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From "Alan Burlison (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HADOOP-12720) Misuse of sun.misc.Unsafe by org.apache.hadoop.io.FastByteComparisons$LexicographicalComparerHolder$UnsafeComparer.compareTo causes misaligned memory access coredumps
Date Mon, 18 Jan 2016 13:46:39 GMT
Alan Burlison created HADOOP-12720:
--------------------------------------

             Summary: 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: Solaeis SPARC
            Reporter: Alan Burlison


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}



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