Missing sync in IndexWriter.addIndexes(IndexReader[])
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Key: LUCENE-2767
URL: https://issues.apache.org/jira/browse/LUCENE-2767
Project: Lucene - Java
Issue Type: Bug
Reporter: Michael McCandless
The 3.x build just hit this:
{noformat}
[junit] Testsuite: org.apache.lucene.index.TestAddIndexes
[junit] Testcase:
testAddIndexesWithThreads(org.apache.lucene.index.TestAddIndexes): FAILED
[junit] expected:<3160> but was:<2701>
[junit] junit.framework.AssertionFailedError: expected:<3160> but was:<2701>
[junit] at
org.apache.lucene.util.LuceneTestCase$LuceneTestCaseRunner.runChild(LuceneTestCase.java:779)
[junit] at
org.apache.lucene.util.LuceneTestCase$LuceneTestCaseRunner.runChild(LuceneTestCase.java:745)
[junit] at
org.apache.lucene.index.TestAddIndexes.testAddIndexesWithThreads(TestAddIndexes.java:708)
[junit]
[junit]
[junit] Tests run: 15, Failures: 1, Errors: 0, Time elapsed: 9.28 sec
[junit]
[junit] ------------- Standard Output ---------------
[junit] java.lang.AssertionError: RefCount is 0 pre-decrement for file
"_8a.tvf"
[junit] at
org.apache.lucene.index.IndexFileDeleter$RefCount.DecRef(IndexFileDeleter.java:608)
[junit] at
org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:505)
[junit] at
org.apache.lucene.index.IndexFileDeleter.decRef(IndexFileDeleter.java:496)
[junit] at
org.apache.lucene.index.IndexWriter.addIndexes(IndexWriter.java:2972)
[junit] at
org.apache.lucene.index.TestAddIndexes$CommitAndAddIndexes.doBody(TestAddIndexes.java:681)
[junit] at
org.apache.lucene.index.TestAddIndexes$RunAddIndexesThreads$1.run(TestAddIndexes.java:624)
[junit] NOTE: reproduce with: ant test -Dtestcase=TestAddIndexes
-Dtestmethod=testAddIndexesWithThreads
-Dtests.seed=-6912763261803132408:-5575674032550262483 -Dtests.multiplier=3
[junit] NOTE: test params are: locale=en_AU, timezone=America/Atka
{noformat}
It looks like it's caused by a long-standing missing sync (since at least
2.9.x). I think likely we hit it just now thanks to adding random
Thread.yield()'s in MockDirWrapper!
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