[jira] [Commented] (CASSANDRA-5790) CqlStorage Pig partition push down support

["Alex Liu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-5790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13775692#comment-13775692 ] 

Alex Liu commented on CASSANDRA-5790:
-------------------------------------

Since the pushdown needs the schema change from (name, value) tuple to value

{code}
  schema: (value, value, value) where keys are in the front. Each has its name in the column schema
{code}

Doesn't anyone needs backward compatible which will block filter push down?

The new schema is much concise than the old one, and It still keeps the column name in the column schema.

CASSANDRA-6085 is created for users to vote for it.

                
> CqlStorage Pig partition push down support
> ------------------------------------------
>
>                 Key: CASSANDRA-5790
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5790
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Hadoop
>    Affects Versions: 1.2.6
>            Reporter: Alex Liu
>            Assignee: Alex Liu
>             Fix For: 1.2.8
>
>         Attachments: 5790-1.2-branch.txt
>
>
> CASSANDRA-5234 provides support for cql3 tables by using CqlStorage. It doesn't provide the Pig partition filter push down support. This ticket improves the code to support the partition filter push down for CqlStorage.

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