Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/19363#discussion_r143094589 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/KeyValueGroupedDataset.scala --- @@ -18,16 +18,17 @@ package org.apache.spark.sql import scala.collection.JavaConverters._ +import scala.util.control.NonFatal import org.apache.spark.annotation.{Experimental, InterfaceStability} import org.apache.spark.api.java.function._ import org.apache.spark.sql.catalyst.encoders.{encoderFor, ExpressionEncoder} import org.apache.spark.sql.catalyst.expressions.{Alias, Attribute, CreateStruct} import org.apache.spark.sql.catalyst.plans.logical._ -import org.apache.spark.sql.catalyst.streaming.InternalOutputModes import org.apache.spark.sql.execution.QueryExecution import org.apache.spark.sql.expressions.ReduceAggregator import org.apache.spark.sql.streaming.{GroupState, GroupStateTimeout, OutputMode} +import org.apache.spark.sql.types.StructType --- End diff -- Why import `StructType`? I didn't see you use it.
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