XComp commented on code in PR #23296:
URL: https://github.com/apache/flink/pull/23296#discussion_r1308291020
##########
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/operators/collect/CollectSinkOperatorCoordinator.java:
##########
@@ -152,9 +176,11 @@ private CoordinationResponse handleRequestImpl(
throw new NullPointerException("No sinkAddress available.");
}
- if (socketConnection == null) {
- socketConnection = SocketConnection.create(socketTimeout,
sinkAddress);
- LOG.info("Sink connection established");
+ synchronized (connectionLock) {
Review Comment:
I didn't consider this one because of the [findings
below](https://github.com/apache/flink/pull/23296#discussion_r1307474170)
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