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Posted to common-issues@hadoop.apache.org by "Harsh J (Updated) (JIRA)" <ji...@apache.org> on 2011/12/28 22:59:30 UTC
[jira] [Updated] (HADOOP-6895) Native Libraries do not load if a
different platform signature is returned from
org.apache.hadoop.util.PlatformName
[ https://issues.apache.org/jira/browse/HADOOP-6895?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Harsh J updated HADOOP-6895:
----------------------------
Affects Version/s: 0.20.205.0
Fix Version/s: 0.24.0
Sorry to come in late.
This looks reasonable to me too. Or should we standardize such stuff inside of PlatformName itself?
In any case, added comments shall help greatly. Lets target this for trunk. Would you be willing to continue on this Stephen?
> Native Libraries do not load if a different platform signature is returned from org.apache.hadoop.util.PlatformName
> -------------------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-6895
> URL: https://issues.apache.org/jira/browse/HADOOP-6895
> Project: Hadoop Common
> Issue Type: Bug
> Components: native
> Affects Versions: 0.20.205.0
> Environment: SLES 10, IBM Java 6, Hadoop 0.21.0-rc0
> Reporter: Stephen Watt
> Priority: Minor
> Fix For: 0.24.0
>
> Attachments: HADOOP-6895.patch
>
> Original Estimate: 0h
> Remaining Estimate: 0h
>
> bin/hadoop-config.sh 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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