Sxnan commented on code in PR #23521:
URL: https://github.com/apache/flink/pull/23521#discussion_r1366607532
##########
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/graph/StreamGraphGenerator.java:
##########
@@ -415,6 +417,12 @@ private void configureStreamGraphStreaming(final
StreamGraph graph) {
graph.setCheckpointStorage(checkpointStorage);
graph.setSavepointDirectory(savepointDir);
graph.setGlobalStreamExchangeMode(deriveGlobalStreamExchangeModeStreaming());
+
+ if (Duration.ZERO.equals(
+ configuration.get(
+
ExecutionCheckpointingOptions.CHECKPOINTING_INTERVAL_DURING_BACKLOG))) {
+
graph.setTimerServiceProvider(InternalBacklogAwareTimerServiceManagerImpl::create);
+ }
Review Comment:
Before this PR, if it is not set, it will use the
`InternalTimeServiceManagerImpl::create` as the timerSerivceProvider, see
`org.apache.flink.streaming.api.operators.InternalTimeServiceManagerImpl#705`
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