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From "Simon Willnauer (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-1717) IndexWriter does not properly account for the RAM consumed by pending deletes
Date Thu, 25 Jun 2009 10:21:07 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-1717?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12724007#action_12724007
] 

Simon Willnauer commented on LUCENE-1717:
-----------------------------------------

Maybe I miss something but IndexWriter#setMaxBufferedDeleteTerms can be used to set an upper
bound for those terms. Once you hit the upper bound BufferedDeletes should be flushed to disc
by calling IndexWriter#flush(). This can happend with either a add or a delete. Maybe I do
not completely understand what you mean by materialized.

> 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
>             Fix For: 2.9
>
>
> 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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