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https://issues.apache.org/jira/browse/LUCENE-2618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12924006#action_12924006
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Michael McCandless commented on LUCENE-2618:
--------------------------------------------
bq. If my app knowingly opened a too old index, would it get this exception
always, if it will call optimize followed by close? Or is it a special scenario
hit by the test?
Not always. It's only if the MP registered more than 1 merge for the optimize,
and, you're using SMS.
But, really if your app has risk of opening a too-old index, it should be
prepared for this exc...
bq. namely, what's the connection between optimize + close and an old index?
MP enrolled 2 merges for the optimize... the first one hits exc... then test
calls close... and close lets MS run... and MS is SMS... and it runs the 2nd
merge, which this the exc.
> Intermittent failure in 3.x's backwards TestThreadedOptimize
> ------------------------------------------------------------
>
> Key: LUCENE-2618
> URL: https://issues.apache.org/jira/browse/LUCENE-2618
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Reporter: Michael McCandless
> Fix For: 3.1, 4.0
>
> Attachments: LUCENE-2618.patch, LUCENE-2618.patch
>
>
> Failure looks like this:
> {noformat}
> [junit] Testsuite: org.apache.lucene.index.TestThreadedOptimize
> [junit] Testcase:
> testThreadedOptimize(org.apache.lucene.index.TestThreadedOptimize): FAILED
> [junit] null
> [junit] junit.framework.AssertionFailedError: null
> [junit] at
> org.apache.lucene.index.TestThreadedOptimize.runTest(TestThreadedOptimize.java:125)
> [junit] at
> org.apache.lucene.index.TestThreadedOptimize.testThreadedOptimize(TestThreadedOptimize.java:149)
> [junit] at
> org.apache.lucene.util.LuceneTestCase.runBare(LuceneTestCase.java:253)
> {noformat}
> I just committed some verbosity so next time it strikes we'll have more
> details.
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