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https://issues.apache.org/jira/browse/FLINK-5138?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhijiang closed FLINK-5138.
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Resolution: Workaround
> Add the method in state backend to estimate memory by hint of state size in
> ResourceSpec
> ----------------------------------------------------------------------------------------
>
> Key: FLINK-5138
> URL: https://issues.apache.org/jira/browse/FLINK-5138
> Project: Flink
> Issue Type: Sub-task
> Components: State Backends, Checkpointing
> Reporter: zhijiang
> Assignee: zhijiang
> Priority: Major
>
> Users may specify the state size in {{setResources}} API, then the state
> backend would roughly estimate the different kinds of memory usages based on
> the state size. Currently the specific state backend ({{FsStateBackend}},
> {{MemoryStateBackend}}, etc) can implement the default unknown resource for
> it to work around.
> There are two advantages to do this:
> - This estimate memory will be considered together when requesting resource
> for container, so the total memory usage will not exceed the container limit.
> - Especially for {{RocksDB}} backend, the proper memory setting for
> {{RocksDB}} may get better performance in read and write operation.
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