shanizta siddiqua created CASSANDRA-21268:
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Summary: CEP-59: Four-phase shutdown with cleanup() self-drain
and gracePeriodElapsed()
Key: CASSANDRA-21268
URL: https://issues.apache.org/jira/browse/CASSANDRA-21268
Project: Apache Cassandra
Issue Type: Sub-task
Components: Messaging/Client
Reporter: shanizta siddiqua
Assignee: shanizta siddiqua
Replace the current poll-and-kill shutdown with a
four-phase flow: SEAL (close bind channel, isRunning=false),
SIGNAL (send event via ConnectionTracker.send()), DRAIN
(self-drain via existing cleanup() callback in CQLMessageHandler),
DEADLINE (force-close stragglers). The drain check: if
(!isRunning && channelPayloadBytesInFlight == 0 &&
gracePeriodElapsed()) channel.close(); The gracePeriodElapsed()
condition prevents premature close of connections with
network-latent requests still in the TCP pipe.
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