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From "Stephen Watt (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-6923) Native Libraries do not load if a different platform signature is returned from org.apache.hadoop.util.PlatformName
Date Tue, 07 Sep 2010 19:22:35 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-6923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Stephen Watt updated HADOOP-6923:
---------------------------------

    Status: Patch Available  (was: Open)

> 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: 0.20.2, 0.20.1, 0.20.0
>         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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