache.lucene.index.SegmentReader.get(SegmentReader.java:93)
>         at org.apache.lucene.index.DirectoryReader.<init>(DirectoryReader.java:235)
>         at org.apache.lucene.index.ReadOnlyDirectoryReader.<init>(ReadOnlyDirectoryReader.java:34)
>         at org.apache.lucene.index.DirectoryReader.doOpenIfChanged(DirectoryReader.java:506)
>         at org.apache.lucene.index.DirectoryReader.access$000(DirectoryReader.java:45)
>         at org.apache.lucene.index.DirectoryReader$2.doBody(DirectoryReader.java:498)
>         at org.apache.lucene.index.SegmentInfos$FindSegmentsFile.run(SegmentInfos.java:754)
>         at org.apache.lucene.index.DirectoryReader.doOpenNoWriter(DirectoryReader.java:493)
>         at org.apache.lucene.index.DirectoryReader.doOpenIfChanged(DirectoryReader.java:450)
>         at org.apache.lucene.index.DirectoryReader.doOpenIfChanged(DirectoryReader.java:391)
>         at org.apache.lucene.index.IndexReader.openIfChanged(IndexReader.java:497)
>         at org.apache.lucene.index.IndexReader.reopen(IndexReader.java:681)
>         at org.hibernate.search.indexes.impl.SharingBufferReaderProvider$PerDirectoryLatestReader.refreshAndGet(SharingBufferReaderProvider.java:227)
>         ... 117 more



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