Disabling Speculative Execution for Hive Based Queries

(Doc ID 1613450.1)

Last updated on OCTOBER 11, 2016

Applies to:

Big Data Appliance Integrated Software - Version 2.1.0 and later
Linux x86-64


When a hive query executed from both Hive client as well as Hue / Beeswax, the mapred.reduce.tasks.speculative.execution parameter is getting set to True.

In the job configuration xml file(job_<id>_conf.xml) generated, below settings are noticed:

mapred.reduce.tasks.speculative.execution = true
hive.mapred.reduce.tasks.speculative.execution = true
mapred.map.tasks.speculative.execution = false



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