taegeonum commented on a change in pull request #203: [NEMO-360] Implementing 
an 'XGBoostPolicy'
URL: https://github.com/apache/incubator-nemo/pull/203#discussion_r267575429
 
 

 ##########
 File path: 
compiler/optimizer/src/main/java/org/apache/nemo/compiler/optimizer/NemoOptimizer.java
 ##########
 @@ -54,11 +58,17 @@
   /**
    * @param dagDirectory to store JSON representation of intermediate DAGs.
    * @param policyName the name of the optimization policy.
+   * @param environmentType the environment type of the workload to optimize 
the DAG for.
+   * @param clientRPC the RPC channel to communicate with the client.
    */
   @Inject
   private NemoOptimizer(@Parameter(JobConf.DAGDirectory.class) final String 
dagDirectory,
-                        @Parameter(JobConf.OptimizationPolicy.class) final 
String policyName) {
+                        @Parameter(JobConf.OptimizationPolicy.class) final 
String policyName,
+                        @Parameter(JobConf.EnvironmentType.class) final String 
environmentType,
+                        final ClientRPC clientRPC) {
     this.dagDirectory = dagDirectory;
+    this.environmentType = environmentType;
 
 Review comment:
   Do we have to add environmentType? Why do we need this variable and when is 
it used? Actually, the environment type isn't important because the behavior 
depends on the optimization policy? 

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