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https://issues.apache.org/jira/browse/LUCENE-1573?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless updated LUCENE-1573:
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Attachment: LUCENE-1573.patch
Attached patch. All tests pass, including a new one that showed the deadlock.
I also found & fixed a case where IndexWriter would hang during close (thinking
a BG merge was still running when it wasn't) if the InterruptedException
arrived at the right time.
I'll commit in a day or two.
> IndexWriter does not do the right thing when a Thread is interrupt()'d
> ----------------------------------------------------------------------
>
> Key: LUCENE-1573
> URL: https://issues.apache.org/jira/browse/LUCENE-1573
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Affects Versions: 1.9, 2.0.0, 2.1, 2.2, 2.3, 2.3.1, 2.3.2, 2.4, 2.4.1
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 2.9
>
> Attachments: LUCENE-1573.patch
>
>
> Spinoff from here:
>
> http://www.nabble.com/Deadlock-with-concurrent-merges-and-IndexWriter--Lucene-2.4--to22714290.html
> When a Thread is interrupt()'d while inside Lucene, there is a risk currently
> that it will cause a spinloop and starve BG merges from completing.
> Instead, when possible, we should allow interruption. But unfortunately for
> back-compat, we will need to wrap the exception in an unchecked version. In
> 3.0 we can change that to simply throw InterruptedException.
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