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Posted to dev@flink.apache.org by "zhijiang (JIRA)" <ji...@apache.org> on 2017/08/07 02:32:00 UTC

[jira] [Created] (FLINK-7377) Implement FixedBufferPool for floating buffers in SingleInputGate

zhijiang created FLINK-7377:
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             Summary: Implement FixedBufferPool for floating buffers in SingleInputGate
                 Key: FLINK-7377
                 URL: https://issues.apache.org/jira/browse/FLINK-7377
             Project: Flink
          Issue Type: Task
          Components: Core
    Affects Versions: 1.4.0
            Reporter: zhijiang
            Assignee: zhijiang


Currently the number of network buffers in {{LocalBufferPool}} for {{SingleInputGate}} is limited by {{a * <number of channels> + b}}, where a is the number of exclusive buffers for each channel and b is the number of floating buffers shared by all channels.

Considering the credit-based flow control feature, we want to implement a new fixed size buffer pool type used to manage the floating buffers for {{SingleInputGate}}. 

Compared with {{LocalBufferPool}}, this is a non-rebalancing buffer pool which will not participate in redistributing the left available buffers in {{NetworkBufferPool}}.



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