Github user NicoK commented on a diff in the pull request:
https://github.com/apache/flink/pull/4533#discussion_r154697358
--- 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 --
or how about recycling a `Buffer` instance into the channel via
`RemoteInputChannel#recycle()? That would also be part of the current
interface and yield the same result but is a bit more hacky (but similar to
calling `onSenderBacklog` with the advantage being closer to your
`increaseCredit` method).
---
