update name

sql/core/src/main/scala/org/apache/spark/sql/execution/MetadataOnlyOptimizer.scala → sql/core/src/main/scala/org/apache/spark/sql/execution/OptimizeMetadataOnly.scala

@@ -37,7 +37,7 @@ import org.apache.spark.sql.execution.datasources.{HadoopFsRelation, LogicalRela
  * 3. aggregate function on partition columns which have same result w or w/o DISTINCT keyword.
  *  e.g. SELECT Max(col2) FROM tbl GROUP BY col1.
  */
-case class MetadataOnlyOptimizer(
+case class OptimizeMetadataOnly(
     catalog: SessionCatalog,
     conf: CatalystConf) extends Rule[LogicalPlan] {
 

sql/core/src/main/scala/org/apache/spark/sql/execution/SparkOptimizer.scala

@@ -30,7 +30,7 @@ class SparkOptimizer(
   extends Optimizer(catalog, conf) {
 
   override def batches: Seq[Batch] = super.batches :+
-    Batch("Metadata Only Optimization", Once, MetadataOnlyOptimizer(catalog, conf)) :+
+    Batch("Optimize Metadata Only Query", Once, OptimizeMetadataOnly(catalog, conf)) :+
     Batch("Extract Python UDF from Aggregate", Once, ExtractPythonUDFFromAggregate) :+
     Batch("User Provided Optimizers", fixedPoint, experimentalMethods.extraOptimizations: _*)
 }

sql/core/src/test/scala/org/apache/spark/sql/execution/MetadataOnlyOptimizerSuite.scala → sql/core/src/test/scala/org/apache/spark/sql/execution/OptimizeMetadataOnlySuite.scala

@@ -22,7 +22,7 @@ import org.apache.spark.sql.catalyst.plans.logical.LocalRelation
 import org.apache.spark.sql.internal.SQLConf
 import org.apache.spark.sql.test.SharedSQLContext
 
-class MetadataOnlyOptimizerSuite extends QueryTest with SharedSQLContext {
+class OptimizeMetadataOnlySuite extends QueryTest with SharedSQLContext {
   import testImplicits._
 
   override def beforeAll(): Unit = {