[GitHub] sanha commented on a change in pull request #111: [NEMO-139, 6] Logic in the scheduler for appending jobs, Support RDD caching

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sanha commented on a change in pull request #111: [NEMO-139, 6] Logic in the scheduler for appending jobs, Support RDD caching
URL: https://github.com/apache/incubator-nemo/pull/111#discussion_r211226241
 
 

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 File path: common/src/main/java/edu/snu/nemo/common/ir/vertex/transform/DummyTransform.java
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 @@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2018 Seoul National University
+ *
+ * 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.
+ */
+package edu.snu.nemo.common.ir.vertex.transform;
+
+import edu.snu.nemo.common.ir.OutputCollector;
+
+/**
+ * A {@link Transform} does not emit any output.
+ * @param <T> input/output type.
+ */
+public final class DummyTransform<T> implements Transform<T, T> {
 
 Review comment:
   It seems that the `EmptyComponents` are under the `test` package. Should it be moved to non-test package?

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