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Posted to common-dev@hadoop.apache.org by "Alan Burlison (JIRA)" <ji...@apache.org> on 2015/12/09 15:46:10 UTC
[jira] [Created] (HADOOP-12630) Mususe of sun.misc.Unsafe causes
midaligned memory access coredumps
Alan Burlison created HADOOP-12630:
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Summary: Mususe of sun.misc.Unsafe causes midaligned memory access coredumps
Key: HADOOP-12630
URL: https://issues.apache.org/jira/browse/HADOOP-12630
Project: Hadoop Common
Issue Type: Sub-task
Components: native
Affects Versions: 3.0.0
Environment: Solaris SPARC
Reporter: Alan Burlison
Assignee: Alan Burlison
Misuse of sun.misc.unsafe by {{org.apache.hadoop.io.FastByteComparisons}} causes misaligned memory accesses and results in coredumps. Stack traces below:
{code}
hadoop-tools/hadoop-gridmix/core
--- called from signal handler with signal 10 (SIGBUS) ---
ffffffff7717fa40 Unsafe_GetLong (18c000, ffffffff7e2fd6d8, 0, 19, ffffffff775d4be0, 10018c000) + 158
ffffffff70810dcc * sun/misc/Unsafe.getLong(Ljava/lang/Object;J)J+-30004
ffffffff70810d70 * sun/misc/Unsafe.getLong(Ljava/lang/Object;J)J+0
ffffffff70806d58 * org/apache/hadoop/io/FastByteComparisons$LexicographicalComparerHolder$UnsafeComparer.compareTo([BII[BII)I+91 (line 405)
ffffffff70806cb4 * org/apache/hadoop/io/FastByteComparisons$LexicographicalComparerHolder$UnsafeComparer.compareTo(Ljava/lang/Object;IILjava/lang/Object;II)I+16 (line 264)
ffffffff7080783c * org/apache/hadoop/io/FastByteComparisons.compareTo([BII[BII)I+11 (line 92)
ffffffff70806cb4 * org/apache/hadoop/io/WritableComparator.compareBytes([BII[BII)I+8 (line 376)
ffffffff70806cb4 * org/apache/hadoop/mapred/gridmix/GridmixRecord$Comparator.compare([BII[BII)I+61 (line 522)
ffffffff70806cb4 * 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 (line 268)
ffffffff70806f44 * org/apache/hadoop/mapred/gridmix/TestGridmixRecord.testBaseRecord()V+57 (line 482)
{code}
This also causes {{hadoop-mapreduce-project/hadoop-mapreduce-examples/core}}
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