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From "Esteve Fernandez (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-241) move daemon to framed transport (thrift)
Date Fri, 13 Nov 2009 18:19:39 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-241?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12777596#action_12777596
] 

Esteve Fernandez commented on CASSANDRA-241:
--------------------------------------------

THRIFT-210 is fixed as of rev 835006. As for THRIFT-538, I think nobody is working on it,
the Cocoa, Haskell, Ocaml and Smalltalk ports are not actively maintained, AFAIK.

> move daemon to framed transport (thrift)
> ----------------------------------------
>
>                 Key: CASSANDRA-241
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-241
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.4
>            Reporter: Eric Evans
>            Assignee: Eric Evans
>             Fix For: 0.4
>
>         Attachments: 241.txt, v1-0001-CASSANDRA-241-optional-support-for-framed-transport.txt,
v2-0001-CASSANDRA-241-optional-support-for-framed-transport.txt
>
>
> The framed transports in thrift wrap the underlying transport to prepend the message
size as a 4 byte value.  There are purported benefits to buffering, but the main purpose of
these wrappers is to allow non-blocking servers to perform reads without deserialization.
Of course, if the server transport is framed, the client's must be as well, and vice versa,
(framed and non-framed transports are incompatible). 
> CassandraDaemon is currently a threaded server with the default transport, I believe
we should change it to being framed, for compatibility with non-blocking clients (this actually
came up during an attempt to use a Twisted client).
> This will break all existing client apps, (even if fixing them is trivial).

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