Nick Dimiduk created HBASE-13166:
------------------------------------
Summary: 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
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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
