[jira] Commented: (HADOOP-6923) Native Libraries do not load if a different platform signature is returned from org.apache.hadoop.util.PlatformName

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-6923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928482#action_12928482 ] 

Hadoop QA commented on HADOOP-6923:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12452966/HADOOP-6923.patch
  against trunk revision 1031422.

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    -1 patch.  The patch command could not apply the patch.

Console output: https://hudson.apache.org/hudson/job/PreCommit-HADOOP-Build/22//console

This message is automatically generated.

> Native Libraries do not load if a different platform signature is returned from org.apache.hadoop.util.PlatformName
> -------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-6923
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6923
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: native
>    Affects Versions: 0.20.0, 0.20.1, 0.20.2
>         Environment: SLES 10, IBM Java 6, Apache Hadoop 0.20.x
>            Reporter: Stephen Watt
>             Fix For: 0.20.3
>
>         Attachments: HADOOP-6923.patch
>
>
> The bin/hadoop script has an environment variable called JAVA_PLATFORM which is set to to the results returned by org.apache.hadoop.util.PlatformName . These results are sometimes unique to the JRE being used. Although the value returned for 64 Bit Sun/Oracle Java and 64 Bit IBM Java is the same, it is different for the corresponding 32 Bit JREs.
> The issue is that the value returned is used in creating the path to the native libraries on disk, i.e ${HADOOP_COMMON_HOME}/lib/native/${JAVA_PLATFORM}
> Since the path on disk is fixed with the Sun JRE value /lib/native/Linux-i386-32 it therefore fails when it attempts to load the native libraries with the value returned with 32 Bit IBM Java, /lib/native/Linux-x86-32

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