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https://issues.apache.org/jira/browse/HIVE-1509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12895106#action_12895106
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Namit Jain commented on HIVE-1509:
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With dynamic partitions, the number of intermediate files can grow very fast.
For example, consider a query with 10,000 mappers and 100 files per mapper - it
can create up to 1 million files before merging them at the end.
The cluster may be down by the time the query finishes.
It is a good idea to track the number of files through a counter, and kill the
query if the number exceeds a given threshold
> Monitor the working set of the number of files
> -----------------------------------------------
>
> Key: HIVE-1509
> URL: https://issues.apache.org/jira/browse/HIVE-1509
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.7.0
> Reporter: Namit Jain
> Assignee: Ning Zhang
>
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