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https://issues.apache.org/jira/browse/FLINK-2998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15235368#comment-15235368
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ASF GitHub Bot commented on FLINK-2998:
---------------------------------------
Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1838#discussion_r59231845
--- Diff:
flink-optimizer/src/test/java/org/apache/flink/optimizer/operators/JoinWithDistribution.java
---
@@ -0,0 +1,97 @@
+/*
+ * 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.Plan;
+import org.apache.flink.api.common.functions.JoinFunction;
+import org.apache.flink.api.java.DataSet;
+import org.apache.flink.api.java.ExecutionEnvironment;
+import org.apache.flink.api.java.io.DiscardingOutputFormat;
+import org.apache.flink.api.java.tuple.Tuple3;
+import org.apache.flink.api.java.utils.DataSetUtils;
+import org.apache.flink.optimizer.plan.*;
+import org.apache.flink.optimizer.util.CompilerTestBase;
+import org.apache.flink.runtime.operators.shipping.ShipStrategyType;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class JoinWithDistribution extends CompilerTestBase {
--- End diff --
Rename to `JoinWithDistributionTest`
> Support range partition comparison for multi input nodes.
> ---------------------------------------------------------
>
> Key: FLINK-2998
> URL: https://issues.apache.org/jira/browse/FLINK-2998
> Project: Flink
> Issue Type: New Feature
> Components: Optimizer
> Reporter: Chengxiang Li
> Priority: Minor
>
> The optimizer may have potential opportunity to optimize the DAG while it
> found two input range partition are equivalent, we does not support the
> comparison yet.
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