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From Karthik Kambatla <ka...@cloudera.com>
Subject Re: Removal of unused properties
Date Thu, 09 Apr 2015 19:00:59 GMT
Should be okay to remove.

The policy was intended for configs that continue to be relevant like
mapred.child.java.opts. In this case, since there is no TaskTracker
anymore, leaving this config purely for compat reasons seems unnecessary.
We could also improve the policies to clarify this.

On Thu, Apr 9, 2015 at 4:33 AM, Akira AJISAKA <ajisakaa@oss.nttdata.co.jp>

> Hi Folks,
> In MAPREDUCE-6307, I'd like to remove unused "mapreduce.tasktracker.
> taskmemorymanager.monitoringinterval" property, however, the
> compatibility document says "Hadoop-defined properties are to be deprecated
> at least for one major release before being removed."
> http://hadoop.apache.org/docs/r2.6.0/hadoop-project-dist/
> hadoop-common/Compatibility.html#Hadoop_Configuration_Files
> Is it applicable for unused properties?
> Can we remove unused properties right now?
> Regards,
> Akira

Karthik Kambatla
Software Engineer, Cloudera Inc.

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