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https://issues.apache.org/jira/browse/LUCENE-3348?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Simon Willnauer resolved LUCENE-3348.
-------------------------------------
Resolution: Fixed
Fix Version/s: (was: 3.4)
Lucene Fields: [New, Patch Available] (was: [New])
> IndexWriter applies wrong deletes during concurrent flush-all
> -------------------------------------------------------------
>
> Key: LUCENE-3348
> URL: https://issues.apache.org/jira/browse/LUCENE-3348
> Project: Lucene - Java
> Issue Type: Bug
> Components: core/index
> Reporter: Michael McCandless
> Assignee: Simon Willnauer
> Fix For: 4.0
>
> Attachments: LUCENE-3348.patch, LUCENE-3348.patch, LUCENE-3348.patch,
> LUCENE-3348.patch, LUCENE-3348.patch, LUCENE-3348.patch, fail.txt.bz2,
> fail2.txt.bz2
>
>
> Yonik uncovered this with the TestRealTimeGet test: if a flush-all is
> underway, it is possible for an incoming update to pick a DWPT that is
> stale, ie, not yet pulled/marked for flushing, yet the DW has cutover
> to a new deletes queue. If this happens, and the deleted term was
> also updated in one of the non-stale DWPTs, then the wrong document is
> deleted and the test fails by detecting the wrong value.
> There's a 2nd failure mode that I haven't figured out yet, whereby 2
> docs are returned when searching by id (there should only ever be 1
> doc since the test uses updateDocument which is atomic wrt
> commit/reopen).
> Yonik verified the test passes pre-DWPT, so my guess is (but I
> have yet to verify) this test also passes on 3.x. I'll backport
> the test to 3.x to be sure.
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