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Posted to dev@lucene.apache.org by "Michael McCandless (JIRA)" <ji...@apache.org> on 2010/11/20 15:20:13 UTC
[jira] Resolved: (LUCENE-2762) Don't leak deleted open file handles
with pooled readers
[ https://issues.apache.org/jira/browse/LUCENE-2762?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael McCandless resolved LUCENE-2762.
----------------------------------------
Resolution: Fixed
Fix Version/s: 4.0
3.1
3.0.3
2.9.4
Fixed.
I'll open a new issue to make cfs selection dependent on segment size...
> Don't leak deleted open file handles with pooled readers
> --------------------------------------------------------
>
> Key: LUCENE-2762
> URL: https://issues.apache.org/jira/browse/LUCENE-2762
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 2.9.4, 3.0.3, 3.1, 4.0
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 2.9.4, 3.0.3, 3.1, 4.0
>
> Attachments: LUCENE-2762.patch
>
>
> If you have CFS enabled today, and pooling is enabled (either directly
> or because you've pulled an NRT reader), IndexWriter will hold open
> SegmentReaders against the non-CFS format of each merged segment.
> So even if you close all NRT readers you've pulled from the writer,
> you'll still see file handles open against files that have been
> deleted.
> This count will not grow unbounded, since it's limited by the number
> of segments in the index, but it's still a serious problem since the
> app had turned off CFS in the first place presumably to avoid risk of
> too-many-open-files. It's also bad because it ties up disk space
> since these files would otherwise be deleted.
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