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https://issues.apache.org/jira/browse/SAMOA-16?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14513688#comment-14513688
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ASF GitHub Bot commented on SAMOA-16:
-------------------------------------
Github user gdfm commented on a diff in the pull request:
https://github.com/apache/incubator-samoa/pull/11#discussion_r29127205
--- Diff:
samoa-flink/src/main/java/com/yahoo/labs/flink/com/yahoo/labs/flink/helpers/CircleDetection.java
---
@@ -0,0 +1,91 @@
+package com.yahoo.labs.flink.com.yahoo.labs.flink.helpers;
+
+/*
+ * #%L
+ * SAMOA
+ * %%
+ * Copyright (C) 2013 - 2015 Yahoo! Inc.
+ * %%
+ * Licensed 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.
+ * #L%
+ */
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Stack;
+
+public class CircleDetection {
--- End diff --
Could you add a comment explaining why we need circle detection?
> Add an adapter for Apache Flink-Streaming
> -----------------------------------------
>
> Key: SAMOA-16
> URL: https://issues.apache.org/jira/browse/SAMOA-16
> Project: SAMOA
> Issue Type: New Feature
> Reporter: Paris Carbone
> Assignee: Gianmarco De Francisci Morales
>
> Apache Flink-Streaming is a new system for distributed stream processing
> built for unique and flexible high level stream transformations. A Flink
> adapter for Samoa should be able to translate a Samoa Task topology into
> Flink streaming transformations. Some of the challenges are the compositional
> topology support, circle detection and their translation to Flink iterations.
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