GitHub user sraghunandan opened a pull request:
https://github.com/apache/incubator-carbondata/pull/487
[CARBONDATA-581] Wrong number of executors requested when preferred
locations are not obtained
Wrong number of executors requested when preferred locations are not
obtained.
In case of groupby in subquery, we'll not get the preferred locations from
the RDD as data is shuffled.
In such cases we need to use number of executors available.
This is applicable in case of dynamic executors
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/sraghunandan/incubator-carbondata
zero_preferred_locations
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-carbondata/pull/487.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #487
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commit f902f8dbca2efead36cfea39ac887c28970da89e
Author: vincentchenfei <[email protected]>
Date: 2016-12-30T19:00:53Z
in case of group by queries, we'll get the node locality as 0
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