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https://issues.apache.org/jira/browse/LUCENE-1717?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless resolved LUCENE-1717.
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Resolution: Fixed
> IndexWriter does not properly account for the RAM consumed by pending deletes
> -----------------------------------------------------------------------------
>
> Key: LUCENE-1717
> URL: https://issues.apache.org/jira/browse/LUCENE-1717
> Project: Lucene - Java
> Issue Type: Bug
> Affects Versions: 2.4, 2.4.1
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 2.9
>
> Attachments: BufferedDeletes_beautification.patch, LUCENE-1717.patch
>
>
> IndexWriter, with autoCommit false, is able to carry buffered deletes for
> quite some time before materializing them to docIDs (thus freeing up RAM
> used).
> It's only on triggering a merge (or, commit/close) that the deletes are
> materialized and the RAM is freed.
> I expect this in practice is a smallish amount of RAM, but we should still
> fix it.
> I don't have a patch yet so if someone wants to grab this, feel free!!
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