[GitHub] [hive] adesh-rao commented on a change in pull request #1237: HIVE-23618: Enable event replication for default/check constraints

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

adesh-rao commented on a change in pull request #1237:
URL: https://github.com/apache/hive/pull/1237#discussion_r477218017



##########
File path: itests/hive-unit/src/test/java/org/apache/hadoop/hive/ql/parse/TestReplicationScenarios.java
##########
@@ -3060,13 +3049,19 @@ public void testConstraints() throws IOException {
       assertEquals(fks.size(), 2);
       List<SQLNotNullConstraint> nns = metaStoreClientMirror.getNotNullConstraints(new NotNullConstraintsRequest(DEFAULT_CATALOG_NAME, replDbName , "tbl3"));
       assertEquals(nns.size(), 1);
+      List<SQLCheckConstraint> cks = metaStoreClientMirror.getCheckConstraints(new CheckConstraintsRequest(DEFAULT_CATALOG_NAME, replDbName , "tbl7"));

Review comment:
       External tables don't support default/check constraints yet. So, skipped adding for external table.

##########
File path: ql/src/java/org/apache/hadoop/hive/ql/parse/repl/load/message/AddCheckConstraintHandler.java
##########
@@ -0,0 +1,75 @@
+/*
+ * 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.hadoop.hive.ql.parse.repl.load.message;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.apache.hadoop.hive.common.TableName;
+import org.apache.hadoop.hive.metastore.api.SQLCheckConstraint;
+import org.apache.hadoop.hive.metastore.messaging.AddCheckConstraintMessage;
+import org.apache.hadoop.hive.ql.ddl.DDLWork;
+import org.apache.hadoop.hive.ql.ddl.table.constraint.Constraints;
+import org.apache.hadoop.hive.ql.ddl.table.constraint.add.AlterTableAddConstraintDesc;
+import org.apache.hadoop.hive.ql.exec.Task;
+import org.apache.hadoop.hive.ql.exec.TaskFactory;
+import org.apache.hadoop.hive.ql.parse.SemanticException;
+
+public class AddCheckConstraintHandler extends AbstractMessageHandler {

Review comment:
       Added comments.
   
   I couldn't find any existing unit tests for other *Handler classes, and since TestReplicationScenarios in itests is covering this end-to-end, I skipped unit tests.




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