[GitHub] sijie commented on a change in pull request #425: BOOKKEEPER-1105: RackAwarePolicy: Failure to map node into rack may result in failure to add other nodes.

[git]

sijie commented on a change in pull request #425: BOOKKEEPER-1105: 
RackAwarePolicy: Failure to map node into rack may result in failure to add 
other nodes.
URL: https://github.com/apache/bookkeeper/pull/425#discussion_r133079157
 
 

 ##########
 File path: 
bookkeeper-server/src/main/java/org/apache/bookkeeper/client/RackawareEnsemblePlacementPolicy.java
 ##########
 @@ -22,6 +22,8 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+
+import com.google.common.base.Preconditions;
 
 Review comment:
   unused import?
 
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