[ 
https://issues.apache.org/jira/browse/LUCENE-7142?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Michael McCandless updated LUCENE-7142:
---------------------------------------
    Fix Version/s: 6.1
                   master

> Test2BPoints and Test2BBKDPoints.test2D() failure: wrong number of points in 
> split
> ----------------------------------------------------------------------------------
>
>                 Key: LUCENE-7142
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7142
>             Project: Lucene - Core
>          Issue Type: Bug
>            Reporter: Steve Rowe
>             Fix For: master, 6.1
>
>
> My Jenkins found failures in {{Test2BBKDPoints}} and {{Test2BPoints}} in the 
> same run on branch_6x; I've reported here before seeing them reproduce 
> because the tests took 12 and 20 hours to run, respectively.
> {noformat}
> Checking out Revision 39aaa108ac8a85809080e4f7cf2b5ac0cc0d0fe9 
> (refs/remotes/origin/branch_6x)
> [...]
>    [junit4] HEARTBEAT J0 PID(8991@localhost): 2016-03-26T01:02:55, stalled 
> for 45731s at: Test2BBKDPoints.test2D
> [...]
>    [junit4] Suite: org.apache.lucene.util.bkd.Test2BBKDPoints
>    [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=Test2BBKDPoints 
> -Dtests.method=test2D -Dtests.seed=E58B6D2DB5BEBF58 -Dtests.nightly=true 
> -Dtests.slow=true -Dtests.locale=el-GR -Dtests.timezone=Europe/Warsaw 
> -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
>    [junit4] ERROR   45777s J0 | Test2BBKDPoints.test2D <<<
>    [junit4]    > Throwable #1: java.lang.IllegalStateException: wrong number 
> of points in split: expected=1073743112 but actual=1
>    [junit4]    >      at 
> __randomizedtesting.SeedInfo.seed([E58B6D2DB5BEBF58:C82EDF7D5339FEBB]:0)
>    [junit4]    >      at 
> org.apache.lucene.util.bkd.BKDWriter.build(BKDWriter.java:1224)
>    [junit4]    >      at 
> org.apache.lucene.util.bkd.BKDWriter.finish(BKDWriter.java:862)
>    [junit4]    >      at 
> org.apache.lucene.util.bkd.Test2BBKDPoints.test2D(Test2BBKDPoints.java:96)
>    [junit4]    >      at java.lang.Thread.run(Thread.java:745)
>    [junit4]    >      Suppressed: 
> org.apache.lucene.index.CorruptIndexException: checksum passed (62a1e57e). 
> possibly transient resource issue, or a Lucene or JVM bug 
> (resource=BufferedChecksumIndexInput(MMapIndexInput(path="/slow/jenkins/HDD-workspaces/Lucene-core-nightly-monster-6.x/lucene/build/core/test/J0/temp/lucene.util.bkd.Test2BBKDPoints_E58B6D2DB5BEBF58-001/2BBKDPoints2D-001/_0_bkd1_sort_71i.tmp")))
>    [junit4]    >              at 
> org.apache.lucene.codecs.CodecUtil.checkFooter(CodecUtil.java:409)
>    [junit4]    >              at 
> org.apache.lucene.util.bkd.BKDWriter.verifyChecksum(BKDWriter.java:988)
>    [junit4]    >              at 
> org.apache.lucene.util.bkd.BKDWriter.build(BKDWriter.java:1230)
>    [junit4]    >              ... 38 more
>    [junit4]   2> NOTE: leaving temporary files on disk at: 
> /slow/jenkins/HDD-workspaces/Lucene-core-nightly-monster-6.x/lucene/build/core/test/J0/temp/lucene.util.bkd.Test2BBKDPoints_E58B6D2DB5BEBF58-001
>    [junit4]   2> NOTE: test params are: codec=CheapBastard, 
> sim=ClassicSimilarity, locale=el-GR, timezone=Europe/Warsaw
>    [junit4]   2> NOTE: Linux 4.1.0-custom2-amd64 amd64/Oracle Corporation 
> 1.8.0_45 (64-bit)/cpus=16,threads=1,free=1512802208,total=4148166656
>    [junit4]   2> NOTE: All tests run in this JVM: [TestCustomSearcherSort, 
> TestTimSorterWorstCase, TestPayloadsOnVectors, TestShardSearching, 
> TestNumericDocValuesUpdates, TestCharsRef, TestCompiledAutomaton, 
> TestFieldValueQuery, TestMutableValues, TestPerFieldPostingsFormat2, 
> TestAtomicUpdate, TestDocumentsWriterDeleteQueue, 
> TestParallelReaderEmptyIndex, Test2BNumericDocValues, TestQueryBuilder, 
> TestNumericTokenStream, TestAllFilesHaveChecksumFooter, 
> TestExitableDirectoryReader, TestDeterminism, TestTrackingDirectoryWrapper, 
> TestConjunctionDISI, TestFilterLeafReader, TestWeakIdentityMap, 
> TestBlendedTermQuery, TestIndexWriterOnVMError, TestSimpleFSDirectory, 
> TestFixedBitDocIdSet, TestNewestSegment, TestIndexWriterForceMerge, 
> TestTotalHitCountCollector, Test4GBStoredFields, TestBytesRef, 
> TestSortedSetSortField, TestSentinelIntSet, TestToken, TestLogMergePolicy, 
> TestIntsRef, TestIndexWriterDelete, TestOperations, TestNeedsScores, 
> TestSpanFirstQuery, TestPackedInts, TestMultiTermConstantScore, 
> TestReqExclBulkScorer, TestBinaryTerms, TestFastCompressionMode, 
> TestDirectoryReaderReopen, TestRollingUpdates, TestPagedBytes, TestTryDelete, 
> TestSegmentMerger, TestMinShouldMatch2, TestPositiveScoresOnlyCollector, 
> TestByteArrayDataInput, Test2BPagedBytes, TestReusableStringReader, 
> TestBytesRefAttImpl, TestPackedTokenAttributeImpl, 
> TestGrowableByteArrayDataOutput, TestBlockPostingsFormat, 
> TestBlockPostingsFormat2, TestForUtil, TestLucene50SegmentInfoFormat, 
> TestLucene50StoredFieldsFormat, 
> TestLucene50StoredFieldsFormatHighCompression, TestLucene50TermVectorsFormat, 
> TestLucene53NormsFormat, TestLucene54DocValuesFormat, 
> Test2BSortedDocValuesFixedSorted, TestAllFilesCheckIndexHeader, 
> TestAllFilesDetectTruncation, TestDocInverterPerFieldErrorInfo, 
> TestDocValues, TestDuelingCodecsAtNight, TestFilterDirectoryReader, 
> TestIndexWriterDeleteByQuery, TestIndexWriterExceptions2, 
> TestMergePolicyWrapper, TestMergeRateLimiter, TestMixedDocValuesUpdates, 
> TestMultiTermsEnum, TestNRTReaderCleanup, TestPointValues, TestReadOnlyIndex, 
> TestReaderWrapperDVTypeCheck, TestSegmentInfos, TestSwappedIndexFiles, 
> TestTermVectors, TestApproximationSearchEquivalence, TestBooleanCoord, 
> TestBooleanRewrites, TestEarlyTermination, TestIndexSearcher, 
> TestMultiPhraseEnum, TestQueryRescorer, TestSortedSetSelector, 
> TestClassicSimilarity, TestFilterSpans, TestSpanCollection, 
> TestSpanContainQuery, TestSpanOrQuery, TestSpanTermQuery, TestSpansEnum, 
> TestBufferedChecksum, TestFilterDirectory, TestMmapDirectory, 
> TestNIOFSDirectory, TestNativeFSLockFactory, TestRateLimiter, 
> TestSleepingLockWrapper, TestCharsRefBuilder, 
> TestFrequencyTrackingRingBuffer, TestInPlaceMergeSorter, 
> TestIntArrayDocIdSet, TestIntroSorter, TestLongBitSet, TestMergedIterator, 
> TestNotDocIdSet, TestSparseFixedBitDocIdSet, TestTimSorter, TestRegExp, 
> Test2BBKDPoints]
> [...]
>    [junit4] HEARTBEAT J2 PID(8984@localhost): 2016-03-26T06:12:22, stalled 
> for 72912s at: Test2BPoints.test2D
>    [junit4] Suite: org.apache.lucene.index.Test2BPoints
>    [junit4]   1> TEST: now CheckIndex
>    [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=Test2BPoints 
> -Dtests.method=test2D -Dtests.seed=E58B6D2DB5BEBF58 -Dtests.nightly=true 
> -Dtests.slow=true -Dtests.locale=ms-MY -Dtests.timezone=Europe/Rome 
> -Dtests.asserts=true -Dtests.file.encoding=US-ASCII
>    [junit4] ERROR   72944s J2 | Test2BPoints.test2D <<<
>    [junit4]    > Throwable #1: java.lang.IllegalStateException: this writer 
> hit an unrecoverable error; cannot complete forceMerge
>    [junit4]    >      at 
> __randomizedtesting.SeedInfo.seed([E58B6D2DB5BEBF58:C82EDF7D5339FEBB]:0)
>    [junit4]    >      at 
> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1786)
>    [junit4]    >      at 
> org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1736)
>    [junit4]    >      at 
> org.apache.lucene.index.Test2BPoints.test2D(Test2BPoints.java:133)
>    [junit4]    >      at java.lang.Thread.run(Thread.java:745)
>    [junit4]    > Caused by: java.lang.IllegalStateException: wrong number of 
> points in split: expected=1073741825 but actual=0
>    [junit4]    >      at 
> org.apache.lucene.util.bkd.BKDWriter.build(BKDWriter.java:1224)
>    [junit4]    >      at 
> org.apache.lucene.util.bkd.BKDWriter.finish(BKDWriter.java:862)
>    [junit4]    >      at 
> org.apache.lucene.codecs.lucene60.Lucene60PointsWriter.writeField(Lucene60PointsWriter.java:115)
>    [junit4]    >      at 
> org.apache.lucene.codecs.PointsWriter.mergeOneField(PointsWriter.java:58)
>    [junit4]    >      at 
> org.apache.lucene.codecs.lucene60.Lucene60PointsWriter.merge(Lucene60PointsWriter.java:204)
>    [junit4]    >      at 
> org.apache.lucene.index.SegmentMerger.mergePoints(SegmentMerger.java:168)
>    [junit4]    >      at 
> org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:117)
>    [junit4]    >      at 
> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4099)
>    [junit4]    >      at 
> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3679)
>    [junit4]    >      at 
> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:588)
>    [junit4]    >      at 
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:626)
>    [junit4]    >      Suppressed: 
> org.apache.lucene.index.CorruptIndexException: checksum passed (90c634e2). 
> possibly transient resource issue, or a Lucene or JVM bug 
> (resource=BufferedChecksumIndexInput(MMapIndexInput(path="/slow/jenkins/HDD-workspaces/Lucene-core-nightly-monster-6.x/lucene/build/core/test/J2/temp/lucene.index.Test2BPoints_E58B6D2DB5BEBF58-001/2BPoints2D-001/_50_bkd0_sort_1iy7.tmp")))
>    [junit4]    >              at 
> org.apache.lucene.codecs.CodecUtil.checkFooter(CodecUtil.java:409)
>    [junit4]    >              at 
> org.apache.lucene.util.bkd.BKDWriter.verifyChecksum(BKDWriter.java:988)
>    [junit4]    >              at 
> org.apache.lucene.util.bkd.BKDWriter.build(BKDWriter.java:1230)
>    [junit4]    >              ... 10 more
>    [junit4]   2> NOTE: leaving temporary files on disk at: 
> /slow/jenkins/HDD-workspaces/Lucene-core-nightly-monster-6.x/lucene/build/core/test/J2/temp/lucene.index.Test2BPoints_E58B6D2DB5BEBF58-001
>    [junit4]   2> Mac 26, 2016 6:12:53 AM 
> com.carrotsearch.randomizedtesting.RandomizedRunner$QueueUncaughtExceptionsHandler
>  uncaughtException
>    [junit4]   2> WARNING: Uncaught exception in thread: Thread[Lucene Merge 
> Thread #17,5,TGRP-Test2BPoints]
>    [junit4]   2> org.apache.lucene.index.MergePolicy$MergeException: 
> java.lang.IllegalStateException: wrong number of points in split: 
> expected=1073741825 but actual=0
>    [junit4]   2>      at 
> __randomizedtesting.SeedInfo.seed([E58B6D2DB5BEBF58]:0)
>    [junit4]   2>      at 
> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:668)
>    [junit4]   2>      at 
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:648)
>    [junit4]   2> Caused by: java.lang.IllegalStateException: wrong number of 
> points in split: expected=1073741825 but actual=0
>    [junit4]   2>      at 
> org.apache.lucene.util.bkd.BKDWriter.build(BKDWriter.java:1224)
>    [junit4]   2>      at 
> org.apache.lucene.util.bkd.BKDWriter.finish(BKDWriter.java:862)
>    [junit4]   2>      at 
> org.apache.lucene.codecs.lucene60.Lucene60PointsWriter.writeField(Lucene60PointsWriter.java:115)
>    [junit4]   2>      at 
> org.apache.lucene.codecs.PointsWriter.mergeOneField(PointsWriter.java:58)
>    [junit4]   2>      at 
> org.apache.lucene.codecs.lucene60.Lucene60PointsWriter.merge(Lucene60PointsWriter.java:204)
>    [junit4]   2>      at 
> org.apache.lucene.index.SegmentMerger.mergePoints(SegmentMerger.java:168)
>    [junit4]   2>      at 
> org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:117)
>    [junit4]   2>      at 
> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4099)
>    [junit4]   2>      at 
> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3679)
>    [junit4]   2>      at 
> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:588)
>    [junit4]   2>      at 
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:626)
>    [junit4]   2>      Suppressed: 
> org.apache.lucene.index.CorruptIndexException: checksum passed (90c634e2). 
> possibly transient resource issue, or a Lucene or JVM bug 
> (resource=BufferedChecksumIndexInput(MMapIndexInput(path="/slow/jenkins/HDD-workspaces/Lucene-core-nightly-monster-6.x/lucene/build/core/test/J2/temp/lucene.index.Test2BPoints_E58B6D2DB5BEBF58-001/2BPoints2D-001/_50_bkd0_sort_1iy7.tmp")))
>    [junit4]   2>              at 
> org.apache.lucene.codecs.CodecUtil.checkFooter(CodecUtil.java:409)
>    [junit4]   2>              at 
> org.apache.lucene.util.bkd.BKDWriter.verifyChecksum(BKDWriter.java:988)
>    [junit4]   2>              at 
> org.apache.lucene.util.bkd.BKDWriter.build(BKDWriter.java:1230)
>    [junit4]   2>              ... 10 more
>    [junit4]   2> 
>    [junit4]   2> Mar 26, 2016 6:12:53 AM 
> com.carrotsearch.randomizedtesting.ThreadLeakControl checkThreadLeaks
>    [junit4]   2> WARNING: Will linger awaiting termination of 1 leaked 
> thread(s).
>    [junit4]   2> NOTE: test params are: codec=CheapBastard, 
> sim=ClassicSimilarity, locale=ms-MY, timezone=Europe/Rome
>    [junit4]   2> NOTE: Linux 4.1.0-custom2-amd64 amd64/Oracle Corporation 
> 1.8.0_45 (64-bit)/cpus=16,threads=1,free=110605288,total=675807232
>    [junit4]   2> NOTE: All tests run in this JVM: [TestSortedSetDocValues, 
> TestDocValuesScoring, TestHugeRamFile, TestStringHelper, 
> TestCodecHoldsOpenFiles, TestNGramPhraseQuery, 
> TestUsageTrackingFilterCachingPolicy, TestSpanNotQuery, TestFieldType, 
> TestLRUQueryCache, TestFixedBitSet, TestNumericUtils, TestMultiPhraseQuery, 
> TestFuzzyQuery, TestCachingTokenFilter, TestMultiLevelSkipList, 
> TestNumericRangeQuery32, TestIndexWriterNRTIsCurrent, TestForceMergeForever, 
> TestCachingCollector, TestNumericRangeQuery64, TestDocumentWriter, 
> TestSegmentTermEnum, TestPositionIncrement, LimitedFiniteStringsIteratorTest, 
> TestSpanBoostQuery, TestIndexWriterThreadsToSegments, 
> TestIndexWriterFromReader, TestRecyclingIntBlockAllocator, 
> TestSingleInstanceLockFactory, TestPrefixCodedTerms, TestMaxPosition, 
> TestDocValuesRewriteMethod, TestRollingBuffer, TestAssertions, 
> FuzzyTermOnShortTermsTest, TestTerms, TestMergeSchedulerExternal, 
> TestSPIClassIterator, TestIOUtils, TestQueryCachingPolicy, TestCrash, 
> TestIndexWriterReader, TestBooleanMinShouldMatch, TestDuelingCodecs, 
> TestSortedNumericSortField, TestCodecUtil, TestLucene50FieldInfoFormat, 
> TestUTF32ToUTF8, TestTermdocPerf, TestIndexWriterOnDiskFull, 
> TestDirectPacked, TestIndexWriter, TestBytesStore, 
> TestIndexWriterWithThreads, TestIndexWriterExceptions, TestSearcherManager, 
> TestDeletionPolicy, TestBasics, TestFlushByRamOrCountsPolicy, 
> TestSloppyPhraseQuery, TestNRTThreads, TestBoolean2, TestStressAdvance, 
> TestNorms, TestSearchWithThreads, TestConcurrentMergeScheduler, 
> TestDocumentsWriterStallControl, TestNeverDelete, TestTopDocsMerge, 
> TestLongPostings, TestMinimize, TestNRTReaderWithThreads, 
> TestTieredMergePolicy, TestPerFieldPostingsFormat, TestLevenshteinAutomata, 
> TestBufferedIndexInput, TestTermsEnum, TestSimpleExplanations, 
> TestLockFactory, TestPhraseQuery, TestCollectionUtil, TestBagOfPositions, 
> TestOmitNorms, TestComplexExplanations, TestRegexpRandom2, 
> TestNRTCachingDirectory, TestSegmentReader, TestFastDecompressionMode, 
> TestParallelCompositeReader, TestTransactions, TestMultiThreadTermVectors, 
> TestSegmentTermDocs, TestSort, TestMultiDocValues, TestFieldsReader, 
> TestDocValuesIndexing, TestTermsEnum2, TestLegacyNumericUtils, 
> TestPostingsOffsets, TestMixedCodecs, TestFlex, TestStressIndexing2, 
> TestRAMDirectory, TestTermVectorsWriter, TestCodecs, 
> TestCharTermAttributeImpl, TestParallelLeafReader, TestBytesRefHash, 
> TestThreadedForceMerge, TestStressNRT, TestSloppyPhraseQuery2, 
> TestDisjunctionMaxQuery, TestOmitTf, TestSameScoresWithThreads, 
> TestTermRangeQuery, TestCrashCausesCorruptIndex, TestLiveFieldValues, 
> TestForTooMuchCloning, TestPayloads, TestDoc, TestWildcard, TestSimilarity2, 
> TestFieldMaskingSpanQuery, TestExternalCodecs, TestNoDeletionPolicy, 
> TestSimpleExplanationsOfNonMatches, TestTermVectorsReader, 
> TestPerSegmentDeletes, TestMultiValuedNumericRangeQuery, TestIntBlockPool, 
> TestTopDocsCollector, TestUniqueTermCount, TestBooleanQuery, TestUnicodeUtil, 
> TestAllFilesHaveCodecHeader, TestAutomatonQuery, TestDocument, 
> TestTopFieldCollector, TestFileSwitchDirectory, TestSumDocFreq, 
> TestIndexableField, TestWildcardRandom, TestPrefixRandom, TestDirectory, 
> TestRegexpRandom, TestCheckIndex, TestSpanMultiTermQueryWrapper, 
> TestBooleanQueryVisitSubscorers, TestSizeBoundedForceMerge, 
> TestIndexFileDeleter, TestConstantScoreQuery, TestMatchAllDocsQuery, 
> TestParallelTermEnum, TestElevationComparator, TestSubScorerFreqs, 
> TestConjunctions, TestSimilarity, TestVirtualMethod, TestSimilarityProvider, 
> TestSetOnce, TestSearch, TestFilterIterator, Test2BPostings, 
> TestSameTokenSamePosition, TestDocCount, TestBinaryDocument, 
> TestAutomatonQueryUnicode, TestAttributeSource, TestBooleanScorer, 
> TestRamUsageEstimator, TestNoMergePolicy, TestNoMergeScheduler, 
> TestNamedSPILoader, TestIndexWriterLockRelease, TestPhrasePrefixQuery, 
> TestRollback, TestTwoPhaseCommitTool, TestCloseableThreadLocal, 
> MultiCollectorTest, TestDocBoost, Test2BPositions, TestIndexCommit, TestTerm, 
> Test2BPostingsBytes, Test2BPoints]
>    [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=Test2BPoints 
> -Dtests.seed=E58B6D2DB5BEBF58 -Dtests.nightly=true -Dtests.slow=true 
> -Dtests.locale=ms-MY -Dtests.timezone=Europe/Rome -Dtests.asserts=true 
> -Dtests.file.encoding=US-ASCII
>    [junit4] ERROR   0.00s J2 | Test2BPoints (suite) <<<
>    [junit4]    > Throwable #1: 
> com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an 
> uncaught exception in thread: Thread[id=4892, name=Lucene Merge Thread #17, 
> state=RUNNABLE, group=TGRP-Test2BPoints]
>    [junit4]    > Caused by: 
> org.apache.lucene.index.MergePolicy$MergeException: 
> java.lang.IllegalStateException: wrong number of points in split: 
> expected=1073741825 but actual=0
>    [junit4]    >      at 
> __randomizedtesting.SeedInfo.seed([E58B6D2DB5BEBF58]:0)
>    [junit4]    >      at 
> org.apache.lucene.index.ConcurrentMergeScheduler.handleMergeException(ConcurrentMergeScheduler.java:668)
>    [junit4]    >      at 
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:648)
>    [junit4]    > Caused by: java.lang.IllegalStateException: wrong number of 
> points in split: expected=1073741825 but actual=0
>    [junit4]    >      at 
> org.apache.lucene.util.bkd.BKDWriter.build(BKDWriter.java:1224)
>    [junit4]    >      at 
> org.apache.lucene.util.bkd.BKDWriter.finish(BKDWriter.java:862)
>    [junit4]    >      at 
> org.apache.lucene.codecs.lucene60.Lucene60PointsWriter.writeField(Lucene60PointsWriter.java:115)
>    [junit4]    >      at 
> org.apache.lucene.codecs.PointsWriter.mergeOneField(PointsWriter.java:58)
>    [junit4]    >      at 
> org.apache.lucene.codecs.lucene60.Lucene60PointsWriter.merge(Lucene60PointsWriter.java:204)
>    [junit4]    >      at 
> org.apache.lucene.index.SegmentMerger.mergePoints(SegmentMerger.java:168)
>    [junit4]    >      at 
> org.apache.lucene.index.SegmentMerger.merge(SegmentMerger.java:117)
>    [junit4]    >      at 
> org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:4099)
>    [junit4]    >      at 
> org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3679)
>    [junit4]    >      at 
> org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:588)
>    [junit4]    >      at 
> org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:626)
>    [junit4]    >      Suppressed: 
> org.apache.lucene.index.CorruptIndexException: checksum passed (90c634e2). 
> possibly transient resource issue, or a Lucene or JVM bug 
> (resource=BufferedChecksumIndexInput(MMapIndexInput(path="/slow/jenkins/HDD-workspaces/Lucene-core-nightly-monster-6.x/lucene/build/core/test/J2/temp/lucene.index.Test2BPoints_E58B6D2DB5BEBF58-001/2BPoints2D-001/_50_bkd0_sort_1iy7.tmp")))
>    [junit4]    >              at 
> org.apache.lucene.codecs.CodecUtil.checkFooter(CodecUtil.java:409)
>    [junit4]    >              at 
> org.apache.lucene.util.bkd.BKDWriter.verifyChecksum(BKDWriter.java:988)
>    [junit4]    >              at 
> org.apache.lucene.util.bkd.BKDWriter.build(BKDWriter.java:1230)
>    [junit4]    >              ... 10 more
>    [junit4] Completed [415/415 (3!)] on J2 in 82560.59s, 2 tests, 2 errors 
> <<< FAILURES!
> {noformat}
> FWIW, here's how the suite was run (via Jenkins):
> {noformat}
> ant -f lucene/core/build.xml clean test -Dtests.jvms=4 -Dtests.nightly=true 
> -Dtests.monster=true -Dtests.heapsize=30g
> {noformat}



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