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https://issues.apache.org/jira/browse/FLINK-6337?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15982545#comment-15982545
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Ufuk Celebi commented on FLINK-6337:
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Hey [~zjwang]! I think the buffer pool is required for spillable result
partitions (when creating SpillableSubpartitionView). When they are consumed, a
buffer provider needs to be given to the partition to copy the buffers to. I
think this is not implemented in an efficient way at the moment (ideally the
copy should not be necessary), but the proper implementation would require some
more involved refactorings.
> Remove the buffer provider from PartitionRequestServerHandler
> -------------------------------------------------------------
>
> Key: FLINK-6337
> URL: https://issues.apache.org/jira/browse/FLINK-6337
> Project: Flink
> Issue Type: Improvement
> Components: Network
> Reporter: zhijiang
> Assignee: zhijiang
> Priority: Minor
>
> Currently, {{PartitionRequestServerHandler}} will create a
> {{LocalBufferPool}} when the channel is registered. The {{LocalBufferPool}}
> is only used to get segment size for creating read view in
> {{SpillableSubpartition}}, and the buffers in the pool will not be used all
> the time, so it will waste the buffer resource of global pool.
> We would like to remove the {{LocalBufferPool}} from the
> {{PartitionRequestServerHandler}}, and the {{LocalBufferPool}} in
> {{ResultPartition}} can also provide the segment size for creating sub
> partition view.
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