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ASF GitHub Bot commented on FLINK-2871: --------------------------------------- Github user fhueske commented on a diff in the pull request: https://github.com/apache/flink/pull/1469#discussion_r50385924 --- Diff: flink-optimizer/src/main/java/org/apache/flink/optimizer/operators/HashFullOuterJoinBuildSecondDescriptor.java --- @@ -0,0 +1,65 @@ +/* + * 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.flink.optimizer.operators; + +import org.apache.flink.api.common.operators.util.FieldList; +import org.apache.flink.optimizer.dag.TwoInputNode; +import org.apache.flink.optimizer.dataproperties.LocalProperties; +import org.apache.flink.optimizer.dataproperties.RequestedLocalProperties; +import org.apache.flink.optimizer.plan.Channel; +import org.apache.flink.optimizer.plan.DualInputPlanNode; +import org.apache.flink.runtime.operators.DriverStrategy; + +import java.util.Collections; +import java.util.List; + +public class HashFullOuterJoinBuildSecondDescriptor extends AbstractJoinDescriptor { + public HashFullOuterJoinBuildSecondDescriptor(FieldList keys1, FieldList keys2, --- End diff -- same here. > Add OuterJoin strategy with HashTable on outer side > --------------------------------------------------- > > Key: FLINK-2871 > URL: https://issues.apache.org/jira/browse/FLINK-2871 > Project: Flink > Issue Type: New Feature > Components: Local Runtime, Optimizer > Affects Versions: 0.10.0 > Reporter: Fabian Hueske > Assignee: Chengxiang Li > Priority: Minor > > Outer joins are currently supported with two local execution strategies: > - sort-merge join > - hash join where the hash table is built on the inner side. Hence, this > strategy is only supported for left and right outer joins. > In order to support hash-tables on the outer side, we need a special hash > table implementation that gives access to all records which have not been > accessed during the probe phase. -- This message was sent by Atlassian JIRA (v6.3.4#6332)