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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6538) Provide a read-time CQL function to display the data size of columns and rows
Date Fri, 20 Feb 2015 13:24:12 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14328900#comment-14328900
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Sylvain Lebresne commented on CASSANDRA-6538:
---------------------------------------------

bq. we will have to check the datatype of providedArgs against BytesType

Well, no. As long as {{BytesType}} is declared as the type of argument, the type system ensure
it will only be called on that. Really, what I'm suggesting is simply that you remove the
change to {{Selection}} from your patch. Actually, that and the fact that you shouldn't use
{{bb.array().length}} (as this return the length of the array backing the ByteBuffer but 1)
that's *not* in general the same as the length of the ByteBuffer and 2) it's assuming that
the ByteBuffer is backed by an array which is not an assumption it should make). Instead,
just use {{ByteBuffer.remaining()}}.

> Provide a read-time CQL function to display the data size of columns and rows
> -----------------------------------------------------------------------------
>
>                 Key: CASSANDRA-6538
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6538
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Johnny Miller
>            Priority: Minor
>              Labels: cql
>         Attachments: 6538.patch, CodeSnippet.txt, sizeFzt.PNG
>
>
> It would be extremely useful to be able to work out the size of rows and columns via
CQL. 



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