Github user QiangCai commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1379#discussion_r140966782
--- Diff:
integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/AlterTableCompactionCommand.scala
---
@@ -0,0 +1,91 @@
+/*
+ * 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.execution.command.management
+
+import org.apache.spark.sql.{CarbonEnv, Row, SparkSession}
+import org.apache.spark.sql.execution.command.{AlterTableModel,
DataProcessCommand, RunnableCommand}
+import org.apache.spark.sql.hive.CarbonRelation
+
+import org.apache.carbondata.common.logging.{LogService, LogServiceFactory}
+import org.apache.carbondata.core.constants.CarbonCommonConstants
+import org.apache.carbondata.core.util.CarbonProperties
+import org.apache.carbondata.processing.model.{CarbonDataLoadSchema,
CarbonLoadModel}
+import org.apache.carbondata.spark.rdd.CarbonDataRDDFactory
+
+/**
+ * Command for the compaction in alter table command
+ */
+case class AlterTableCompactionCommand(
+ alterTableModel: AlterTableModel)
+ extends RunnableCommand with DataProcessCommand {
+
+ val LOGGER: LogService =
LogServiceFactory.getLogService(this.getClass.getName)
--- End diff --
move LOGGER into the processData method
better to keep all commands serializable for the cloud scenario
---
