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From Bikas Saha <>
Subject RE: speculative execution in Hive over Tez
Date Mon, 15 Sep 2014 16:56:00 GMT
Currently there isn’t any support for this in Tez. Expect it to be added

*From:* Grandl Robert []
*Sent:* Sunday, September 14, 2014 5:26 PM
*Subject:* speculative execution in Hive over Tez

Hi guys,

I am wondering how to enable speculative execution when running Hive
queries over Tez.

In MapReduce there are parameters for map/reduce tasks in mapred-site.xml.
For Hive, it looks like they are similar when running over MapReduce.

However, I cannot find anything related to enable speculative execution in
tez, or hive for tez.

Do you have any idea how I can do that ? Or it is the same
"hive.mapred.reduce.tasks.speculative.execution" which works only for



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