[jira] Commented: (CASSANDRA-1047) Get hadoop ColumnFamily metadata from describe_keyspace instead of config file

["Jeremy Hanna (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-1047?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12877207#action_12877207 ] 

Jeremy Hanna commented on CASSANDRA-1047:
-----------------------------------------

I've got the seed host and rpc port into the ConfigHelper.  I can also get certain keyspace information from describe_keyspace for what's needed in ColumnFamilyInputFormat.

However, there are two other things that may require some more configuration - ColumnFamilyInputFormat also needs the Authenticator and the Paritioner.  I'll try to mock those in the ConfigHelper as well and see where it gets me.

> Get hadoop ColumnFamily metadata from describe_keyspace instead of config file
> ------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-1047
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1047
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Hadoop
>            Reporter: Jonathan Ellis
>            Assignee: Jeremy Hanna
>             Fix For: 0.7
>
>
> Requiring the Hadoop job to contain a copy of the Cassandra configuration file is clunky and error-prone.  Instead, the Hadoop job should get an IP and port to contact for the range map and for CF metadata (with describe_keyspace).

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