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From "Bill Farner" <wfar...@apache.org>
Subject Re: Review Request 26422: Drop syncrhonized from JobUpdateEventSubscriber
Date Wed, 08 Oct 2014 16:19:39 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/26422/#review55803
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While our minds are on deadlock risks, it's a good idea to assess other potential vulnerabilities.

A quick filter to find other potential sources deserving a glance:
    $ grep -Rl synchronized src/main/java | xargs grep -l Storage
    src/main/java/org/apache/aurora/scheduler/async/GcExecutorLauncher.java
    src/main/java/org/apache/aurora/scheduler/async/Preemptor.java
    src/main/java/org/apache/aurora/scheduler/async/TaskScheduler.java
    src/main/java/org/apache/aurora/scheduler/storage/log/LogStorage.java
    src/main/java/org/apache/aurora/scheduler/storage/mem/MemTaskStore.java
    src/main/java/org/apache/aurora/scheduler/TaskVars.java
    src/main/java/org/apache/aurora/scheduler/updater/JobUpdateControllerImpl.java

- Bill Farner


On Oct. 7, 2014, 7:28 p.m., Kevin Sweeney wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/26422/
> -----------------------------------------------------------
> 
> (Updated Oct. 7, 2014, 7:28 p.m.)
> 
> 
> Review request for Aurora, Bill Farner and Zameer Manji.
> 
> 
> Bugs: AURORA-801
>     https://issues.apache.org/jira/browse/AURORA-801
> 
> 
> Repository: aurora
> 
> 
> Description
> -------
> 
> Drop syncrhonized from JobUpdateEventSubscriber
> 
> This fixes a startup deadlock.
> 
> 
> Diffs
> -----
> 
>   src/main/java/org/apache/aurora/scheduler/updater/JobUpdateEventSubscriber.java 49d8b7a6c4adc4c58049c439bd09019c9e6885b1

> 
> Diff: https://reviews.apache.org/r/26422/diff/
> 
> 
> Testing
> -------
> 
> ./gradlew -Pq build
> 
> Manually verified that all delegated calls to the JobUpdateController are already protected
by the storage write-lock.
> 
> Rather than add a potentially-flaky regression test (like the one added in https://reviews.apache.org/r/25556/)
I'd prefer to prioritize adding runtime deadlock detection (https://issues.apache.org/jira/browse/AURORA-800).
> 
> 
> Thanks,
> 
> Kevin Sweeney
> 
>


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