Ryan Blue created SPARK-23889: --------------------------------- Summary: Add interfaces to pass required sorting and clustering for writes Key: SPARK-23889 URL: https://issues.apache.org/jira/browse/SPARK-23889 Project: Spark Issue Type: Sub-task Components: SQL Affects Versions: 2.3.0 Reporter: Ryan Blue
>From a [discussion on the dev >list|https://lists.apache.org/thread.html/d8bb72fc9b4be8acc3f49367bfc99cbf029194a58333eba69df49717@%3Cdev.spark.apache.org%3E], > there is consensus around adding interfaces to pass required sorting and >clustering to Spark. The proposal is to add: {code:java} interface RequiresClustering { Set<Expression> requiredClustering(); } interface RequiresSort { List<SortOrder> requiredOrdering(); } {code} When only {{RequiresSort}} is present, the sort would produce a global sort. The partitioning introduced by that sort would be overridden by {{RequiresClustering}}, making the sort local to each partition. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org