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https://issues.apache.org/jira/browse/HBASE-559?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12589234#action_12589234
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stack commented on HBASE-559:
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I'll move RowCounter under examples when we have more than just one (Takes a
bit of work setting up an example jar, etc.). Also, this patch makes it so
hbase.jar can be used as a job jar on a MR cluster. Chose which job you want
to run by passing switch to Driver class. This facility doesn't belong in
examples (but I need something to demo it with.... ).
In Driver.main, yeah, each new MR job is added here to the Driver class.
In RowCounter.main, I'll change it so its args[0] instead (This 'main' is not
used generally).
Thanks for the review.
> MR example job to count table rows
> ----------------------------------
>
> Key: HBASE-559
> URL: https://issues.apache.org/jira/browse/HBASE-559
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Assignee: stack
> Priority: Blocker
> Fix For: 0.1.2
>
> Attachments: 559-0.1-v2.patch, 559.patch
>
>
> The Lars' import is a little messy; he's not sure how many records were
> imported. Running a select takes a couple of hours. He happens to have an
> idle MR cluster standing by. An example MR job that just did a count of
> records would be generally useful. Could even output row keys so you'd have
> a list of what made it in. Later, if this tool becomes popular with
> derivatives and similiars, we can bundle a jar of MR jobs to run against your
> tables that can answer common queries and that are amenable to
> subclassing/modification.
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