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Apache Spark commented on SPARK-21322: -------------------------------------- User 'cloud-fan' has created a pull request for this issue: https://github.com/apache/spark/pull/19952 > support histogram in filter cardinality estimation > -------------------------------------------------- > > Key: SPARK-21322 > URL: https://issues.apache.org/jira/browse/SPARK-21322 > Project: Spark > Issue Type: Sub-task > Components: SQL > Affects Versions: 2.3.0 > Reporter: Ron Hu > Assignee: Ron Hu > Fix For: 2.3.0 > > > Histogram is effective in dealing with skewed distribution. After we > generate histogram information for column statistics, we need to adjust > filter estimation based on histogram data structure. -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org