cloud-fan commented on a change in pull request #27935: [SPARK-25121][SQL]
Supports multi-part table names for broadcast hint resolution
URL: https://github.com/apache/spark/pull/27935#discussion_r394922104
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File path:
sql/core/src/test/scala/org/apache/spark/sql/DataFrameJoinSuite.scala
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@@ -322,4 +325,81 @@ class DataFrameJoinSuite extends QueryTest
}
}
}
+
+ test("Supports multi-part names for broadcast hint resolution") {
+ val (table1Name, table2Name) = ("t1", "t2")
+
+ withTempDatabase { dbName =>
+ withTable(table1Name, table2Name) {
+ withSQLConf(SQLConf.AUTO_BROADCASTJOIN_THRESHOLD.key -> "-1") {
+ spark.range(50).write.saveAsTable(s"$dbName.$table1Name")
+ spark.range(100).write.saveAsTable(s"$dbName.$table2Name")
+
+ // First, makes sure a join is not broadcastable
+ val plan = sql(s"SELECT * FROM $dbName.$table1Name,
$dbName.$table2Name " +
+ s"WHERE $table1Name.id = $table2Name.id")
+ .queryExecution.executedPlan
+ assert(plan.collect { case p: BroadcastHashJoinExec => p }.isEmpty)
+
+ def checkIfHintApplied(tableName: String, hintTableName: String):
Unit = {
Review comment:
cann we test DataFrame hint API as well?
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