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From "Robert Stupp (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-8971) Multiplexed storage protocol
Date Sun, 15 Mar 2015 10:53:38 GMT
Robert Stupp created CASSANDRA-8971:
---------------------------------------

             Summary: Multiplexed storage protocol
                 Key: CASSANDRA-8971
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8971
             Project: Cassandra
          Issue Type: Improvement
          Components: Core
            Reporter: Robert Stupp


The current storage protocol requires to (de)serialize the whole {{Verb}} once into a big
byte-buffer with the intention not to influence other concurrent requests. Just want to say
that removing the payload size doesn't eliminate the need to buffer the whole {{Verb}}.

Both streaming-result-set stuff (CASSANDRA-8483) and removing payload size (CASSANDRA-8100)
could benefit from a multiplexed storage protocol - comparable to the move from thrift to
native for the client side. Means: if we have streams on the storage protocol, we could easily
implement both without influencing other concurrent requests.

With CASSANDRA-8483 working from client via coordinator to replicas, a request could also
become more responsive - i.e. results that are available early can reach the client early.

Beside improving payload handling a multiplexed storage protocol would also reduce number
of threads and heap pressure required by temporary and possibly big buffers.



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