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From David McLaughlin <>
Subject Re: Review Request 59039: Add the ability to customize scheduling logic.
Date Tue, 09 May 2017 21:42:58 GMT

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(Updated May 9, 2017, 9:42 p.m.)

Review request for Aurora, Santhosh Kumar Shanmugham, Stephan Erb, and Zameer Manji.


Added code sample of how this can be used.

Bugs: AURORA-1920

Repository: aurora


Add the ability to replace the first-fit scheduling algorithm and associated first-fit preemption

See design/proposal document here:


  src/main/java/org/apache/aurora/scheduler/preemptor/ PRE-CREATION

  src/main/java/org/apache/aurora/scheduler/preemptor/ PRE-CREATION

  src/main/java/org/apache/aurora/scheduler/preemptor/ 66d20290d381c041ac2f28903d6ba1468b352172

  src/main/java/org/apache/aurora/scheduler/state/ PRE-CREATION

  src/main/java/org/apache/aurora/scheduler/state/ 0186484208965c5b8942ec76eb078b30190c7d57

  src/test/java/org/apache/aurora/scheduler/preemptor/ da064e3589951d4f4cbff96d1ed89d9d7e4d3882


Testing (updated)


I've used this in one of our large-scale test clusters to plug in a custom task assigner.
We were able to remove our modifications to the OSS code-base and use this mechanism to do
what we need. Here is a rough gist of what it looks like:


David McLaughlin

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