GitHub user zuyu opened a pull request:

    https://github.com/apache/incubator-quickstep/pull/273

    Determine #Partitions for Aggr State Hash Table in the optimizer.

    This PR allows the optimizer to determine the number of partitions for an 
aggregation state hash table, instead of getting it during the run-time from 
the aggregation state.
    
    Assigned to @jianqiao.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/zuyu/incubator-quickstep 
aggr-state-num-partitions

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-quickstep/pull/273.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 #273
    
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commit 3d9926db375328e1150a30220d3c95c46510c763
Author: Zuyu Zhang <z...@cs.wisc.edu>
Date:   2017-07-20T20:33:54Z

    Determine #Partitions for Aggr State Hash Table in the optimizer.

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