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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-153) Implement TABLESAMPLE clause
Date Sat, 24 Jun 2017 21:33:00 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16062143#comment-16062143
] 

Lars Hofhansl commented on PHOENIX-153:
---------------------------------------

Good idea. Skipping whole guideposts is pretty coarse, though.
At the same time I cannot thing of anything else efficient.

> Implement TABLESAMPLE clause
> ----------------------------
>
>                 Key: PHOENIX-153
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-153
>             Project: Phoenix
>          Issue Type: Task
>            Reporter: James Taylor
>            Assignee: Ethan Wang
>              Labels: enhancement
>
> Support the standard SQL TABLESAMPLE clause by implementing a filter that uses a skip
next hint based on the region boundaries of the table to only return n rows per region.



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