Tyler Hobbs created CASSANDRA-4573:
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             Summary: HSHA doesn't handle large messages gracefully
                 Key: CASSANDRA-4573
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4573
             Project: Cassandra
          Issue Type: Bug
          Components: Core
            Reporter: Tyler Hobbs
            Assignee: Vijay


HSHA doesn't seem to enforce any kind of max message length, and when messages 
are too large, it doesn't fail gracefully.

With debug logs enabled, you'll see this:

{{DEBUG 13:13:31,805 Unexpected state 16}}

Which seems to mean that there's a SelectionKey that's valid, but isn't ready 
for reading, writing, or accepting.

Client-side, you'll get this thrift error (while trying to read a frame as part 
of {{recv_batch_mutate}}):

{{TTransportException: TSocket read 0 bytes}}

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