[jira] [Created] (FLINK-24035) Notify the buffer listeners when the local buffer pool receives available notification from the global pool

["Yingjie Cao (Jira)" <ji...@apache.org>]

Yingjie Cao created FLINK-24035:
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             Summary: Notify the buffer listeners when the local buffer pool receives available notification from the global pool
                 Key: FLINK-24035
                 URL: https://issues.apache.org/jira/browse/FLINK-24035
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Network
    Affects Versions: 1.14.0
            Reporter: Yingjie Cao
             Fix For: 1.14.0


The buffer listeners are not notified when the the local buffer pool receives available notification from the global pool. This may cause potential deadlock issue:
 # A LocalBufferPool is created, but there is no available buffers in the global NetworkBufferPool.
 # The LocalBufferPool registers an available buffer listener to the global NetworkBufferPool.
 # The BufferManager requests buffers from the LocalBufferPool but no buffer is available. As a result, it registers an available buffer listener to the LocalBufferPool.
 # A buffer is recycled to the global pool and the local buffer pool is notified about the available buffer.
 # The local buffer pool requests the available buffer from the global pool but the registered available buffer listener of BufferManager is not notified and it can never get a chance to be notified so deadlock occurs.



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