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From "Konstantin Ryakhovskiy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-16108) RowCounter should support multiple key ranges
Date Thu, 30 Jun 2016 08:16:10 GMT

     [ https://issues.apache.org/jira/browse/HBASE-16108?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Konstantin Ryakhovskiy updated HBASE-16108:
    Attachment: HBASE-16108.master.003.patch

Ted, I have added test with 10k rows, and on my rig performance seems to be the same. But
10k is not actually a "large amount of rows", therefore, I think you are right and I left
old behaviour when one pair of keys is provided:
- when there is no rows, it sets FirstKeyOnlyFilter
- when there is one pair of start-end keys, it sets startRow/stopRow and FirstKeyOnlyFilter
- when there is more than one pair, it sets MultiRowRangeFilter
patch is attached

> 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
>            Assignee: Konstantin Ryakhovskiy
>         Attachments: HBASE-16108.master.001.patch, HBASE-16108.master.003.patch
> 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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