GitHub user zuyu opened a pull request:

    Allowed pipelined work order scheduling.

    This PR enabled pipelined work order scheduling, and thus improves the 
query execution time, particularly for a complex query with a deep execution 
plan. In other words, once a data pipelining message is received, the work 
order could be scheduled immediately.

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

    $ git pull pipeling-scheduling

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

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #278
commit 48a598ebdb725c4c27d561d6f65901b9daf2df81
Author: Zuyu Zhang <>
Date:   2017-07-29T17:01:13Z

    Allowed pipelined work order scheduling.


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