[jira] [Created] (FLINK-934) Job and TaskManager startup scripts always set JVM heap size

[Shang Yuanchun (Jira)]

Ufuk Celebi created FLINK-934:
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             Summary: Job and TaskManager startup scripts always set JVM heap size
                 Key: FLINK-934
                 URL: https://issues.apache.org/jira/browse/FLINK-934
             Project: Flink
          Issue Type: Improvement
            Reporter: Ufuk Celebi


The default distribution config {{stratosphere-conf.yaml}} contains keys {{jobmanager.heap.mb}} and {{taskmanager.heap.mb}} for the heap sizes of the JobManager and TaskManager JVMs. If they are not set, {{config.sh}} has default values for them.

We _always_ use one of these values and set the {{Xms}} and {{Xmx}} properties. After a short discussion with [~rmetzger] and [~StephanEwen] we actually expected that they should not be set if not found in {{stratosphere-conf.yaml}}. This would result in a fall back to the respective JVM default (imho 1/4th of the physical memory since Java 6).





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