fujian created CASSANDRA-11082:
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Summary: netty's level hadn't prevent OOM when receiver handle
slow.
Key: CASSANDRA-11082
URL: https://issues.apache.org/jira/browse/CASSANDRA-11082
Project: Cassandra
Issue Type: Bug
Components: Streaming and Messaging
Reporter: fujian
Priority: Critical
as we know, netty will OOM when received client is slow.
due to if receiver can't handle response fast so that cassandra server can't
flush data. it will cause channeloutbuffer with big size.
we see the cassandra had configure write high/low water level, but I can't
found any code to judge iswritable. so it will have possible OOM
why cassandra hadn't handle this case?
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