cfmcgrady commented on code in PR #4702:
URL: https://github.com/apache/kyuubi/pull/4702#discussion_r1174498372
##########
externals/kyuubi-spark-sql-engine/src/main/scala/org/apache/spark/sql/kyuubi/SparkDatasetHelper.scala:
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@@ -232,6 +248,33 @@ object SparkDatasetHelper extends Logging {
.getOrElse(0)
}
+ private def isCommandResultExec(sparkPlan: SparkPlan): Boolean = {
+ // scalastyle:off line.size.limit
+ // the CommandResultExec was introduced in SPARK-35378 (Spark-3.2.x),
after SPARK-35378 the
+ // physical plan of runnable command is CommandResultExec.
+ // for instance:
+ // ```
+ // scala> spark.sql("show tables").queryExecution.executedPlan
+ // res0: org.apache.spark.sql.execution.SparkPlan =
+ // CommandResult <empty>, [namespace#0, tableName#1, isTemporary#2]
+ // +- ShowTables [namespace#0, tableName#1, isTemporary#2],
V2SessionCatalog(spark_catalog), [default]
+ //
+ // scala > spark.sql("show tables").queryExecution.executedPlan.getClass
+ // res1: Class[_ <: org.apache.spark.sql.execution.SparkPlan] = class
org.apache.spark.sql.execution.CommandResultExec
+ // ```
+ // scalastyle:on line.size.limit
+ sparkPlan.getClass.getName ==
"org.apache.spark.sql.execution.CommandResultExec"
+ }
+
+ private lazy val commandResultExecRowsMethod = DynMethods.builder("rows")
+ .impl("org.apache.spark.sql.execution.CommandResultExec")
+ .build()
+
+ private def getRunnableCommandOutputRows(command: SparkPlan):
Seq[InternalRow] = {
+ assert(isCommandResultExec(command))
+ commandResultExecRowsMethod.invoke[Seq[InternalRow]](command)
Review Comment:
updated.
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