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  1. Lucene - Core
  2. LUCENE-6098

Indexwriter changecount assertion fail with g1gc

    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None
    • Lucene Fields:
      New

      Description

      This failed on 1.8.0u25 G1GC and I was able to reproduce at least once, but not without G1.

      svn co -r 1643097 https://svn.eu.apache.org/repos/asf/lucene/dev/trunk
      cd trunk/lucene/core
      ant beast  -Dtestcase=TestStressDeletes -Dtests.method=test -Dtests.seed=C8F513C39231BFA2 -Dtests.slow=true -Dtests.locale=sk -Dtests.timezone=Singapore -Dtests.asserts=true -Dtests.file.encoding=ISO-8859-1 -Dbeast.iters=1000 -Dargs="-XX:+UseG1GC" -Dtests.dups=8
      

      I am not sure this is possible to debug, but the exception is scary:

         [junit4] Suite: org.apache.lucene.index.TestStressDeletes
         [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=TestStressDeletes -Dtests.method=test -Dtests.seed=C8F513C39231BFA2 -Dtests.slow=true -Dtests.locale=sk -Dtests.timezone=Singapore -Dtests.asserts=true -Dtests.file.encoding=ISO-8859-1
         [junit4] ERROR   0.62s J5 | TestStressDeletes.test <<<
         [junit4]    > Throwable #1: com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an uncaught exception in thread: Thread[id=68, name=Thread-30, state=RUNNABLE, group=TGRP-TestStressDeletes]
         [junit4]    > 	at __randomizedtesting.SeedInfo.seed([C8F513C39231BFA2:40A12C193CCDD25A]:0)
         [junit4]    > Caused by: java.lang.AssertionError: lastCommitChangeCount=130 changeCount=128
         [junit4]    > 	at __randomizedtesting.SeedInfo.seed([C8F513C39231BFA2]:0)
         [junit4]    > 	at org.apache.lucene.index.IndexWriter.startCommit(IndexWriter.java:4256)
         [junit4]    > 	at org.apache.lucene.index.IndexWriter.prepareCommitInternal(IndexWriter.java:2778)
         [junit4]    > 	at org.apache.lucene.index.IndexWriter.commitInternal(IndexWriter.java:2881)
         [junit4]    > 	at org.apache.lucene.index.IndexWriter.commit(IndexWriter.java:2848)
         [junit4]    > 	at org.apache.lucene.index.TestStressDeletes$1.run(TestStressDeletes.java:75)
         [junit4]   2> NOTE: test params are: codec=Asserting(Lucene50): {id=PostingsFormat(name=Direct)}, docValues:{}, sim=RandomSimilarityProvider(queryNorm=false,coord=no): {id=DFR I(ne)B1}, locale=sk, timezone=Singapore
         [junit4]   2> NOTE: Linux 3.13.0-35-generic amd64/Oracle Corporation 1.8.0_25 (64-bit)/cpus=8,threads=1,free=428019792,total=499646464
         [junit4]   2> NOTE: All tests run in this JVM: [TestOmitNorms, Test2BPositions, Nested2, Nested3, Nested1, Test2BPagedBytes, TestTermsEnum2, TestDoc, TestTwoPhaseCommitTool, TestTimSorter, TestDocTermOrdsRangeFilter, TestWorstCaseTestBehavior, TestBasics, TestToken, TestStressDeletes]
         [junit4] Completed on J5 in 0.70s, 1 test, 1 error <<< FAILURES!
      
      
      

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            • Assignee:
              Unassigned
              Reporter:
              rcmuir Robert Muir
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              Dates

              • Created:
                Updated: