GoogleCloudPlatform / google-cloud-java / 3990

72%

Pull #2113

travis-ci

pubsub: eventually stop polling after termination

Update #2103.

This does not completely fix the problem.
If an RPC is started before the shutdown, the RPC won't be canceled.
Depending on how the channels and executors are set up,
messages in the said RPCs might be lease-extended.

With this PR, at least we're not polling forever anymore.

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