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MapReduce >> mail # dev >> I wrote a scheduler. How to compile and put it to action?

Sreejith Ramakrishnan 2013-07-07, 22:35
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Re: I wrote a scheduler. How to compile and put it to action?
To compile it to a jar, rely on your build framework. Or pack it up
with "jar cf jarfile dirs…"? This is more of a Java question, can be
googled and is specific to the tool you use.

To set it into effect, for 1.x, drop the jar into the
$HADOOP_HOME/lib/ directory and set the
mapred.jobtracker.taskScheduler property in mapred-site.xml to your
fully qualified classname, and restart JT.

P.s. I'd recommend writing a 2.x scheduler as thats where the
project's moving and a load of things have changed. The 1.x scheduler
won't be compatible with the new 2.x releases.

On Mon, Jul 8, 2013 at 4:05 AM, Sreejith Ramakrishnan
> Hey,
> I just wrote a task scheduler for hadoop (1.0.3). It's based on MR1
> syntax.
> I want to know how to compile it (to a jar?) and where to put the compiled
> target so that I can make hadoop use it.  Hope some experts can shed some
> light.
> Sincerely,
> Sreejith R
> P. S: I had asked another question recently. I got very good answers.  I
> was so busy I couldn't even thank them. Special thanks to Kun Ling

Harsh J
Sreejith Ramakrishnan 2013-07-10, 15:37