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Posted to issues@spark.apache.org by "Zhenhua Wang (JIRA)" <ji...@apache.org> on 2016/08/18 11:56:20 UTC
[jira] [Updated] (SPARK-17129) support partition-level stats and
cardinality estimation
[ https://issues.apache.org/jira/browse/SPARK-17129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Zhenhua Wang updated SPARK-17129:
---------------------------------
Description:
We need to support generation/storing/loading partition-level statistics,
and use stats from single/multiple partitions (after partition pruning) to estimate cardinality.
was:need to support generation/storing/loading partition-level statistics, and use stats from single/multiple partitions (after partition pruning) to estimate cardinality
> support partition-level stats and cardinality estimation
> --------------------------------------------------------
>
> 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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