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From StefanRRichter <...@git.apache.org>
Subject [GitHub] flink pull request #2702: Improved heaptimerservice
Date Thu, 27 Oct 2016 11:37:33 GMT
GitHub user StefanRRichter opened a pull request:

    https://github.com/apache/flink/pull/2702

    Improved heaptimerservice

    This PR improves the performance of `HeapInternalTimerService`by pushing all key-group
related overhead into the snapshot part. This is done by performing efficient online-partitioning
w.r.t. key-group at the beginning of a snapshot.
    
    While this adds small computational and space overhead (both linear in the number of registered
timers), I believe this is well worth getting rid of nested sets on timer processing.
    
    Furthermore, this can now be extended to perform the actual state writing asynchronously
in a followup work.


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

    $ git pull https://github.com/StefanRRichter/flink improved-heaptimerservice

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

    https://github.com/apache/flink/pull/2702.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 #2702
    
----
commit 938b4c9be8c5bd589424cb6410ae0c813546a485
Author: Stefan Richter <s.richter@data-artisans.com>
Date:   2016-10-27T11:21:54Z

    Improved performance for HeapInternalTimerService

commit 6b7389972c90dd17e801d180873dda885277a3fa
Author: Stefan Richter <s.richter@data-artisans.com>
Date:   2016-10-27T11:33:18Z

    Caching key hash codes

----


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