yunfengzhou-hub commented on code in PR #20275:
URL: https://github.com/apache/flink/pull/20275#discussion_r931932142
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flink-runtime/src/main/java/org/apache/flink/runtime/operators/coordination/OperatorCoordinatorHolder.java:
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@@ -229,6 +233,7 @@ public void checkpointCoordinator(long checkpointId,
CompletableFuture<byte[]> r
// checkpoint coordinator time thread.
// we can remove the delegation once the checkpoint coordinator runs
fully in the
// scheduler's main thread executor
+
Preconditions.checkState(!context.isConcurrentExecutionAttemptsSupported());
Review Comment:
According to our offline discussion, I'll remove this check as well.
`subtaskGatewayMap` would only be used without concurrent executions enabled,
and it still manages one gateway for each subtask.
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