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From "Kevin Sweeney" <>
Subject Re: Review Request 16874: Deprecate CronCollisionPolicy.RUN_OVERLAP.
Date Fri, 17 Jan 2014 02:23:01 GMT

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(Updated Jan. 16, 2014, 6:22 p.m.)

Review request for Aurora, Maxim Khutornenko and Bill Farner.


Rebase onto latest master.

Bugs: AURORA-38

Repository: aurora


Deprecate CronCollisionPolicy.RUN_OVERLAP.

To prevent cluster starvation, the scheduler now ignores new cron jobs
with RUN_OVERLAP and behaves like CANCEL_NEW for existing ones. The
choice of CANCEL_NEW was arbitrary but IMO fits with the mental
preemption model of Aurora better (you're never guaranteed that a new
instance will schedule but Aurora doesn't tend to kill existing
instances outside of an established preemption routine).

Diffs (updated)

  src/main/java/org/apache/aurora/scheduler/configuration/ f7890186a0fc10ee9fcceff63bbb671dc41eb3be

  src/main/java/org/apache/aurora/scheduler/state/ b772712b8b3c1e7eb53bfbf55e9d2fc4ee9d5ad9

  src/main/thrift/org/apache/aurora/gen/api.thrift 927552a2c9ee90bc282583d99d3cf49a2b1edc25

  src/test/java/org/apache/aurora/scheduler/configuration/ c9ffc70c537ad2b4e72fa6aaaf39ab4478a230af

  src/test/java/org/apache/aurora/scheduler/state/ 9291fe668a30c32bed6791351c0fa905e57c26c1

  src/test/java/org/apache/aurora/scheduler/state/ c67912365e1ca40a6d0d57cce6dc169306d17f10



./gradlew build


Kevin Sweeney

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