Xiangrui Meng created SPARK-17641: ------------------------------------- Summary: collect_set should ignore null values Key: SPARK-17641 URL: https://issues.apache.org/jira/browse/SPARK-17641 Project: Spark Issue Type: Bug Components: SQL Affects Versions: 2.0.0 Reporter: Xiangrui Meng
`collect_set` throws the following exception when there are null values. It should ignore null values to be consistent with other aggregation methods. {code} java.lang.IllegalArgumentException: Flat hash tables cannot contain null elements. at scala.collection.mutable.FlatHashTable$HashUtils$class.elemHashCode(FlatHashTable.scala:390) at scala.collection.mutable.HashSet.elemHashCode(HashSet.scala:41) at scala.collection.mutable.FlatHashTable$class.addEntry(FlatHashTable.scala:136) at scala.collection.mutable.HashSet.addEntry(HashSet.scala:41) at scala.collection.mutable.HashSet.$plus$eq(HashSet.scala:60) at scala.collection.mutable.HashSet.$plus$eq(HashSet.scala:41) at org.apache.spark.sql.catalyst.expressions.aggregate.Collect.update(collect.scala:64) at org.apache.spark.sql.execution.aggregate.AggregationIterator$$anonfun$1$$anonfun$applyOrElse$1.apply(AggregationIterator.scala:170) at org.apache.spark.sql.execution.aggregate.AggregationIterator$$anonfun$1$$anonfun$applyOrElse$1.apply(AggregationIterator.scala:170) at org.apache.spark.sql.execution.aggregate.AggregationIterator$$anonfun$generateProcessRow$1.apply(AggregationIterator.scala:186) at org.apache.spark.sql.execution.aggregate.AggregationIterator$$anonfun$generateProcessRow$1.apply(AggregationIterator.scala:180) at org.apache.spark.sql.execution.aggregate.SortBasedAggregationIterator.processCurrentSortedGroup(SortBasedAggregationIterator.scala:115) at org.apache.spark.sql.execution.aggregate.SortBasedAggregationIterator.next(SortBasedAggregationIterator.scala:150) at org.apache.spark.sql.execution.aggregate.SortBasedAggregationIterator.next(SortBasedAggregationIterator.scala:29) at org.apache.spark.sql.execution.SparkPlan$$anonfun$3.apply(SparkPlan.scala:232) at org.apache.spark.sql.execution.SparkPlan$$anonfun$3.apply(SparkPlan.scala:225) {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org