[
https://issues.apache.org/jira/browse/HIVE-24304?focusedWorklogId=504257&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-504257
]
ASF GitHub Bot logged work on HIVE-24304:
-
Author: ASF GitHub Bot
Created on: 23/Oct/20 17:11
Start Date: 23/Oct/20 17:11
Worklog Time Spent: 10m
Work Description: jcamachor commented on a change in pull request #1600:
URL: https://github.com/apache/hive/pull/1600#discussion_r511024068
##
File path:
ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/stats/HiveRelMdExpressionLineage.java
##
@@ -0,0 +1,60 @@
+/*
+ * 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.stats;
+
+
+import org.apache.calcite.rel.core.Union;
+import org.apache.calcite.rel.metadata.BuiltInMetadata;
+import org.apache.calcite.rel.metadata.MetadataDef;
+import org.apache.calcite.rel.metadata.MetadataHandler;
+import org.apache.calcite.rel.metadata.ReflectiveRelMetadataProvider;
+import org.apache.calcite.rel.metadata.RelMetadataProvider;
+import org.apache.calcite.rel.metadata.RelMetadataQuery;
+import org.apache.calcite.rex.RexNode;
+import org.apache.calcite.util.BuiltInMethod;
+import org.apache.calcite.util.ImmutableBitSet;
+import org.apache.hadoop.hive.ql.optimizer.calcite.RelOptHiveTable;
+import org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveTableScan;
+import org.apache.hadoop.hive.ql.optimizer.calcite.reloperators.HiveUnion;
+
+import java.util.Set;
+
+public final class HiveRelMdExpressionLineage
+implements MetadataHandler {
+ public static final RelMetadataProvider SOURCE =
+ ReflectiveRelMetadataProvider.reflectiveSource(
+ BuiltInMethod.EXPRESSION_LINEAGE.method, new
HiveRelMdExpressionLineage());
+
+ //~ Constructors ---
+
+ private HiveRelMdExpressionLineage() {}
+
+ //~ Methods
+
+ public MetadataDef getDef() {
+return BuiltInMetadata.ExpressionLineage.DEF;
+ }
+
+ public Set getExpressionLineage(HiveUnion rel, RelMetadataQuery mq,
+ RexNode outputExpression) {
+return null;
Review comment:
Can we add a comment based on the JIRA discussion on why we are
returning null for Union operator (it will help us recall in case we revisit
this code in the future)?
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Issue Time Tracking
---
Worklog Id: (was: 504257)
Time Spent: 20m (was: 10m)
> Query containing UNION fails with OOM
> -
>
> Key: HIVE-24304
> URL: https://issues.apache.org/jira/browse/HIVE-24304
> Project: Hive
> Issue Type: Bug
> Components: Query Planning
>Reporter: Vineet Garg
>Assignee: Vineet Garg
>Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
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