[GitHub] sanha commented on a change in pull request #2: [NEMO-7] Intra-TaskGroup pipelining

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sanha commented on a change in pull request #2: [NEMO-7] Intra-TaskGroup 
pipelining
URL: https://github.com/apache/incubator-nemo/pull/2#discussion_r173048022
 
 

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 ##########
 File path: 
compiler/frontend/spark/src/main/java/edu/snu/nemo/compiler/frontend/spark/transform/ReduceTransform.java
 ##########
 @@ -15,41 +15,62 @@
  */
 package edu.snu.nemo.compiler.frontend.spark.transform;
 
+import com.esotericsoftware.kryo.Kryo;
+import com.esotericsoftware.kryo.io.Output;
 import edu.snu.nemo.common.ir.OutputCollector;
 import edu.snu.nemo.common.ir.vertex.transform.Transform;
+import edu.snu.nemo.compiler.frontend.spark.core.java.JavaRDD;
 import org.apache.spark.api.java.function.Function2;
 
 import javax.annotation.Nullable;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
 import java.util.Iterator;
 
+
 
 Review comment:
   Please remove this redundant newline.

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