Stephan Ewen created FLINK-4525:
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Summary: Drop the "eager split pre-assignment" code paths
Key: FLINK-4525
URL: https://issues.apache.org/jira/browse/FLINK-4525
Project: Flink
Issue Type: Improvement
Components: JobManager
Affects Versions: 1.1.2
Environment:
Reporter: Stephan Ewen
Assignee: Stephan Ewen
Fix For: 1.2.0
There is currently an interface for input splits {{StrictlyLocalAssignment}}
that is half-heartedly supported in the JobManager (it is, for example, not
fault tolerant).
I suggest to drop these special cases for the following reasons:
- they do not fit the assumptions of all the rest of the system well
(localize where possible, but never constrain)
- they make the logic of implemented as part of dynamic resource acquisition
hard
- they are not fully implemented even today
- I am not aware of anyone using this feature
- It is complicated to maintain
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