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https://issues.apache.org/jira/browse/LUCENE-2283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12837896#action_12837896
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Michael McCandless commented on LUCENE-2283:
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Yeah it would be good to make the pool shared...
It still bugs me that yourkit is claiming DW was using 256 MB when you've got a
64 MB ram buffer.... that's spooky.
> Possible Memory Leak in StoredFieldsWriter
> ------------------------------------------
>
> Key: LUCENE-2283
> URL: https://issues.apache.org/jira/browse/LUCENE-2283
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 2.4.1
> Reporter: Tim Smith
> Assignee: Michael McCandless
> Fix For: 3.1
>
>
> StoredFieldsWriter creates a pool of PerDoc instances
> this pool will grow but never be reclaimed by any mechanism
> furthermore, each PerDoc instance contains a RAMFile.
> this RAMFile will also never be truncated (and will only ever grow) (as far
> as i can tell)
> When feeding documents with large number of stored fields (or one large
> dominating stored field) this can result in memory being consumed in the
> RAMFile but never reclaimed. Eventually, each pooled PerDoc could grow very
> large, even if large documents are rare.
> Seems like there should be some attempt to reclaim memory from the PerDoc[]
> instance pool (or otherwise limit the size of RAMFiles that are cached) etc
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