-Re: pig not respecting parameters in mapred-site.xml
Prashant Kommireddi 2013-08-06, 20:32
Can you tell us how exactly you are running the pig script? Is your
mapred-site.xml on the classpath? Are you trying to run this via grunt or
On Tue, Aug 6, 2013 at 1:16 PM, Suhas Satish <[EMAIL PROTECTED]> wrote:
> I am running pig on a custom hadoop implementation but it doesnt respect
> params in mapred-site.xml.
> Looking into the code, I find that the following 2 files are slightly
> different from stock hadoop in that some patches are not present.
> Given the constraint that I cannot modify these files, what change should I
> make within pig to recognize mapred-site.xml parameters?
> I pulled in PIG-3135 and PIG-3145 which make changes to
> But the params in mapred-site.xml are still not getting recognized. Upon
> remote eclipse debugging with breakpoints in the file above, this is what
> I found -
> HExecutionEngine.java - jc = new jobConf()
> 1st call upon JobConf() constructor -
> Configuration.getProps() --> if properties ==null, properties = new
> Properties(); loadResources(properties, resources...);
> JobConf static constructor -
> HExecutionEngine: 2nd call jc.addResource("mapred-site.xml") -
> val = getProps().getProperty(name)
> if (val==null) val > <custom_hadoop_impl_configuration_object>.getDefault(name);
> HExecutionEngine: 3rd call recomputeProperties(jc, properties) -->
> clearing properties which were added so it gets reloaded again.
> What do I ned to do to make sure the getProps().getProperty call is not
> null so that the mapred-site.xml values are not over-ridden by defaults in
> custom_hadoop implementation ?