Nico Kruber created FLINK-10142:
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Summary: Reduce synchronization overhead for credit notifications
Key: FLINK-10142
URL: https://issues.apache.org/jira/browse/FLINK-10142
Project: Flink
Issue Type: Bug
Components: Network
Affects Versions: 1.6.0, 1.5.2, 1.7.0
Reporter: Nico Kruber
Assignee: Nico Kruber
When credit-based flow control was introduced, we also added some checks and
optimisations for uncommon code paths that make common code paths unnecessarily
more expensive, e.g. checking whether a channel was released before forwarding
a credit notification to Netty. Such checks would have to be confirmed by the
Netty thread anyway and thus only add additional load for something that
happens only once (per channel).
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