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

Symptoms

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

 

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms