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Posted to common-issues@hadoop.apache.org by "Alan Burlison (JIRA)" <ji...@apache.org> on 2016/01/20 11:43:39 UTC
[jira] [Commented] (HADOOP-12720) Misuse of sun.misc.Unsafe by
org.apache.hadoop.io.FastByteComparisons$LexicographicalComparerHolder$UnsafeComparer.compareTo
causes misaligned memory access coredumps
[ https://issues.apache.org/jira/browse/HADOOP-12720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15108361#comment-15108361 ]
Alan Burlison commented on HADOOP-12720:
----------------------------------------
HADOOP-7761 was ill-advised
> Misuse of sun.misc.Unsafe by org.apache.hadoop.io.FastByteComparisons$LexicographicalComparerHolder$UnsafeComparer.compareTo causes misaligned memory access coredumps
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-12720
> URL: https://issues.apache.org/jira/browse/HADOOP-12720
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: io
> Affects Versions: 2.7.1
> Environment: Solaris SPARC
> Reporter: Alan Burlison
> Labels: Solaris
>
> Core dump details below:
> {noformat}
> # Java VM: Java HotSpot(TM) 64-Bit Server VM (24.85-b07 mixed mode solaris-sparc compressed oops)
> # Problematic frame:
> # J 86 C2 org.apache.hadoop.io.FastByteComparisons$LexicographicalComparerHolder$UnsafeComparer.compareTo([BII[BII)I (273 bytes) @ 0xffffffff6fc9b150 [0xffffffff6fc9b0e0+0x70]
> Stack: [0xffffffff7e200000,0xffffffff7e300000], sp=0xffffffff7e2fce50, free space=1011k
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
> J 86 C2 org.apache.hadoop.io.FastByteComparisons$LexicographicalComparerHolder$UnsafeComparer.compareTo([BII[BII)I (273 bytes) @ 0xffffffff6fc9b150 [0xffffffff6fc9b0e0+0x70]
> j org.apache.hadoop.io.FastByteComparisons$LexicographicalComparerHolder$UnsafeComparer.compareTo(Ljava/lang/Object;IILjava/lang/Object;II)I+16
> j org.apache.hadoop.io.FastByteComparisons.compareTo([BII[BII)I+11
> j org.apache.hadoop.io.WritableComparator.compareBytes([BII[BII)I+8
> j org.apache.hadoop.io.Text$Comparator.compare([BII[BII)I+39
> j org.apache.hadoop.io.TestText.testCompare()V+167
> v ~StubRoutines::call_stub
> {noformat}
> {noformat}
> # Problematic frame:
> # V [libjvm.so+0xc7fa40] Unsafe_GetLong+0x158
> Stack: [0xffffffff7e200000,0xffffffff7e300000], sp=0xffffffff7e2fc9b0, free space=1010k
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
> V [libjvm.so+0xc7fa40] Unsafe_GetLong+0x158
> j sun.misc.Unsafe.getLong(Ljava/lang/Object;J)J+-292148
> j sun.misc.Unsafe.getLong(Ljava/lang/Object;J)J+0
> j org.apache.hadoop.io.FastByteComparisons$LexicographicalComparerHolder$UnsafeComparer.compareTo([BII[BII)I+91
> j org.apache.hadoop.io.FastByteComparisons$LexicographicalComparerHolder$UnsafeComparer.compareTo(Ljava/lang/Object;IILjava/lang/Object;II)I+16
> j org.apache.hadoop.io.FastByteComparisons.compareTo([BII[BII)I+11
> j org.apache.hadoop.io.WritableComparator.compareBytes([BII[BII)I+8
> j org.apache.hadoop.mapred.gridmix.GridmixRecord$Comparator.compare([BII[BII)I+61
> j org.apache.hadoop.mapred.gridmix.TestGridmixRecord.binSortTest(Lorg/apache/hadoop/mapred/gridmix/GridmixRecord;Lorg/apache/hadoop/mapred/gridmix/GridmixRecord;IILorg/apache/hadoop/io/WritableComparator;)V+280
> j org.apache.hadoop.mapred.gridmix.TestGridmixRecord.testBaseRecord()V+57
> v ~StubRoutines::call_stub
> {noformat}
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