AHeise 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_r406475213
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/RemoteInputChannel.java
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@@ -542,6 +573,16 @@ public void onBuffer(Buffer buffer, int sequenceNumber,
int backlog) throws IOEx
if (backlog >= 0) {
onSenderBacklog(backlog);
}
+
+ if (checkpointBarrier != null) {
+ receivedCheckpointId =
checkpointBarrier.getId();
+ }
+ if (checkpointBarrier != null &&
inputGate.bufferReceivedListener != null) {
+
inputGate.bufferReceivedListener.notifyBarrierReceived(checkpointBarrier,
channelInfo);
+ }
+ if (notifyReceivedBuffer != null &&
inputGate.bufferReceivedListener != null) {
Review comment:
That's a tricky one. `receivedCheckpointId < lastRequestedCheckpointId` can
only be true if the checkpoint has been triggered through `Unaligner`, which in
turn guarantees that `bufferReceivedListener != null`.
Aside from your suggestions, we could also add this assumption to the place,
where we create `notifyReceivedBuffer` to make it more explicit. (So don't
retain if `bufferReceivedListener == null`). Then we would just trust branch
prediction to effectively get rid of the check.
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