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From "Stu Hood (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1315) ColumnFamilyOutputFormat should use client API objects
Date Fri, 13 Aug 2010 22:24:16 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12898444#action_12898444
] 

Stu Hood commented on CASSANDRA-1315:
-------------------------------------

> other than the codegen step?
Just the codegen step. If you don't have root access to your cluster for instance, you would
need to JAR the Thrift generated code and then use a relative import to pull it in.

If the real question we're debating is whether we are still considering switching Cassandra
100% to Avro before 1.0, then we should probably discuss that elsewhere. When I began this
ticket, I was under the impression that that was a sure thing.

> ColumnFamilyOutputFormat should use client API objects
> ------------------------------------------------------
>
>                 Key: CASSANDRA-1315
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1315
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>            Reporter: Stu Hood
>            Assignee: Stu Hood
>             Fix For: 0.7 beta 2
>
>         Attachments: 0001-Use-Avro-objects-as-input-to-CFOutputFormat.patch, 0002-Allow-multiple-mutations-per-key-to-arrive-during-in.patch
>
>
> ColumnFamilyOutputFormat currently takes IColumns as its input, meaning that users need
to understand Cassandra's internals reasonably well in order to use it, and need to hardcode
things like the comparator type and clock type into their MapReduce jobs.
> Instead, CFOutputFormat should take either Thrift or Avro objects, which are familiar
interfaces for users.

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