Zhu Zhu created FLINK-15037:
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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]
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