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https://issues.apache.org/jira/browse/FLINK-15037?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhu Zhu updated FLINK-15037:
----------------------------
Description:
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}}.
Some more detailed discussions can be found in FLINK-14936.
cc [~azagrebin]
was:
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]
> 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
> Priority: Major
>
> 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}}.
> Some more detailed discussions can be found in FLINK-14936.
> cc [~azagrebin]
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