Build: https://builds.apache.org/job/Lucene-trunk/1857/

1 tests failed.
REGRESSION:  org.apache.lucene.index.TestMixedCodecs.test

Error Message:
background merge hit exception: _94(4.0):cv397 _93(4.0):cv8316 into _95 
[maxNumSegments=1]

Stack Trace:
java.io.IOException: background merge hit exception: _94(4.0):cv397 
_93(4.0):cv8316 into _95 [maxNumSegments=1]
        at org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1732)
        at org.apache.lucene.index.IndexWriter.forceMerge(IndexWriter.java:1669)
        at 
org.apache.lucene.index.RandomIndexWriter.doRandomForceMerge(RandomIndexWriter.java:357)
        at 
org.apache.lucene.index.RandomIndexWriter.close(RandomIndexWriter.java:406)
        at org.apache.lucene.index.TestMixedCodecs.test(TestMixedCodecs.java:57)
        at 
org.apache.lucene.util.LuceneTestCase$SubclassSetupTeardownRule$1.evaluate(LuceneTestCase.java:729)
        at 
org.apache.lucene.util.LuceneTestCase$InternalSetupTeardownRule$1.evaluate(LuceneTestCase.java:645)
        at 
org.apache.lucene.util.SystemPropertiesInvariantRule$1.evaluate(SystemPropertiesInvariantRule.java:22)
        at 
org.apache.lucene.util.LuceneTestCase$TestResultInterceptorRule$1.evaluate(LuceneTestCase.java:556)
        at 
org.apache.lucene.util.UncaughtExceptionsRule$1.evaluate(UncaughtExceptionsRule.java:51)
        at 
org.apache.lucene.util.LuceneTestCase$RememberThreadRule$1.evaluate(LuceneTestCase.java:618)
        at 
org.apache.lucene.util.LuceneTestCaseRunner.runChild(LuceneTestCaseRunner.java:164)
        at 
org.apache.lucene.util.LuceneTestCaseRunner.runChild(LuceneTestCaseRunner.java:57)
        at 
org.apache.lucene.util.UncaughtExceptionsRule$1.evaluate(UncaughtExceptionsRule.java:51)
        at 
org.apache.lucene.util.StoreClassNameRule$1.evaluate(StoreClassNameRule.java:21)
        at 
org.apache.lucene.util.SystemPropertiesInvariantRule$1.evaluate(SystemPropertiesInvariantRule.java:22)
Caused by: java.lang.OutOfMemoryError: Java heap space
        at org.apache.lucene.store.RAMFile.newBuffer(RAMFile.java:73)
        at org.apache.lucene.store.RAMFile.addBuffer(RAMFile.java:46)
        at 
org.apache.lucene.store.RAMOutputStream.switchCurrentBuffer(RAMOutputStream.java:152)
        at 
org.apache.lucene.store.RAMOutputStream.writeBytes(RAMOutputStream.java:138)
        at 
org.apache.lucene.store.MockIndexOutputWrapper.writeBytes(MockIndexOutputWrapper.java:119)
        at 
org.apache.lucene.util.ThrottledIndexOutput.writeBytes(ThrottledIndexOutput.java:108)
        at 
org.apache.lucene.util.ThrottledIndexOutput.writeByte(ThrottledIndexOutput.java:102)
        at org.apache.lucene.store.DataOutput.writeInt(DataOutput.java:58)
        at 
org.apache.lucene.store.CompoundFileWriter.writeEntryTable(CompoundFileWriter.java:233)
        at 
org.apache.lucene.store.CompoundFileWriter.close(CompoundFileWriter.java:177)
        at 
org.apache.lucene.store.CompoundFileDirectory.close(CompoundFileDirectory.java:206)
        at 
org.apache.lucene.index.IndexWriter.createCompoundFile(IndexWriter.java:4083)
        at 
org.apache.lucene.index.IndexWriter.mergeMiddle(IndexWriter.java:3650)
        at org.apache.lucene.index.IndexWriter.merge(IndexWriter.java:3257)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler.doMerge(ConcurrentMergeScheduler.java:382)
        at 
org.apache.lucene.index.ConcurrentMergeScheduler$MergeThread.run(ConcurrentMergeScheduler.java:451)




Build Log (for compile errors):
[...truncated 13476 lines...]


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