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src/main/java/org/apache/aurora/scheduler/updater/strategy/VariableBatchStrategy.java
Lines 107-111 (patched)
<https://reviews.apache.org/r/66192/#comment279975>

    Is this idea of a step sate needed? Strategies writing to the database 
seems like a design smell. 
    
    If I have 10 instances:
    
    [0,1,2,3,4,5,6,7,8,9] 
    
    And I pass a VariableBatchStrategy of: [1, 4, 5]
    
    Then using the BatchStrategy it is *always* in the following order:
    
    [[0], [1,2,3,4], [5,6,7,8,9]]
    
    And I don't *think* I need to write the step to the database to figure out 
which step I'm in? I can use the number idle and active to figure out exactly 
how many have been processed.


- David McLaughlin


On March 21, 2018, 2:10 a.m., Renan DelValle wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/66192/
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> 
> (Updated March 21, 2018, 2:10 a.m.)
> 
> 
> Review request for Aurora, David McLaughlin, Santhosh Kumar Shanmugham, and 
> Stephan Erb.
> 
> 
> Repository: aurora
> 
> 
> Description
> -------
> 
> Adding support for variable group sizes when executing an update.
> 
> Design doc for this change is here: 
> https://docs.google.com/document/d/1xGk4ueH8YlmJCk6hQJh85u4to4M1VQD0l630IOchvgY/edit#heading=h.lg3hty82f5cz
> 
> I opted for the path of least resistance with regards to the Thrift changes 
> as I didn't see any benefit in making the larger changes required to make the 
> interfaces a bit more flexible.
> 
> Requesting feedback on these changes and the approach from the community 
> before I proceed.
> 
> Tests will be added after the community approves of the direciton and 
> approach.
> 
> Note to reviewers: Changes made in ActiveLimitedStrategy.java were made to 
> move towards getting rid of FluentIterable. I figured since I was touching 
> that code, it wouldn't hurt to test the Java 8 equivalent of it. I can get 
> rid of the change here and make it in a separate patch if desired.
> 
> 
> Diffs
> -----
> 
>   api/src/main/thrift/org/apache/aurora/gen/api.thrift 
> ef754e32172e7490a47a13e7b526f243ffa3efeb 
>   api/src/main/thrift/org/apache/aurora/gen/storage.thrift 
> b79e2045ccda05d5058565f81988dfe33feea8f1 
>   src/main/java/org/apache/aurora/scheduler/storage/JobUpdateStore.java 
> b25f3831cecc58c90375c90b16142421f8f09e38 
>   src/main/java/org/apache/aurora/scheduler/storage/durability/Loader.java 
> 10864f122eff5027c88d835baae6de483d960218 
>   
> src/main/java/org/apache/aurora/scheduler/storage/durability/WriteRecorder.java
>  8d70cae35289a9e36142bab288cf0c9398ebd2d4 
>   
> src/main/java/org/apache/aurora/scheduler/storage/mem/MemJobUpdateStore.java 
> 9e86b9e276ea90a249284a824705b5bbf19dcbce 
>   
> src/main/java/org/apache/aurora/scheduler/thrift/SchedulerThriftInterface.java
>  9fc0416086dd3eb2e2f4e8f659da59fcdea2b22b 
>   
> src/main/java/org/apache/aurora/scheduler/updater/JobUpdateControllerImpl.java
>  f8be8058f3a80a18b999d2666e2adb33e1e55fef 
>   src/main/java/org/apache/aurora/scheduler/updater/UpdateFactory.java 
> 3992aa77fc305adc390a4aaeb1d3939d6241ddbd 
>   
> src/main/java/org/apache/aurora/scheduler/updater/strategy/ActiveLimitedStrategy.java
>  855ea9c20788b51695b7eff5ac0970f0d52a9546 
>   
> src/main/java/org/apache/aurora/scheduler/updater/strategy/VariableBatchStrategy.java
>  PRE-CREATION 
> 
> 
> Diff: https://reviews.apache.org/r/66192/diff/1/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Renan DelValle
> 
>

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