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Posted to issues@spark.apache.org by "holdenk (JIRA)" <ji...@apache.org> on 2015/12/07 21:37:10 UTC
[jira] [Commented] (SPARK-12185) Add Histogram support to Spark
SQL/DataFrames
[ https://issues.apache.org/jira/browse/SPARK-12185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15045665#comment-15045665 ]
holdenk commented on SPARK-12185:
---------------------------------
Possibly related too https://issues.apache.org/jira/browse/SPARK-10785 (if could do exact rather than sampling for finding the splits and switch to multi-column) I think it would serve this purpose well.
> Add Histogram support to Spark SQL/DataFrames
> ---------------------------------------------
>
> Key: SPARK-12185
> URL: https://issues.apache.org/jira/browse/SPARK-12185
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: holdenk
> Priority: Minor
>
> While we have the ability to compute histograms on RDDs of Doubles it would be good to also directly support histograms in Spark SQL (see https://cwiki.apache.org/confluence/display/Hive/StatisticsAndDataMining#StatisticsAndDataMining-histogram_numeric():Estimatingfrequencydistributions ).
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