wsry commented on a change in pull request #13924:
URL: https://github.com/apache/flink/pull/13924#discussion_r601057131
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/SortMergeSubpartitionReader.java
##########
@@ -176,21 +202,28 @@ public void resumeConsumption() {
@Override
public Throwable getFailureCause() {
- // we can never throw an error after this was created
- return null;
+ synchronized (lock) {
+ return failureCause;
+ }
}
@Override
public boolean isAvailable(int numCreditsAvailable) {
- if (numCreditsAvailable > 0) {
- return !buffersRead.isEmpty();
- }
+ synchronized (lock) {
+ if (isReleased) {
+ return true;
+ }
- return !buffersRead.isEmpty() && !buffersRead.peek().isBuffer();
+ if (numCreditsAvailable > 0) {
+ return !buffersRead.isEmpty();
+ }
+
+ return !buffersRead.isEmpty() && !buffersRead.peek().isBuffer();
+ }
}
@Override
public int unsynchronizedGetNumberOfQueuedBuffers() {
Review comment:
This method is only for metric. I agree we should add some java doc to
methods of ResultSubpartitionView. But that is out of the scope of this PR.
Maybe we can do the improvement in another PR in the future.
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