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Posted to common-issues@hadoop.apache.org by "Fernando (JIRA)" <ji...@apache.org> on 2009/07/23 03:55:14 UTC
[jira] Updated: (HADOOP-6167) bin/hadoop script doesn't allow for
different memory settings for each daemon type
[ https://issues.apache.org/jira/browse/HADOOP-6167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Fernando updated HADOOP-6167:
-----------------------------
Attachment: hadoop
proposed new bin/hadoop script file.
The only change is in the last few lines.
> bin/hadoop script doesn't allow for different memory settings for each daemon type
> ----------------------------------------------------------------------------------
>
> Key: HADOOP-6167
> URL: https://issues.apache.org/jira/browse/HADOOP-6167
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 0.20.0
> Reporter: Fernando
> Attachments: hadoop
>
>
> bin/hadoop assumes that all daemon types ( namenode, datanode, jobtracker, tasktracker ), all use the same memory settings.. (HADOOP_HEAPSIZE).
> I propose changes to that script to allow overriding the default memory ( HADOOP_HEAPSIZE ), with daemon specific OPTS (HADOOP_NAMENODE_OPTS, etc ).
> Basically at the bottom of the bin/hadoop script, it will check to see if the user has already set "-Xmx" in the HADOOP_OPTS variable.. if so, then it will ignore the JAVA_HEAP_SIZE variable..
> as such:
> # run it
> if [[ $HADOOP_OPTS == *-Xmx* ]]; then
> exec "$JAVA" $HADOOP_OPTS -classpath "$CLASSPATH" $CLASS "$@"
> else
> exec "$JAVA" $JAVA_HEAP_MAX $HADOOP_OPTS -classpath "$CLASSPATH" $CLASS "$@"
> fi
> I will attach the file as I have modified it..
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