zhijiangW commented on a change in pull request #11351: [FLINK-16404][runtime]
Solve the potential deadlock problem when reducing exclusive buffers to zero
URL: https://github.com/apache/flink/pull/11351#discussion_r397050537
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File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/buffer/BufferConsumer.java
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@@ -44,6 +44,8 @@
private int currentReaderPosition;
+ private final boolean isExactlyOnceBarrier;
Review comment:
It seems a bit strange to see this field in `BufferConsumer`.
After discussing offline, we introduce another enum type for identifying the
specific `AbstractEvent` instance inside `Buffer` without deserialization. Then
the required components can judge the type from buffer to make some
improvements. At the beginning we only focus on `CheckpointBarrier` event and
make others unknown.
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