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https://issues.apache.org/jira/browse/LUCENE-2956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13019234#comment-13019234
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Simon Willnauer commented on LUCENE-2956:
-----------------------------------------
bq. Though it worries me a little how complex the whole delete/update logic is
becoming (not only the part this patch adds).
I can not more agree. Its been very complex making all the tests pass and
figuring out all the little nifty cornercases here. A different, somewhat
simpler approach would be great. Eventually for Searchable Ram Buffers we might
need to switch to seq. ids anyway but I think for landing DWPT on trunk we can
go with the current approach.
I will update the latest patch and commit it to the branch and merge with trunk
again. Once that is done I will setup a hudson build for RT so we give it a
little exercise while we prepare moving to trunk.
> Support updateDocument() with DWPTs
> -----------------------------------
>
> Key: LUCENE-2956
> URL: https://issues.apache.org/jira/browse/LUCENE-2956
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Affects Versions: Realtime Branch
> Reporter: Michael Busch
> Assignee: Simon Willnauer
> Priority: Minor
> Fix For: Realtime Branch
>
> Attachments: LUCENE-2956.patch
>
>
> With separate DocumentsWriterPerThreads (DWPT) it can currently happen that
> the delete part of an updateDocument() is flushed and committed separately
> from the corresponding new document.
> We need to make sure that updateDocument() is always an atomic operation from
> a IW.commit() and IW.getReader() perspective. See LUCENE-2324 for more
> details.
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