diff --git a/core/src/main/java/org/elasticsearch/action/admin/cluster/allocation/ClusterAllocationExplanation.java b/core/src/main/java/org/elasticsearch/action/admin/cluster/allocation/ClusterAllocationExplanation.java
index ab0283f0564..eae221370de 100644
--- a/core/src/main/java/org/elasticsearch/action/admin/cluster/allocation/ClusterAllocationExplanation.java
+++ b/core/src/main/java/org/elasticsearch/action/admin/cluster/allocation/ClusterAllocationExplanation.java
@@ -19,12 +19,8 @@
 
 package org.elasticsearch.action.admin.cluster.allocation;
 
-import org.apache.lucene.index.CorruptIndexException;
-import org.elasticsearch.ExceptionsHelper;
-import org.elasticsearch.action.admin.indices.shards.IndicesShardStoresResponse;
 import org.elasticsearch.cluster.node.DiscoveryNode;
 import org.elasticsearch.cluster.routing.UnassignedInfo;
-import org.elasticsearch.cluster.routing.allocation.decider.Decision;
 import org.elasticsearch.common.Nullable;
 import org.elasticsearch.common.io.stream.StreamInput;
 import org.elasticsearch.common.io.stream.StreamOutput;
@@ -33,16 +29,10 @@ import org.elasticsearch.common.unit.TimeValue;
 import org.elasticsearch.common.xcontent.ToXContent;
 import org.elasticsearch.common.xcontent.XContentBuilder;
 import org.elasticsearch.index.shard.ShardId;
-import org.elasticsearch.index.shard.ShardStateMetaData;
 
 import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Collections;
 import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
 import java.util.Map;
-import java.util.Set;
 
 /**
  * A {@code ClusterAllocationExplanation} is an explanation of why a shard may or may not be allocated to nodes. It also includes weights