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https://issues.apache.org/jira/browse/FLINK-14936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhu Zhu updated FLINK-14936:
----------------------------
Description:
A MemoryManager#computeMemorySize(double fraction) is needed to calculate
managed memory bytes from a fraction.
It can be helpful for operators to get the memory size it can reserve and for
further #reserveMemory. (Similar to #computeNumberOfPages).
Here are two cases that may need this method in near future:
1. [Python operator memory
management|https://lists.apache.org/thread.html/dd4dedeb9354c2ee559cd2f15629c719853915b5efb31a0eafee9361@%3Cdev.flink.apache.org%3E]
2. [Statebackend memory
management|https://issues.apache.org/jira/browse/FLINK-14883]
was:
A MemoryManager#computeMemorySize(double fraction) is needed to calculate
managed memory from a fraction.
It can be helpful for operators to get the memory size it can reserve and for
further #reserveMemory. (Similar to #computeNumberOfPages).
Here are two cases that may need this method in near future:
1. [Python operator memory
management|https://lists.apache.org/thread.html/dd4dedeb9354c2ee559cd2f15629c719853915b5efb31a0eafee9361@%3Cdev.flink.apache.org%3E]
2. [Statebackend memory
management|https://issues.apache.org/jira/browse/FLINK-14883]
> Introduce MemoryManager#computeMemorySize to calculate managed memory of an
> operator from a fraction
> ----------------------------------------------------------------------------------------------------
>
> Key: FLINK-14936
> URL: https://issues.apache.org/jira/browse/FLINK-14936
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Coordination
> Affects Versions: 1.10.0
> Reporter: Zhu Zhu
> Priority: Major
>
> A MemoryManager#computeMemorySize(double fraction) is needed to calculate
> managed memory bytes from a fraction.
> It can be helpful for operators to get the memory size it can reserve and for
> further #reserveMemory. (Similar to #computeNumberOfPages).
> Here are two cases that may need this method in near future:
> 1. [Python operator memory
> management|https://lists.apache.org/thread.html/dd4dedeb9354c2ee559cd2f15629c719853915b5efb31a0eafee9361@%3Cdev.flink.apache.org%3E]
> 2. [Statebackend memory
> management|https://issues.apache.org/jira/browse/FLINK-14883]
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