Stephen Gran created FLINK-8066:
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Summary: Changed configuration of taskmanagers should recreate them
Key: FLINK-8066
URL: https://issues.apache.org/jira/browse/FLINK-8066
Project: Flink
Issue Type: New Feature
Reporter: Stephen Gran
Priority: Minor
When we redeploy the jobmanager to our mesos cluster with changed parameters
affecting the taskmanagers (eg, change from 1 CPU per TM to 2 CPUs per TM), the
existing taskmanagers are reused rather than replaced with new taskmanagers
with new parameters.
It seems like `recoverWorkers` in
`org.apache.flink.mesos.runtime.clusterframework.MesosFlinkResourceManager` has
most of the information it would need to be able to perform this convergence,
and it doesn't seem like a large amount of work to do the check.
My concern with starting to work on the issue there is that there may be a
higher level, perhaps in `FlinkResourceManager` that should perform this work
on both mesos and yarn. The two implementations look quite different, however,
so this may be an over eager optimisation best left for later. I'm happy to
look at a patch for this, but I wanted some input before starting the work to
see where you thought this should live.
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