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From "Cyril Scetbon (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-4131) Integrate Hive support to be in core cassandra
Date Wed, 04 Sep 2013 16:22:54 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-4131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13757919#comment-13757919
] 

Cyril Scetbon commented on CASSANDRA-4131:
------------------------------------------

I dig into the code and it comes from the fact that in class org.apache.hadoop.hive.cassandra.input.cql.CqlHiveRecordReader,
createKey() function returns a MapWritable object whereas in class org.apache.hadoop.hive.ql.exec.FetchOperator,
function getRecordReader() tries to get the key with the following code
{code}key = currRecReader.createKey();{code} But key is defined as a WritableComparable and
so can't store a MapWritable object returned by CqlHiveRecordReader.createKey() function
Tell me if I'm wrong or if you have some patches to apply
                
> Integrate Hive support to be in core cassandra
> ----------------------------------------------
>
>                 Key: CASSANDRA-4131
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4131
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Jeremy Hanna
>            Assignee: Edward Capriolo
>              Labels: hadoop, hive
>
> The standalone hive support (at https://github.com/riptano/hive) would be great to have
in-tree so that people don't have to go out to github to download it and wonder if it's a
left-for-dead external shim.

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