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Posted to issues@spark.apache.org by "Zhenhua Wang (JIRA)" <ji...@apache.org> on 2016/08/18 11:54:21 UTC

[jira] [Created] (SPARK-17129) support partition-level stats and cardinality estimation

Zhenhua Wang created SPARK-17129:
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             Summary: 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


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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