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https://issues.apache.org/jira/browse/HBASE-16108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15354735#comment-15354735
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Konstantin Ryakhovskiy commented on HBASE-16108:
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Should it be applied to both: mapred.RowCounter as well as mapreduce.RowCounter?
> RowCounter should support multiple key ranges
> ---------------------------------------------
>
> Key: HBASE-16108
> URL: https://issues.apache.org/jira/browse/HBASE-16108
> Project: HBase
> Issue Type: Improvement
> Reporter: Geoffrey Jacoby
>
> Currently, RowCounter only allows a single key range to be used as a filter.
> It would be useful in some cases to be able to specify multiple key ranges
> (or prefixes) in the same job. (For example, counting over a set of Phoenix
> tenant ids in an unsalted table)
> This could be done by enhancing the existing key range parameter to take
> multiple start/stop row pairs. Alternately, a new --row-prefixes option could
> be added, similar to what HBASE-15847 did for VerifyReplication.
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