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From "Ayappan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11505) hadoop-mapreduce-client-nativetask fails to use x86 optimizations in some cases
Date Mon, 27 Apr 2015 10:15:39 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11505?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14513857#comment-14513857
] 

Ayappan commented on HADOOP-11505:
----------------------------------

There is a JVM crash due to libnativetask.so in PowerPC64LE that may be related to this jira.

# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00003fff721d8e50, pid=10952, tid=70366359056848
#
# JRE version: OpenJDK Runtime Environment (7.0_79-b14) (build 1.7.0_79-mockbuild_2015_04_10_10_48-b00)
# Java VM: OpenJDK 64-Bit Server VM (24.79-b02 mixed mode linux-ppc64 compressed oops)
# Derivative: IcedTea 2.5.5
# Distribution: Built on Red Hat Enterprise Linux Server release 7.1 (Maipo) (Fri Apr 10 10:48:01
EDT 2015)
# Problematic frame:
# C  [libnativetask.so.1.0.0+0x58e50]  NativeTask::WritableUtils::ReadVLongInner(char const*,
unsigned int&)+0x40
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit
-c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /tmp/jvm-10952/hs_error.log
#
# If you would like to submit a bug report, please include
# instructions on how to reproduce the bug and visit:
#   http://icedtea.classpath.org/bugzilla
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.


> hadoop-mapreduce-client-nativetask fails to use x86 optimizations in some cases
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-11505
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11505
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 3.0.0
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: HADOOP-11505.001.patch
>
>
> hadoop-mapreduce-client-nativetask fails to use x86 optimizations in some cases.  Also,
on some alternate, non-x86, non-ARM architectures the generated code is incorrect.  Thanks
to Steve Loughran and Edward Nevill for finding this.



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