[
https://issues.apache.org/jira/browse/HIVE-2206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yin Huai updated HIVE-2206:
---------------------------
Attachment: Queries
Two queries (TPC-H Q17 and TPC-H Q18) can be used for testing this optimizer.
Q17 is the same with the query provided in
https://issues.apache.org/jira/browse/HIVE-600, but to expose the correlation,
Q18 is modified. With this optimizer, Q17 and Q18 needs 2 and 4 MapReduce jobs,
respectively. Without this optimizer, these two queries need 4 and 8 MapReduce
jobs, respectively.
> add a new optimizer for query correlation discovery and optimization
> --------------------------------------------------------------------
>
> Key: HIVE-2206
> URL: https://issues.apache.org/jira/browse/HIVE-2206
> Project: Hive
> Issue Type: New Feature
> Reporter: He Yongqiang
> Attachments: Queries, YSmartPatchForHive.patch
>
>
> reference:
> http://www.cse.ohio-state.edu/hpcs/WWW/HTML/publications/papers/TR-11-7.pdf
--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira
