[GitHub] [spark] HyukjinKwon commented on a diff in pull request #39078: [SPARK-41534][CONNECT][SQL] Setup initial client module for Spark Connect

[GitBox <gi...@apache.org>]

HyukjinKwon commented on code in PR #39078:
URL: https://github.com/apache/spark/pull/39078#discussion_r1050319465


##########
connector/connect/client/src/main/scala/org/apache/spark/sql/connect/client/SparkSession.scala:
##########
@@ -0,0 +1,133 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.spark.sql.connect.client
+
+import scala.language.existentials
+
+import io.grpc.{ManagedChannel, ManagedChannelBuilder}
+import org.apache.arrow.memory.RootAllocator
+
+import org.apache.spark.SPARK_VERSION
+import org.apache.spark.connect.proto
+
+
+class SparkSession(
+    private val userContext: proto.UserContext,
+    private val channel: ManagedChannel)
+  extends AutoCloseable {
+  private[this] val stub = proto.SparkConnectServiceGrpc.newBlockingStub(channel)
+
+  private[this] val allocator = new RootAllocator()
+
+  /**
+   * The version of Spark on which this application is running.
+   */
+  def version: String = SPARK_VERSION
+
+  /**
+   * Returns a `DataFrame` with no rows or columns.
+   *
+   * @since 2.0.0

Review Comment:
   ```suggestion
      * @since 3.4.0
   ```



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