[jira] [Created] (FLINK-15037) Introduce LimittingMemoryManager as operator scope MemoyManager

[Shang Yuanchun (Jira)]

Zhu Zhu created FLINK-15037:
-------------------------------

             Summary: Introduce LimittingMemoryManager as operator scope MemoyManager
                 Key: FLINK-15037
                 URL: https://issues.apache.org/jira/browse/FLINK-15037
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination
    Affects Versions: 1.10.0
            Reporter: Zhu Zhu


Current {{MemoryManager}} is slot scope component, and the operators needs to use a fraction to compute memory size/pages it can allocate and use it to reserver memory or allocate pages.
This, however, requires operators to be aware of the managed memory fraction. There is also risk that one operator may over allocate resources than it has declared and causes other operators to break.

To separate concerns, we can introduce a {{LimittingMemoryManager}} which wraps the the original MemoryManager but limit the available memory size to the fraction of total memory governed by the original one. This wrapper would be a operator scope {{MemoryManager}}.

cc [~azagrebin]



--
This message was sent by Atlassian Jira
(v8.3.4#803005)