wsry 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_r404584539
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/PipelinedSubpartition.java
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@@ -302,7 +307,7 @@ public int unsynchronizedGetNumberOfQueuedBuffers() {
public void flush() {
final boolean notifyDataAvailable;
synchronized (buffers) {
- if (buffers.isEmpty()) {
+ if (buffers.isEmpty() || readView == null ||
readView.isBlockedByCheckpoint()) {
Review comment:
Some tags should be checked in lock, I removed the check in
notifyDataAvailable.
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