[Openstack] Sahara: Change Java heap space

Sergey Lukjanov slukjanov at mirantis.com
Mon Aug 11 12:25:47 UTC 2014


Hi,

which plugin are you using?

On Tue, Jul 29, 2014 at 6:42 AM, Dat Tran <dattbbk at gmail.com> wrote:
> Hi everybody,
>
> I have created a cluster hadoop (When create Node group template, I have
> modified mapred.child.java.opts: "-Xmx200m" to "-Xmx1024m"). Then i ssh to
> master-instance and run: "hadoop jar hadoop-examples-1.2.1.jar pi 10 100", I
> get the error:
> java.lang.OutOfMemoryError: Java heap space
>
> Check file /etc/hadoop/hadoop-env.sh. I see:
> Default: export HADOOP_CLIENT_OPTS="-Xmx128m HADOOP_CLIENT_OPTS"
>
> Then, I edit 128 to 1024:
> export HADOOP_CLIENT_OPTS="-Xmx1024m $HADOOP_CLIENT_OPTS"
>
> When run "hadoop jar hadoop-examples-1.2.1.jar pi 10 100", it's worked! But,
> my cluster still in a state: "Watting" and ip_master:50030/jobtracker.jps
> not running?
>
> Why HADOOP_CLIENT_OPTS in /etc/hadoop/hadoop-env.sh not automatic update
> when create cluster?
>
> What is the problem here? Thank you very much!
>
>
>
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-- 
Sincerely yours,
Sergey Lukjanov
Sahara Technical Lead
(OpenStack Data Processing)
Principal Software Engineer
Mirantis Inc.




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