[infinispan-issues] [JBoss JIRA] (ISPN-2831) NPE in DistributedSegmentReadLocker

[Christopher Wong (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-2831?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12761013#comment-12761013 ] 

Christopher Wong commented on ISPN-2831:
----------------------------------------

I've seen this happen with Hibernate Search and Infinispan 5.2.4.Final:

Caused by: java.lang.NullPointerException
	at org.infinispan.lucene.readlocks.DistributedSegmentReadLocker.realFileDelete(DistributedSegmentReadLocker.java:184)
	at org.infinispan.lucene.readlocks.DistributedSegmentReadLocker.deleteOrReleaseReadLock(DistributedSegmentReadLocker.java:109)
	at org.infinispan.lucene.InfinispanDirectory.deleteFile(InfinispanDirectory.java:213)
	at org.apache.lucene.index.IndexFileDeleter.deleteFile(IndexFileDeleter.java:578)
	at org.apache.lucene.index.IndexFileDeleter.<init>(IndexFileDeleter.java:256)
	at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:1178)
	at org.hibernate.search.store.impl.DirectoryProviderHelper.initializeIndexIfNeeded(DirectoryProviderHelper.java:159)
	at org.hibernate.search.infinispan.impl.InfinispanDirectoryProvider.start(InfinispanDirectoryProvider.java:89)
	at org.hibernate.search.indexes.impl.DirectoryBasedIndexManager.initialize(DirectoryBasedIndexManager.java:93)
	at org.hibernate.search.indexes.impl.IndexManagerHolder.createDirectoryManager(IndexManagerHolder.java:241)
	... 60 more
                
> NPE in DistributedSegmentReadLocker
> -----------------------------------
>
>                 Key: ISPN-2831
>                 URL: https://issues.jboss.org/browse/ISPN-2831
>             Project: Infinispan
>          Issue Type: Feature Request
>    Affects Versions: 5.2.1.Final
>            Reporter: Michal Zaborec
>            Assignee: Sanne Grinovero
>             Fix For: 5.3.0.Final
>
>
> possible NPE in DistributedSegmentReadLocker
> {code}
> java.lang.NullPointerException
> 	at org.infinispan.lucene.readlocks.DistributedSegmentReadLocker.realFileDelete(DistributedSegmentReadLocker.java:184)
> 	at org.infinispan.lucene.readlocks.DistributedSegmentReadLocker.deleteOrReleaseReadLock(DistributedSegmentReadLocker.java:109)
> 	at org.infinispan.lucene.InfinispanDirectory.deleteFile(InfinispanDirectory.java:213)
> 	at org.apache.lucene.index.IndexFileDeleter.deleteFile(IndexFileDeleter.java:578)
> {code}
> this is caused by this code:
> {code}
> final int bufferSize = file.getBufferSize();
> if (file != null) //during optimization of index a same file could be deleted twice, so you could see a null here
> ......
> {code}

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