Surface "processor time" for queries
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Key: HIVE-478
URL: https://issues.apache.org/jira/browse/HIVE-478
Project: Hadoop Hive
Issue Type: Wish
Components: Logging, Query Processor
Reporter: Adam Kramer
We currently list real-time metrics of how long queries take--"finished in:
1min 13sec" appears on the job tracker. However, this is affected by a lot more
than just the quality or implementation of the query. For example, number of
mappers used varies a lot when you use subqueries versus single-query
aggregation, as does the amount of work necessary.
For implementation comparisons (e.g., "should I use this version of the query
or that one"), ti would be great to know the processor time used instead of the
real time used...both in terms of "mapper cpu seconds" and "reducer cpu
seconds."
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