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https://reviews.apache.org/r/58768/
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Review request for Aurora, David McLaughlin, Stephan Erb, and Zameer Manji.


Bugs: AURORA-1924
    https://issues.apache.org/jira/browse/AURORA-1924


Repository: aurora


Description
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Aurora scheduler rejects a request to create a job if a job with the same key 
already exists. Aurora client exits with an error once it receives a response 
with `ResponseCode.INVALID_REQUEST` from scheduler in this case.

However, an attempt to create a job with the exact same configuration and 
number of instances is essentially idempotent. Scheduler can detect this 
situation, ignore it, and signal client to treat operation as successful; 
client warns user about existing job but does not fail the operation.


Diffs
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  api/src/main/thrift/org/apache/aurora/gen/api.thrift 
3749531b5412d7ca217736aa85eed8e6606225ad 
  
src/main/java/org/apache/aurora/scheduler/thrift/SchedulerThriftInterface.java 
059fbb86a575f5b3d78a63c9a7b5a9eebb6cb3ae 
  src/main/python/apache/aurora/client/cli/jobs.py 
b79ae56bee0e5692cacf1e66f4a4126b06aaffdc 
  
src/test/java/org/apache/aurora/scheduler/thrift/SchedulerThriftInterfaceTest.java
 016859ca3bf83f64d2576b4c7109729770f9e25c 
  src/test/python/apache/aurora/client/cli/test_create.py 
3b09bb25e919bac2795ccd56bd98657b1f98690b 


Diff: https://reviews.apache.org/r/58768/diff/1/


Testing
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- Manually under Vagrant
- End to end test script


Thanks,

Mehrdad Nurolahzade

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