Xiao Li created SPARK-21647:
-------------------------------
Summary: SortMergeJoin failed when using CROSS
Key: SPARK-21647
URL: https://issues.apache.org/jira/browse/SPARK-21647
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.2.0
Reporter: Xiao Li
{noformat}
val df = Seq((1, 1)).toDF("i", "j")
df.createOrReplaceTempView("T")
withSQLConf(SQLConf.AUTO_BROADCASTJOIN_THRESHOLD.key -> "-1") {
sql("select * from (select a.i from T a cross join T t where t.i = a.i) as t1
" +
"cross join T t2 where t2.i = t1.i").explain(true)
}
{noformat}
The above code could cause the following exception:
{noformat}
SortMergeJoinExec should not take Cross as the JoinType
java.lang.IllegalArgumentException: SortMergeJoinExec should not take Cross as
the JoinType
at
org.apache.spark.sql.execution.joins.SortMergeJoinExec.outputOrdering(SortMergeJoinExec.scala:100)
{noformat}
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