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https://issues.apache.org/jira/browse/LUCENE-1715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12723184#action_12723184
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Simon Willnauer commented on LUCENE-1715:
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bq. Does that really help GC? (I thought not)
It really depends on the VM implementation. In a dalvik VM people start nulling
stuff all the time because it helps GC. In that case where a lot of memory can
be collected I guess its worth to null the references. I generally do not null
references but in this case I would really to it.
so +1 from my side.
> DirectoryIndexReader finalize() holding TermInfosReader longer than necessary
> -----------------------------------------------------------------------------
>
> Key: LUCENE-1715
> URL: https://issues.apache.org/jira/browse/LUCENE-1715
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Affects Versions: 2.4.1
> Environment: Sun JDK 6 update 12 64-bit, Debian Lenny
> Reporter: Brian Groose
> Assignee: Michael McCandless
> Fix For: 2.9
>
>
> DirectoryIndexReader has a finalize method, which causes the JDK to keep a
> reference to the object until it can be finalized. SegmentReader and
> MultiSegmentReader are subclasses that contain references to, potentially,
> hundreds of megabytes of cached data in a TermInfosReader.
> Some options would be removing finalize() from DirectoryIndexReader (it
> releases a write lock at the moment) or possibly nulling out references in
> various close() and doClose() methods throughout the class hierarchy so that
> the finalizable object doesn't references the Term arrays.
> Original mailing list message:
> http://mail-archives.apache.org/mod_mbox/lucene-java-user/200906.mbox/%[email protected]%3e
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