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https://issues.apache.org/jira/browse/HBASE-13166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-13166:
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Assignee: Usha Kuchibhotla
> Review MR counters
> ------------------
>
> Key: HBASE-13166
> URL: https://issues.apache.org/jira/browse/HBASE-13166
> Project: HBase
> Issue Type: Task
> Components: mapreduce
> Affects Versions: 0.98.4
> Reporter: Nick Dimiduk
> Assignee: Usha Kuchibhotla
> Labels: beginner
>
> I was diagnosing a slow CopyTable job recently. It seems we're not exposing
> through hadoop counters as many statistics as we might. For example, HDFS
> gives things like bytes read, we apparently do not. This task is to review
> the counters exposed -- assume you don't have access to debug logs to
> understand what happened -- and ensure our coverage on the key points. This
> particular job appears to be moving data between two tables, both of which
> have poorly distributed region splits.
> Perhaps there's follow-on to make things work better with uneven region
> sizes, leveraging some of the region size goodness added in HBASE-10413.
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