[Swift-devel] status race in batch mode local execution

[Ben Clifford]

in batch mode local execution, there's a status race which makes batch 
job sometimes go Submitted->Completed->Active

I have seen this manifest in cleanup jobs at the end of a workflow.

the task gets set to ACTIVE in the run method in the new execution thread, 
but in the case of a batch job gets set to COMPLETED in the submitting 
thread; these two status-sets are unordered.

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