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From "Earwin Burrfoot (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1715) DirectoryIndexReader finalize() holding TermInfosReader longer than necessary
Date Tue, 23 Jun 2009 18:02:07 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12723224#action_12723224
] 

Earwin Burrfoot commented on LUCENE-1715:
-----------------------------------------

I object nulling references in attempt to speed up GC. It's totally useless on any decent
JVM implementation and if someone uses indecent JVM, I doubt he's concerned with his app efficiency.

> 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/%3C7A5CB4A7BBCE0C40B81C5145C326C31301A62971@NUMEVP06.na.imtn.com%3E

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