[jira] [Created] (FLINK-16365) awaitTermination() result is not checked

[Shang Yuanchun (Jira)]

Roman Leventov created FLINK-16365:
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             Summary: awaitTermination() result is not checked
                 Key: FLINK-16365
                 URL: https://issues.apache.org/jira/browse/FLINK-16365
             Project: Flink
          Issue Type: Improvement
            Reporter: Roman Leventov


There are three places in production code where awaitTermination() result is not checked: BlockingGrpcPubSubSubscriber (io.grpc.ManagedChannel), PubSubSink (ManagedChannel), and FileCache (ExecutorService).

Calling awaitTermination() without checking the result seems to make little sense to me.

If it's genuinely important to await termination, e. g. for concurrency reasons, or because we are awaiting heavy resource release and if the resource is not released we have a resource leak, then it seems reasonable to at least check the result of awaitTermination() and log a warning if the result is negative, allowing to debug potential problem in the future.

Otherwise, if we don't really care about awaiting termination, then maybe it's better to not call awaitTermination() at all.



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