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Posted to common-issues@hadoop.apache.org by "Vinod Kumar Vavilapalli (JIRA)" <ji...@apache.org> on 2016/08/18 01:17:21 UTC
[jira] [Updated] (HADOOP-12630) Misuse of sun.misc.Unsafe by
org.apache.hadoop.io.FastByteComparisons causes misaligned memory access
coredumps
[ https://issues.apache.org/jira/browse/HADOOP-12630?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vinod Kumar Vavilapalli updated HADOOP-12630:
---------------------------------------------
Target Version/s: 2.8.0, 2.6.5, 2.7.4 (was: 2.8.0, 2.7.3, 2.6.5)
> Misuse of sun.misc.Unsafe by org.apache.hadoop.io.FastByteComparisons causes misaligned 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: 2.6.0, 2.7.0, 3.0.0-alpha1
> 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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