GitHub user gparai opened a pull request:
https://github.com/apache/drill/pull/533
[MD-880] - HashJoin's not fully parallelized in query plan
Resolve it by having a parameter for lower bound on filter selectivity.
This will prevent under-estimates and the resulting under parallelization of
the query.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gparai/drill MD-880-ADM
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/533.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 #533
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commit 94f184edef584255670486bd4ce7390fe84de2b6
Author: Gautam Parai <[email protected]>
Date: 2016-06-21T19:30:02Z
[MD-880] - Lower bound on filter selectivity
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