diff --git a/pom.xml b/pom.xml
index bd088288581..4b36f6c44ef 100644
--- a/pom.xml
+++ b/pom.xml
@@ -229,13 +229,6 @@
             <version>0.7.1</version>
         </dependency>
 
-        <dependency> <!-- ES uses byte* hashes -->
-            <groupId>com.carrotsearch</groupId>
-            <artifactId>hppc</artifactId>
-            <version>0.7.1</version>
-            <classifier>esoteric</classifier>
-        </dependency>
-
         <dependency>
             <groupId>joda-time</groupId>
             <artifactId>joda-time</artifactId>
diff --git a/src/main/java/org/elasticsearch/index/mapper/core/NumberFieldMapper.java b/src/main/java/org/elasticsearch/index/mapper/core/NumberFieldMapper.java
index 088be23c111..05f4044d142 100644
--- a/src/main/java/org/elasticsearch/index/mapper/core/NumberFieldMapper.java
+++ b/src/main/java/org/elasticsearch/index/mapper/core/NumberFieldMapper.java
@@ -19,9 +19,7 @@
 
 package org.elasticsearch.index.mapper.core;
 
-import com.carrotsearch.hppc.DoubleHashSet;
 import com.carrotsearch.hppc.LongArrayList;
-import com.carrotsearch.hppc.LongHashSet;
 
 import org.apache.lucene.analysis.Analyzer;
 import org.apache.lucene.analysis.NumericTokenStream;
diff --git a/src/main/java/org/elasticsearch/percolator/PercolatorService.java b/src/main/java/org/elasticsearch/percolator/PercolatorService.java
index 3edab192d33..9fd56f11778 100644
--- a/src/main/java/org/elasticsearch/percolator/PercolatorService.java
+++ b/src/main/java/org/elasticsearch/percolator/PercolatorService.java
@@ -18,7 +18,7 @@
  */
 package org.elasticsearch.percolator;
 
-import com.carrotsearch.hppc.ByteObjectHashMap;
+import com.carrotsearch.hppc.IntObjectHashMap;
 import com.google.common.collect.Lists;
 
 import org.apache.lucene.index.LeafReaderContext;
@@ -109,7 +109,7 @@ public class PercolatorService extends AbstractComponent {
     public final static String TYPE_NAME = ".percolator";
 
     private final IndicesService indicesService;
-    private final ByteObjectHashMap<PercolatorType> percolatorTypes;
+    private final IntObjectHashMap<PercolatorType> percolatorTypes;
     private final PageCacheRecycler pageCacheRecycler;
     private final BigArrays bigArrays;
     private final ClusterService clusterService;
@@ -153,7 +153,7 @@ public class PercolatorService extends AbstractComponent {
         single = new SingleDocumentPercolatorIndex(cache);
         multi = new MultiDocumentPercolatorIndex(cache);
 
-        percolatorTypes = new ByteObjectHashMap<>(6);
+        percolatorTypes = new IntObjectHashMap<>(6);
         percolatorTypes.put(countPercolator.id(), countPercolator);
         percolatorTypes.put(queryCountPercolator.id(), queryCountPercolator);
         percolatorTypes.put(matchPercolator.id(), matchPercolator);
diff --git a/src/test/java/org/elasticsearch/index/fielddata/LongFieldDataTests.java b/src/test/java/org/elasticsearch/index/fielddata/LongFieldDataTests.java
index 2b293bd088f..09a24a4283c 100644
--- a/src/test/java/org/elasticsearch/index/fielddata/LongFieldDataTests.java
+++ b/src/test/java/org/elasticsearch/index/fielddata/LongFieldDataTests.java
@@ -19,9 +19,7 @@
 
 package org.elasticsearch.index.fielddata;
 
-import com.carrotsearch.hppc.DoubleHashSet;
 import com.carrotsearch.hppc.LongHashSet;
-import com.carrotsearch.hppc.cursors.DoubleCursor;
 import com.carrotsearch.hppc.cursors.LongCursor;
 
 import org.apache.lucene.document.Document;
@@ -37,7 +35,9 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Random;
 
-import static org.hamcrest.Matchers.*;
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.lessThan;
 
 /**
  * Tests for all integer types (byte, short, int, long).
@@ -348,7 +348,7 @@ public class LongFieldDataTests extends AbstractNumericFieldDataTests {
         final SortedNumericDocValues data = atomicFieldData.getLongValues();
         final SortedNumericDoubleValues doubleData = atomicFieldData.getDoubleValues();
         final LongHashSet set = new LongHashSet();
-        final DoubleHashSet doubleSet = new DoubleHashSet();
+        final LongHashSet doubleSet = new LongHashSet();
         for (int i = 0; i < values.size(); ++i) {
             final LongHashSet v = values.get(i);
 
@@ -365,17 +365,17 @@ public class LongFieldDataTests extends AbstractNumericFieldDataTests {
             }
             assertThat(set, equalTo(v));
 
-            final DoubleHashSet doubleV = new DoubleHashSet();
+            final LongHashSet doubleV = new LongHashSet();
             for (LongCursor c : v) {
-                doubleV.add(c.value);
+                doubleV.add(Double.doubleToLongBits(c.value));
             }
             doubleSet.clear();
             doubleData.setDocument(i);
             numValues = doubleData.count();
             double prev = 0;
             for (int j = 0; j < numValues; j++) {
-                double current;
-                doubleSet.add(current = doubleData.valueAt(j));
+                double current = doubleData.valueAt(j);
+                doubleSet.add(Double.doubleToLongBits(current));
                 if (j > 0) {
                     assertThat(prev, lessThan(current));
                 }