[jira] [Commented] (CASSANDRA-9894) Serialize the header only once per message

["Sylvain Lebresne (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-9894?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14640555#comment-14640555 ] 

Sylvain Lebresne commented on CASSANDRA-9894:
---------------------------------------------

For info, I had started on that but haven't found the time to finish yet. My starting point is [here|https://github.com/pcmanus/cassandra/commits/9894] in case anyone wants to get a better idea of what I mean, or want to continue from that start. The branch is not complete however, it's not even compiling yet.

> Serialize the header only once per message
> ------------------------------------------
>
>                 Key: CASSANDRA-9894
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9894
>             Project: Cassandra
>          Issue Type: Sub-task
>          Components: Core
>            Reporter: Sylvain Lebresne
>             Fix For: 3.0 beta 1
>
>
> One last improvement I'd like to do on the serialization side is that we currently serialize the {{SerializationHeader}} for each partition. That header contains the serialized columns in particular and for range queries, serializing that for every partition is wasted (note that it's only a problem for the messaging protocol as for sstable we only write the header once per sstable).



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