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https://issues.apache.org/jira/browse/HIVE-27187?focusedWorklogId=854845&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-854845
]
ASF GitHub Bot logged work on HIVE-27187:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 04/Apr/23 16:02
Start Date: 04/Apr/23 16:02
Worklog Time Spent: 10m
Work Description: kasakrisz commented on code in PR #4166:
URL: https://github.com/apache/hive/pull/4166#discussion_r1157469710
##########
ql/src/java/org/apache/hadoop/hive/ql/ddl/view/materialized/alter/rebuild/NonNativeMaterializedViewASTBuilder.java:
##########
@@ -0,0 +1,49 @@
+/*
+ * 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.ddl.view.materialized.alter.rebuild;
+
+import org.apache.hadoop.hive.ql.Context;
+import org.apache.hadoop.hive.ql.metadata.Table;
+import org.apache.hadoop.hive.ql.metadata.VirtualColumn;
+import org.apache.hadoop.hive.ql.parse.ASTNode;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import static java.util.Collections.singletonList;
+
+public class NonNativeMaterializedViewASTBuilder extends
MaterializedViewASTBuilder {
Review Comment:
Renamed
Issue Time Tracking
-------------------
Worklog Id: (was: 854845)
Time Spent: 3h 10m (was: 3h)
> Incremental rebuild of materialized view having aggregate and stored by
> iceberg
> -------------------------------------------------------------------------------
>
> Key: HIVE-27187
> URL: https://issues.apache.org/jira/browse/HIVE-27187
> Project: Hive
> Issue Type: Improvement
> Components: Iceberg integration, Materialized views
> Reporter: Krisztian Kasa
> Assignee: Krisztian Kasa
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> Currently incremental rebuild of materialized view stored by iceberg which
> definition query contains aggregate operator is transformed to an insert
> overwrite statement which contains a union operator if the source tables
> contains insert operations only. One branch of the union scans the view the
> other produces the delta.
> This can be improved further: transform the statement to a multi insert
> statement representing a merge statement to insert new aggregations and
> update existing.
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