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https://issues.apache.org/jira/browse/HBASE-4783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13150107#comment-13150107
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Nicolas Spiegelberg commented on HBASE-4783:
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This is necessary for the incremental snapshot feature that we are developing.
> Improve RowCounter to count rows in a specific key range.
> ---------------------------------------------------------
>
> Key: HBASE-4783
> URL: https://issues.apache.org/jira/browse/HBASE-4783
> Project: HBase
> Issue Type: Improvement
> Reporter: Nicolas Spiegelberg
> Priority: Trivial
>
> Currently RowCounter in MR package is a very simple map only job that does a
> full scan of a table. Enhance the utility to let the user specify a key range
> and count the number of rows in this range.
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