[jira] [Created] (FLINK-15023) Remove on-heap managed memory

[Shang Yuanchun (Jira)]

Xintong Song created FLINK-15023:
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             Summary: Remove on-heap managed memory
                 Key: FLINK-15023
                 URL: https://issues.apache.org/jira/browse/FLINK-15023
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Configuration
            Reporter: Xintong Song


As mentioned in [this discussion thread|http://apache-flink-mailing-list-archive.1008284.n3.nabble.com/DISCUSS-Make-Managed-Memory-always-off-heap-Adjustment-to-FLIP-49-td35365.html], we want to make managed memory always off-heap.

This task include changes:
* Remove `MEMORY_OFF_HEAP`, `MANAGED_MEMORY_OFFHEAP_FRACTION` and `MANAGED_MEMORY_OFFHEAP_SIZE` from `TaskManagerOptions`.
* Remove `onHeapManagedMemory` from `ResourceProfile`, `ResourceSpec` and `TaskExecutorResourceSpec`.
* Remove on heap managed memory from `MemoryManager`
* Remove on heap managed memory fraction from `StreamConfig`.



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