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Turning off Speculative Execution

 

I am running hadoop 0.20 and hive 07 , and my conf/mapred-site.xml says speculative execution is false.

Yet when I examine the joblog xml of the running job it says speculative execution is true ,
and I see occasions where it has started mutiple executions of a reduce .

How can I turn speculative execution off given my mapred-site.xml ?

John Yard
technicolor

Tags: execution, speculative

Views: 22

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Permalink Reply by Vikas Srivastava on January 28, 2012 at 10:36am

Hey John,

U just need Alter that block and put final in mapred-site.xml.

like

<final>true<final>

regards

Vikas Srivastava

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