dawidwys commented on a change in pull request #17440:
URL: https://github.com/apache/flink/pull/17440#discussion_r732625408
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/netty/NettyPartitionRequestClient.java
##########
@@ -195,22 +195,26 @@ public void operationComplete(ChannelFuture future)
throws Exception {
@Override
public void notifyCreditAvailable(RemoteInputChannel inputChannel) {
- clientHandler.notifyCreditAvailable(inputChannel);
+ sendToChannel(new AddCreditMessage(inputChannel));
}
@Override
public void notifyNewBufferSize(RemoteInputChannel inputChannel, int
bufferSize) {
- clientHandler.notifyNewBufferSize(inputChannel, bufferSize);
+ sendToChannel(new NewBufferSizeMessage(inputChannel, bufferSize));
}
@Override
public void resumeConsumption(RemoteInputChannel inputChannel) {
- clientHandler.resumeConsumption(inputChannel);
+ sendToChannel(new ResumeConsumptionMessage(inputChannel));
}
@Override
public void acknowledgeAllRecordsProcessed(RemoteInputChannel
inputChannel) {
- clientHandler.acknowledgeAllRecordsProcessed(inputChannel);
+ sendToChannel(new AcknowledgeAllRecordsProcessedMessage(inputChannel));
+ }
+
+ private void sendToChannel(ClientOutboundMessage message) {
+ tcpChannel.eventLoop().execute(() ->
tcpChannel.pipeline().fireUserEventTriggered(message));
Review comment:
I am fine merging it as is. However, I am curious myself if it was/is
necessary (I could not find an answer, but I have not searched for long). But,
I am not too familiar with how netty works.
BTW, I've just looked into it again and if I go into:
`ChannelPipeline#fireUserEventTriggered` ->
`DefaultPipeline#fireUserEventTriggered` ->
`AbstractChannelHandlerContext.invokeUserEventTriggered(this.head, event);` I
can see a code like this:
```
static void invokeUserEventTriggered(final AbstractChannelHandlerContext
next, final Object event) {
ObjectUtil.checkNotNull(event, "event");
EventExecutor executor = next.executor();
if (executor.inEventLoop()) {
next.invokeUserEventTriggered(event);
} else {
executor.execute(new Runnable() {
public void run() {
next.invokeUserEventTriggered(event);
}
});
}
}
```
which would indicate submitting it explicitly from the `eventLoop` is
unnecessary.
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