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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