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https://issues.apache.org/jira/browse/HIVE-478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12729787#action_12729787
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Adam Kramer commented on HIVE-478:
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Also, in case it was not obvious, the current system counts time going by while
mappers/reducers are "pending." This request would tell me how much time I
actually used, e.g., not include time spent waiting for mappers or reducers.
> Surface "processor time" for queries
> ------------------------------------
>
> 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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