zhijiangW commented on a change in pull request #11507: [FLINK-16587] Add basic
CheckpointBarrierHandler for unaligned checkpoint
URL: https://github.com/apache/flink/pull/11507#discussion_r399072362
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/SingleInputGate.java
##########
@@ -245,6 +257,11 @@ void requestPartitions() throws IOException,
InterruptedException {
}
}
+ @Override
+ public void registerBufferReceivedListener(BufferReceivedListener
bufferReceivedListener) {
+ this.bufferReceivedListener =
checkNotNull(bufferReceivedListener);
Review comment:
Agree, we should check whether the current class field
`bufferReceivedListener` was already been set before.
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