Github user zhijiangW commented on a diff in the pull request:
https://github.com/apache/flink/pull/4533#discussion_r154710910
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/consumer/RemoteInputChannel.java
---
@@ -378,6 +381,11 @@ public void notifyBufferDestroyed() {
// Nothing to do actually.
}
+ @VisibleForTesting
+ public void increaseCredit(int credit) {
--- End diff --
We increase credit here only to confirm the `checkState` of credit
correctly during sending `AddCredit` message, not to trigger
`notifyCreditAvailable` by increasing credit.
---
