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Posted to issues@flink.apache.org by "fanrui (Jira)" <ji...@apache.org> on 2022/05/06 06:36:00 UTC

[jira] [Created] (FLINK-27522) Ignore max buffers per channel when allocate buffer

fanrui created FLINK-27522:
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             Summary: Ignore max buffers per channel when allocate buffer
                 Key: FLINK-27522
                 URL: https://issues.apache.org/jira/browse/FLINK-27522
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Checkpointing, Runtime / Network
    Affects Versions: 1.15.0, 1.14.0
            Reporter: fanrui
             Fix For: 1.16.0


This is first task of  [FLIP-227|https://cwiki.apache.org/confluence/display/FLINK/FLIP-227%3A+Support+overdraft+buffer]

The LocalBufferPool will be unavailable when the maxBuffersPerChannel is reached for this channel or availableMemorySegments.isEmpty.

If we request a memory segment from LocalBufferPool and the maxBuffersPerChannel is reached for this channel, we just ignore that and continue to allocate buffer while availableMemorySegments isn't empty in LocalBufferPool.

 



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