HADOOP_NAMENODE_OPTS="-Xmx500m" will set it to 500MB. The "OPTS" here
refers to JVM options. -Xmx is a common JVM option to set the maximum
On Wed, Dec 1, 2010 at 4:27 AM, Dave Shine
<[EMAIL PROTECTED]> wrote:
> I'm using 0.20.2.
> I've seen references to HADOOP_NAMENODE_OPTS, but nothing that clearly explains how to set them.
> Any help would be greatly appreciated.
> Dave Shine
> -----Original Message-----
> From: Hemanth Yamijala [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, November 30, 2010 9:39 PM
> To: [EMAIL PROTECTED]
> Subject: Re: Configuring Heap Size for Name Node
> On Wed, Dec 1, 2010 at 1:38 AM, Dave Shine
> <[EMAIL PROTECTED]> wrote:
>> How do I change the heap size for the Name Node (and Secondary Name Node) without changing the heap size for the data nodes, job tracker, and task trackers?
> Which version are you using. I am pretty certain that 0.21 and above
> have HADOOP_NAMENODE_OPTS which can be used to set the heap size only
> for NameNode. You can check if this option is defined in
>> Dave Shine
>> Sr. Software Engineer
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