[
https://issues.apache.org/jira/browse/HIVE-25546?focusedWorklogId=658350&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-658350
]
ASF GitHub Bot logged work on HIVE-25546:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 30/Sep/21 13:37
Start Date: 30/Sep/21 13:37
Worklog Time Spent: 10m
Work Description: kasakrisz commented on a change in pull request #2663:
URL: https://github.com/apache/hive/pull/2663#discussion_r719415132
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/views/HiveInsertOnlyScanWriteIdRule.java
##########
@@ -0,0 +1,56 @@
+/*
+ * 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.optimizer.calcite.rules.views;
+
+import org.apache.calcite.plan.RelOptRule;
+import org.apache.calcite.plan.RelOptRuleCall;
+import org.apache.calcite.rel.RelNode;
+import org.apache.hadoop.hive.ql.io.AcidUtils;
+import org.apache.hadoop.hive.ql.metadata.Table;
+import org.apache.hadoop.hive.ql.optimizer.calcite.RelOptHiveTable;
+import org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveTableScan;
+
+import static
org.apache.hadoop.hive.conf.Constants.INSERT_ONLY_FETCH_BUCKET_ID;
+
+/**
+ * This rule turns on populating writeId of insert only table scans.
+ */
+public class HiveInsertOnlyScanWriteIdRule extends RelOptRule {
+
+ public static final HiveInsertOnlyScanWriteIdRule INSTANCE = new
HiveInsertOnlyScanWriteIdRule();
+
+ private HiveInsertOnlyScanWriteIdRule() {
+ super(operand(HiveTableScan.class, none()));
+ }
+
+ @Override
+ public boolean matches(RelOptRuleCall call) {
+ HiveTableScan tableScan = call.rel(0);
+ Table tableMD = ((RelOptHiveTable) tableScan.getTable()).getHiveTableMD();
+ return !tableMD.isMaterializedView() &&
AcidUtils.isInsertOnlyTable(tableMD);
+ }
+
+ @Override
+ public void onMatch(RelOptRuleCall call) {
+ HiveTableScan tableScan = call.rel(0);
+ RelNode newTableScan = call.builder()
+
.push(tableScan.setTableScanTrait(HiveTableScan.HiveTableScanTrait.FetchInsertOnlyBucketIds))
Review comment:
Sure. Added these details to the javadocs.
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Issue Time Tracking
-------------------
Worklog Id: (was: 658350)
Time Spent: 3h (was: 2h 50m)
> Enable incremental rebuild of Materialized views with insert only source
> tables
> -------------------------------------------------------------------------------
>
> Key: HIVE-25546
> URL: https://issues.apache.org/jira/browse/HIVE-25546
> Project: Hive
> Issue Type: Improvement
> Components: CBO, Materialized views
> Reporter: Krisztian Kasa
> Assignee: Krisztian Kasa
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3h
> Remaining Estimate: 0h
>
> {code}
> create table t1(a int, b int, c int) stored as parquet TBLPROPERTIES
> ('transactional'='true', 'transactional_properties'='insert_only');
> create materialized view mat1 stored as orc TBLPROPERTIES
> ('transactional'='true') as
> select a, b, c from t1 where a > 10;
> {code}
> Currently materialized view *mat1* can not be rebuilt incrementally because
> it has an insert only source table (t1). Such tables does not have
> ROW_ID.write_id which is required to identify newly inserted records since
> the last rebuild.
> HIVE-25406 adds the ability to query write_id.
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