amaliujia commented on code in PR #38778:
URL: https://github.com/apache/spark/pull/38778#discussion_r1030950684


##########
python/pyspark/sql/connect/plan.py:
##########
@@ -640,6 +640,8 @@ def __init__(
             join_type = proto.Join.JoinType.JOIN_TYPE_LEFT_SEMI
         elif how in ["leftanti", "anti"]:
             join_type = proto.Join.JoinType.JOIN_TYPE_LEFT_ANTI
+        elif how == "cross":
+            join_type = proto.Join.JoinType.JOIN_TYPE_CROSS

Review Comment:
   you will also need to update the error message in `else` in which `cross 
join` is not mentioned:
   
   ``` 
   else:
               raise NotImplementedError(
                   """
                   Unsupported join type: %s. Supported join types include:
                   "inner", "outer", "full", "fullouter", "full_outer",
                   "leftouter", "left", "left_outer", "rightouter",
                   "right", "right_outer", "leftsemi", "left_semi",
                   "semi", "leftanti", "left_anti", "anti",
                   """
                   % how
               )
    ```



##########
connector/connect/src/main/scala/org/apache/spark/sql/connect/planner/SparkConnectPlanner.scala:
##########
@@ -19,9 +19,7 @@ package org.apache.spark.sql.connect.planner
 
 import scala.collection.JavaConverters._
 import scala.collection.mutable
-

Review Comment:
   Should revert these?



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