[
https://issues.apache.org/jira/browse/HIVE-2206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yin Huai updated HIVE-2206:
---------------------------
Release Note: This optimizer exploits the intra-query correlations and
merge multiple correlated MapReduce jobs into one jobs. The patch is generated
based on hive-trunk with revision 1171917.
Status: Patch Available (was: In Progress)
In unit tests, there are four failures in TestParse (groupby1, groupby2,
groupby3 and groupby5). These four failures are caused by changes I made in the
method "genGroupByPlanReduceSinkOperator" in the class "SemanticAnalyzer".
Current results should be updated. But I am not sure how to change the correct
results. Need some suggestions. Thanks.
> 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
> Assignee: Yin Huai
> Attachments: HIVE-2206.1.patch.txt, HIVE-2206.2.patch.txt,
> HIVE-2206.3.patch.txt, Queries, YSmartPatchForHive.patch, testQueries.q
>
>
> 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
