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https://issues.apache.org/jira/browse/LUCENE-3116?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael McCandless updated LUCENE-3116:
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Fix Version/s: 4.0
3.2
> pendingCommit in IndexWriter is not thoroughly tested
> -----------------------------------------------------
>
> Key: LUCENE-3116
> URL: https://issues.apache.org/jira/browse/LUCENE-3116
> Project: Lucene - Java
> Issue Type: Test
> Components: core/index
> Affects Versions: 3.2, 4.0
> Reporter: Uwe Schindler
> Fix For: 3.2, 4.0
>
>
> When working on LUCENE-3084, I had a copy-paste error in my patch (see
> revision 1124307 and corrected in 1124316), I replaced pendingCommit by
> segmentInfos in IndexWriter, corrected by the following patch:
> {noformat}
> --- lucene/dev/trunk/lucene/src/java/org/apache/lucene/index/IndexWriter.java
> (original)
> +++ lucene/dev/trunk/lucene/src/java/org/apache/lucene/index/IndexWriter.java
> Wed May 18 16:16:29 2011
> @@ -2552,7 +2552,7 @@ public class IndexWriter implements Clos
> lastCommitChangeCount = pendingCommitChangeCount;
> segmentInfos.updateGeneration(pendingCommit);
> segmentInfos.setUserData(pendingCommit.getUserData());
> - rollbackSegments = segmentInfos.createBackupSegmentInfos(true);
> + rollbackSegments = pendingCommit.createBackupSegmentInfos(true);
> deleter.checkpoint(pendingCommit, true);
> } finally {
> // Matches the incRef done in startCommit:
> {noformat}
> This did not cause any test failure.
> On IRC, Mike said:
> {quote}
> [19:21] mikemccand: ThetaPh1: hmm
> [19:21] mikemccand: well
> [19:22] mikemccand: pendingCommit and sis only differ while commit() is
> running
> [19:22] mikemccand: ie if a thread starts commit
> [19:22] mikemccand: but fsync is taking a long time
> [19:22] mikemccand: and another thread makes a change to sis
> [19:22] ThetaPh1: ok so hard to find that bug
> [19:22] mikemccand: we need our mock dir wrapper to sometimes take a
> long time syncing....
> {quote}
> Maybe we need such a test, I feel bad when such stupid changes don't make any
> test fail.
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