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https://issues.apache.org/jira/browse/PHOENIX-153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15806135#comment-15806135
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James Taylor commented on PHOENIX-153:
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Another potential means of doing sampling (as pointed out by [~lhofhansl]) is
when a table is salted. Given that a salt is limited to a single byte, this may
not work that well. However, if multiple bytes could be specified
(PHOENIX-3574), that would be a good option.
> Implement TABLESAMPLE clause
> ----------------------------
>
> Key: PHOENIX-153
> URL: https://issues.apache.org/jira/browse/PHOENIX-153
> Project: Phoenix
> Issue Type: Task
> Reporter: James Taylor
> 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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