rkhachatryan commented on a change in pull request #14057: URL: https://github.com/apache/flink/pull/14057#discussion_r543678627
########## File path: flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/RemoteInputChannel.java ########## @@ -451,11 +451,17 @@ public void onBuffer(Buffer buffer, int sequenceNumber, int backlog) throws IOEx } else { receivedBuffers.add(sequenceBuffer); - channelStatePersister.maybePersist(buffer); if (dataType.requiresAnnouncement()) { firstPriorityEvent = addPriorityBuffer(announce(sequenceBuffer)); } } + channelStatePersister.checkForBarrier(sequenceBuffer.buffer).ifPresent(id -> { + // checkpoint was not yet started by task thread, + // so remember the numbers of buffers to spill for the time when it will be started + lastBarrierSequenceNumber = sequenceBuffer.sequenceNumber; + lastBarrierId = id; + }); + channelStatePersister.maybePersist(buffer); Review comment: I didn't add a unit test as after the other fixes in master (#14052) this change is not strictly necessary (though I think it's still less error-prone to not update SQN unnecessarily). ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org