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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1315) ColumnFamilyOutputFormat should use client API objects
Date Thu, 12 Aug 2010 19:09:16 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12897896#action_12897896
] 

Jonathan Ellis commented on CASSANDRA-1315:
-------------------------------------------

committed 0001

looks like 0002 brace placement is wrong, seems that the mutationsByKey.put(key, cfMutation)
should happen if cfMutation != null as well.  similarly for the step below that.

> 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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