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From "Zhenhua Wang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-17129) Support statistics collection and cardinality estimation for partitioned tables
Date Tue, 13 Jun 2017 20:58:00 GMT

     [ https://issues.apache.org/jira/browse/SPARK-17129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zhenhua Wang updated SPARK-17129:
---------------------------------
    Summary: Support statistics collection and cardinality estimation for partitioned tables
 (was: support partition-level stats and cardinality estimation)

> Support statistics collection and cardinality estimation for partitioned tables
> -------------------------------------------------------------------------------
>
>                 Key: SPARK-17129
>                 URL: https://issues.apache.org/jira/browse/SPARK-17129
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Zhenhua Wang
>
> We need to support generation/storing/loading partition-level statistics, 
> and use stats from single/multiple partitions (after partition pruning) to estimate cardinality.



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