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From Zameer Manji <zma...@apache.org>
Subject Re: Review Request 56797: Move task conversion during reconciliation into the delayed closure.
Date Sat, 18 Feb 2017 00:21:15 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/56797/#review166007
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Ship it!




Ship It!

- Zameer Manji


On Feb. 17, 2017, 4:13 p.m., David McLaughlin wrote:
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/56797/
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> (Updated Feb. 17, 2017, 4:13 p.m.)
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> 
> Review request for Aurora, Mehrdad Nurolahzade and Zameer Manji.
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> Repository: aurora
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> Description
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> This is a small change to relieve GC pressure while explicit reconciliation runs. It
moves the IScheduledTask -> TaskStatus conversion into the batch processing closure so
that any object allocation and collection overhead is delayed until the batch is actually
processed. It has a noticable effect on GC for large amounts of RUNNING tasks.
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> 
> Diffs
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>   src/main/java/org/apache/aurora/scheduler/reconciliation/TaskReconciler.java ec7ccafcd360c00beceb067963bc430b6b8d8256

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> Diff: https://reviews.apache.org/r/56797/diff/
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> 
> Testing
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> This is running in prod at Twitter. Our post-snapshot stop the world GC hit is reduced
dramatically maybe about 80% of the time with this change.
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> 
> Thanks,
> 
> David McLaughlin
> 
>


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