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https://reviews.apache.org/r/63884/
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Review request for Aurora, Jordan Ly and Stephan Erb.


Repository: aurora


Description
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JobUpdateStore historically had granular APIs in the storage layer to
minimize unnecessary use of 'expensive' database objects.  The
in-memory store makes these 'free', so moving business logic out of
the storage layer is now feasible for performance and pragmatic.

This patch also introduces idempotent log `Op`s for job updates.
These ops are dual-read with the existing `Op`s (with the exception of
job update pruning, which should be safe to ignore).  In a future
release (and possibly before, with a feature flag), the scheduler
will write the idempotent `Op`s instead of the non-idempotent variants.

LogStorage has always had the fundamental expectation that `Op`s are
idempotent.  The to-be-replaced `Op`s violate this requirement.
Per `LogStorage.java`:
    This design implies that all mutations must be idempotent and free from
    constraint and thus replayable over newer operations when recovering
    from an old checkpoint.


Diffs
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  api/src/main/thrift/org/apache/aurora/gen/storage.thrift 
c692a5f3d715599c949c8fbef8b05c24174829e3 
  src/jmh/java/org/apache/aurora/benchmark/JobUpdates.java 
a5d1894a80db13632bf03f593ead46987f1c667b 
  src/jmh/java/org/apache/aurora/benchmark/UpdateStoreBenchmarks.java 
c98c514bfc28afaad44bda355720347dd9ee2d3e 
  src/main/java/org/apache/aurora/scheduler/pruning/JobUpdateHistoryPruner.java 
b2768d98f7c7b0632cd31656640fcb053bcd3be1 
  src/main/java/org/apache/aurora/scheduler/quota/QuotaManager.java 
7f8c66cae388571cd3eef2668d1b42e3925dc7e8 
  src/main/java/org/apache/aurora/scheduler/storage/JobUpdateStore.java 
b3d906b96f9bfe6e4d3fcc9f3a5d02819a1ef9fe 
  src/main/java/org/apache/aurora/scheduler/storage/log/LogStorage.java 
3ce2c7fc06082ae0ca7a77a33bb7f333212a048c 
  src/main/java/org/apache/aurora/scheduler/storage/log/SnapshotStoreImpl.java 
57c483b049c40b56d8c83e3dcce67de00113853b 
  src/main/java/org/apache/aurora/scheduler/storage/log/StreamManagerImpl.java 
baf2647c54f1f9918139584e5151873a3853e83c 
  src/main/java/org/apache/aurora/scheduler/storage/log/WriteAheadStorage.java 
4d051fc4ab280418c7df70924c5e5b496c2ce052 
  src/main/java/org/apache/aurora/scheduler/storage/mem/MemJobUpdateStore.java 
826cee9c5c27b80dec55af6fb64fbe9bd72fe03e 
  src/main/java/org/apache/aurora/scheduler/thrift/ReadOnlySchedulerImpl.java 
bba1161a48738e19f10fcf72395f8d70b481ed13 
  
src/main/java/org/apache/aurora/scheduler/updater/JobUpdateControllerImpl.java 
dc8d11c5003b2637b921b6afa6e2cb5f13102858 
  
src/test/java/org/apache/aurora/scheduler/pruning/JobUpdateHistoryPrunerTest.java
 74db5ecd8f63a2df4e24ca83a03c22e90936bbae 
  src/test/java/org/apache/aurora/scheduler/quota/QuotaManagerImplTest.java 
6be4a9c4145ab38905f153a07a022707186a862c 
  
src/test/java/org/apache/aurora/scheduler/storage/AbstractJobUpdateStoreTest.java
 9fab7aeb99b155cc55c778c9b27e92daa97fe47e 
  src/test/java/org/apache/aurora/scheduler/storage/log/LogStorageTest.java 
c208210497454fabd7b3c6d41b4b5f40b1a6bb69 
  
src/test/java/org/apache/aurora/scheduler/storage/log/WriteAheadStorageTest.java
 d5e5c11ad09415e861edfaa521c53fd7904d1bfd 
  
src/test/java/org/apache/aurora/scheduler/thrift/ReadOnlySchedulerImplTest.java 
39456cfe8b8c8e198a6f8c82e09769bd75db2adc 
  src/test/java/org/apache/aurora/scheduler/updater/JobUpdaterIT.java 
661ce58a840e5a23ff5438517880877cd90d0537 


Diff: https://reviews.apache.org/r/63884/diff/1/


Testing
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Thanks,

Bill Farner

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