[HUDI-3512] Add call procedure for StatsCommand (#5955)

Co-authored-by: zhanshaoxiong <shaoxiong0001@@gmail.com>

hudi-spark-datasource/hudi-spark/src/test/scala/org/apache/spark/sql/hudi/procedure/TestStatsProcedure.scala

@@ -0,0 +1,99 @@
+/*
+ * 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.hudi.procedure
+
+import org.apache.spark.sql.hudi.HoodieSparkSqlTestBase
+
+class TestStatsProcedure extends HoodieSparkSqlTestBase {
+  test("Test Call stats_wa Procedure") {
+    withTempDir { tmp =>
+      val tableName = generateTableName
+      val tablePath = s"${tmp.getCanonicalPath}/$tableName"
+      // create table
+      spark.sql(
+        s"""
+           |create table $tableName (
+           |  id int,
+           |  name string,
+           |  price double,
+           |  ts long
+           |) using hudi
+           | partitioned by (ts)
+           | location '$tablePath'
+           | tblproperties (
+           |  primaryKey = 'id',
+           |  preCombineField = 'ts'
+           | )
+       """.stripMargin)
+      // insert data to table
+      spark.sql(s"insert into $tableName select 1, 'a1', 10, 1000")
+      spark.sql(s"insert into $tableName select 2, 'a2', 20, 1500")
+      spark.sql(s"update $tableName set name = 'b1', price = 100 where id = 1")
+
+      // Check required fields
+      checkExceptionContain(s"""call stats_wa(limit => 10)""")(
+        s"Argument: table is required")
+
+      // collect result for table
+      val result = spark.sql(
+        s"""call stats_wa(table => '$tableName')""".stripMargin).collect()
+      assertResult(4) {
+        result.length
+      }
+    }
+  }
+
+  test("Test Call stats_filesizes Procedure") {
+    withTempDir { tmp =>
+      val tableName = generateTableName
+      val tablePath = s"${tmp.getCanonicalPath}/$tableName"
+      // create table
+      spark.sql(
+        s"""
+           |create table $tableName (
+           |  id int,
+           |  name string,
+           |  price double,
+           |  ts long
+           |) using hudi
+           | partitioned by (ts)
+           | location '$tablePath'
+           | tblproperties (
+           |  primaryKey = 'id',
+           |  preCombineField = 'ts'
+           | )
+       """.stripMargin)
+      // insert data to table
+      spark.sql(s"insert into $tableName select 1, 'a1', 10, 1000")
+      spark.sql(s"insert into $tableName select 2, 'a2', 20, 1500")
+
+      // Check required fields
+      checkExceptionContain(s"""call stats_filesizes(limit => 10)""")(
+        s"Argument: table is required")
+
+      // collect result for table
+      val result = spark.sql(
+        s"""call stats_filesizes(table => '$tableName', partition_path => '/*')""".stripMargin).collect()
+      assertResult(3) {
+        result.length
+      }
+    }
+  }
+}