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Posted to common-dev@hadoop.apache.org by "Stephen Watt (JIRA)" <ji...@apache.org> on 2010/08/24 21:50:17 UTC
[jira] Created: (HADOOP-6923) Native Libraries do not load if a
different platform signature is returned from
org.apache.hadoop.util.PlatformName
Native Libraries do not load if a different platform signature is returned from org.apache.hadoop.util.PlatformName
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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
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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RE: [jira] Created: (HADOOP-6923) Native Libraries do not load if a
different platform signature is returned from
org.apache.hadoop.util.PlatformName
Posted by "Segel, Mike" <ms...@navteq.com>.
This may seem like a silly question...
Is there anyone using a 32bit JRE environment these days?
Also I notice this is for 0.20.3 is this still an issue in 0.89 or 0.20.6?
I really am curious if anyone outside of IBM is using 32bit Java in any capacity w hadoop?
Thx
-Mike
-----Original Message-----
From: Stephen Watt (JIRA) [mailto:jira@apache.org]
Sent: Tuesday, August 24, 2010 2:50 PM
To: common-dev@hadoop.apache.org
Subject: [jira] Created: (HADOOP-6923) Native Libraries do not load if a different platform signature is returned from org.apache.hadoop.util.PlatformName
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
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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You can reply to this email to add a comment to the issue online.
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