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From "Stefania (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-11274) cqlsh: interpret CQL type for formatting blob types
Date Fri, 11 Mar 2016 00:26:18 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-11274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15190226#comment-15190226
] 

Stefania commented on CASSANDRA-11274:
--------------------------------------

Trunk only. 

CASSANDRA-11053 delivers a performance fix and to do so it uses a shortcut in the driver that
makes these formatting changes not necessary even when cqlsh uses a cythonized driver. The
changes delivered by this patch decouple cqlsh formatting from the driver deserializers, and
therefore, whilst it's good to have them in the long term, there is no need to have them in
older versions. This patch should be considered as a new feature or improvement.

> cqlsh: interpret CQL type for formatting blob types
> ---------------------------------------------------
>
>                 Key: CASSANDRA-11274
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11274
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Tools
>            Reporter: Stefania
>            Assignee: Stefania
>             Fix For: 3.x
>
>
> During the development of CASSANDRA-11053 we have added changes to the cqlsh formatting
code so that we can format {{blob}} types correctly even if they are represented as {{str}}
rather than {{bytearray}}.
> At the moment we ensure {{blob}} are of type {{bytearray}} via the following shortcut:
> {code}
> cassandra.cqltypes.BytesType.deserialize = staticmethod(lambda byts, protocol_version:
bytearray(byts))
> {code}
> After CASSANDRA-11053 is committed there will be a similar shortcut to override the fast
serializers implemented in cython. 
> Decoding the CQL type is safer in that it decouples cqlsh formatting from the types returned
by the driver deserializers but it is also unnecessary for CASSANDRA-11053 performance goals
and risky for older releases. 
> Therefore this ticket delivers this functionality but only on trunk.



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