zhijiangW commented on a change in pull request #11877:
URL: https://github.com/apache/flink/pull/11877#discussion_r422466188
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/RemoteInputChannel.java
##########
@@ -428,6 +423,23 @@ public void notifyBufferDestroyed() {
// Nothing to do actually.
}
+ @Override
+ public void onCheckpointBarrier(CheckpointBarrier barrier) {
Review comment:
Make the following condition out of `synchronized` part, then we do not
need to touch the lock for most of the cases.
```
CheckpointOptions options = barrier.getCheckpointOptions();
if (!(initialCredit == 0 && options.isExactlyOnceMode() &&
!options.isUnalignedCheckpoint())) {
return;
}
```
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