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https://issues.apache.org/jira/browse/FLINK-2714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14958687#comment-14958687
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ASF GitHub Bot commented on FLINK-2714:
---------------------------------------
Github user vasia commented on a diff in the pull request:
https://github.com/apache/flink/pull/1250#discussion_r42106061
--- Diff:
flink-libraries/flink-gelly/src/main/java/org/apache/flink/graph/library/TriangleEnumerator.java
---
@@ -0,0 +1,347 @@
+/*
+ * 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.graph.library;
+
+import org.apache.flink.api.common.functions.MapFunction;
+import org.apache.flink.api.common.functions.ReduceFunction;
+import org.apache.flink.api.common.functions.FlatMapFunction;
+import org.apache.flink.api.common.functions.JoinFunction;
+import org.apache.flink.api.common.functions.GroupReduceFunction;
+import org.apache.flink.api.common.operators.Order;
+import org.apache.flink.api.java.DataSet;
+import org.apache.flink.api.java.ExecutionEnvironment;
+import org.apache.flink.api.java.functions.FunctionAnnotation;
+import org.apache.flink.api.java.tuple.Tuple3;
+import org.apache.flink.api.java.tuple.Tuple4;
+import org.apache.flink.graph.Edge;
+import org.apache.flink.graph.Graph;
+import org.apache.flink.graph.GraphAlgorithm;
+import org.apache.flink.graph.example.utils.TriangleCountData;
+import org.apache.flink.types.NullValue;
+import org.apache.flink.util.Collector;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+
+/**
+ * This function returns number of triangles present in the input graph.
--- End diff --
Also, it might be useful to clarify that the edge direction is not
considered.
> Port the Flink DataSet Triangle Enumeration example to the Gelly library
> ------------------------------------------------------------------------
>
> Key: FLINK-2714
> URL: https://issues.apache.org/jira/browse/FLINK-2714
> Project: Flink
> Issue Type: Task
> Components: Gelly
> Affects Versions: 0.10
> Environment:
> Reporter: Andra Lungu
> Assignee: Saumitra Shahapure
> Priority: Trivial
> Labels: newbie, starter
>
> Currently, the Gelly library contains one method for counting the number of
> triangles in a graph: a gather-apply-scatter version.
> This issue proposes the addition of a library method based on this Flink
> example:
> https://github.com/apache/flink/blob/master/flink-examples/flink-java-examples/src/main/java/org/apache/flink/examples/java/graph/EnumTrianglesOpt.java
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