hvanhovell commented on code in PR #40160:
URL: https://github.com/apache/spark/pull/40160#discussion_r1118920844
##########
connector/connect/client/jvm/src/main/scala/org/apache/spark/sql/SparkSession.scala:
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@@ -89,8 +90,29 @@ class SparkSession(
@Experimental
def sql(sqlText: String, args: java.util.Map[String, String]): DataFrame =
newDataset {
builder =>
- builder
- .setSql(proto.SQL.newBuilder().setQuery(sqlText).putAllArgs(args))
+ // Send the SQL once to the server and then check the output.
+ val cmd = newCommand(b =>
+
b.setSqlCommand(proto.SqlCommand.newBuilder().setSql(sqlText).putAllArgs(args)))
+ val plan = proto.Plan.newBuilder().setCommand(cmd)
+ val response = client.execute(plan.build())
+ val (data, isSqlCommand) =
+ response.asScala.foldLeft((Seq[ByteString](), false))((acc, resp) =>
Review Comment:
OCD using a for loop and some local mutability is a bit easier to read.
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