From e3529f68d195f1c00d03145c177cf67b69f96f02 Mon Sep 17 00:00:00 2001
From: Ivan Sadikov <ivan.sadikov@team.telstra.com>
Date: Wed, 29 Nov 2017 16:06:53 +1300
Subject: [PATCH] fix low cost identity hash map name

---
 .../org/apache/arrow/memory/AllocationManager.java     |  2 +-
 ...IdentityHasMap.java => LowCostIdentityHashMap.java} | 10 +++++-----
 ...tityHasMap.java => TestLowCostIdentityHashMap.java} |  6 +++---
 3 files changed, 9 insertions(+), 9 deletions(-)
 rename java/memory/src/main/java/org/apache/arrow/memory/{LowCostIdentityHasMap.java => LowCostIdentityHashMap.java} (98%)
 rename java/memory/src/test/java/org/apache/arrow/memory/{TestLowCostIdentityHasMap.java => TestLowCostIdentityHashMap.java} (95%)

diff --git a/java/memory/src/main/java/org/apache/arrow/memory/AllocationManager.java b/java/memory/src/main/java/org/apache/arrow/memory/AllocationManager.java
index 14687b54634..419be342972 100644
--- a/java/memory/src/main/java/org/apache/arrow/memory/AllocationManager.java
+++ b/java/memory/src/main/java/org/apache/arrow/memory/AllocationManager.java
@@ -76,7 +76,7 @@ public class AllocationManager {
   private final UnsafeDirectLittleEndian underlying;
   // ARROW-1627 Trying to minimize memory overhead caused by previously used IdentityHashMap
   // see JIRA for details
-  private final LowCostIdentityHasMap<BaseAllocator, BufferLedger> map = new LowCostIdentityHasMap<>();
+  private final LowCostIdentityHashMap<BaseAllocator, BufferLedger> map = new LowCostIdentityHashMap<>();
   private final ReadWriteLock lock = new ReentrantReadWriteLock();
   private final AutoCloseableLock readLock = new AutoCloseableLock(lock.readLock());
   private final AutoCloseableLock writeLock = new AutoCloseableLock(lock.writeLock());
diff --git a/java/memory/src/main/java/org/apache/arrow/memory/LowCostIdentityHasMap.java b/java/memory/src/main/java/org/apache/arrow/memory/LowCostIdentityHashMap.java
similarity index 98%
rename from java/memory/src/main/java/org/apache/arrow/memory/LowCostIdentityHasMap.java
rename to java/memory/src/main/java/org/apache/arrow/memory/LowCostIdentityHashMap.java
index 1153fb59364..fb7033815d5 100644
--- a/java/memory/src/main/java/org/apache/arrow/memory/LowCostIdentityHasMap.java
+++ b/java/memory/src/main/java/org/apache/arrow/memory/LowCostIdentityHashMap.java
@@ -28,7 +28,7 @@
  * that provides "getKey" method
  * @param <V>
  */
-public class LowCostIdentityHasMap<K, V extends ValueWithKeyIncluded<K>> {
+public class LowCostIdentityHashMap<K, V extends ValueWithKeyIncluded<K>> {
 
   /*
    * The internal data structure to hold values.
@@ -52,7 +52,7 @@ public class LowCostIdentityHasMap<K, V extends ValueWithKeyIncluded<K>> {
   /**
    * Creates an Map with default expected maximum size.
    */
-  public LowCostIdentityHasMap() {
+  public LowCostIdentityHashMap() {
     this(DEFAULT_MIN_SIZE);
   }
 
@@ -63,7 +63,7 @@ public LowCostIdentityHasMap() {
    *            The estimated maximum number of entries that will be put in
    *            this map.
    */
-  public LowCostIdentityHasMap(int maxSize) {
+  public LowCostIdentityHashMap(int maxSize) {
     if (maxSize >= 0) {
       this.size = 0;
       threshold = getThreshold(maxSize);
@@ -96,7 +96,7 @@ private int computeElementArraySize() {
   private Object[] newElementArray(int s) {
     return new Object[s];
   }
-  
+
   /**
    * Removes all elements from this map, leaving it empty.
    *
@@ -331,4 +331,4 @@ public V getNextValue() {
     }
     return null;
   }
-}
\ No newline at end of file
+}
diff --git a/java/memory/src/test/java/org/apache/arrow/memory/TestLowCostIdentityHasMap.java b/java/memory/src/test/java/org/apache/arrow/memory/TestLowCostIdentityHashMap.java
similarity index 95%
rename from java/memory/src/test/java/org/apache/arrow/memory/TestLowCostIdentityHasMap.java
rename to java/memory/src/test/java/org/apache/arrow/memory/TestLowCostIdentityHashMap.java
index c1196147b49..0237b38048f 100644
--- a/java/memory/src/test/java/org/apache/arrow/memory/TestLowCostIdentityHasMap.java
+++ b/java/memory/src/test/java/org/apache/arrow/memory/TestLowCostIdentityHashMap.java
@@ -27,11 +27,11 @@
 /**
  * To test simplified implementation of IdentityHashMap
  */
-public class TestLowCostIdentityHasMap {
+public class TestLowCostIdentityHashMap {
 
   @Test
   public void testIdentityHashMap() throws Exception {
-    LowCostIdentityHasMap<String, StringWithKey> hashMap = new LowCostIdentityHasMap<>();
+    LowCostIdentityHashMap<String, StringWithKey> hashMap = new LowCostIdentityHashMap<>();
 
     StringWithKey obj1 = new StringWithKey("s1key", "s1value");
     StringWithKey obj2 = new StringWithKey("s2key", "s2value");
@@ -88,7 +88,7 @@ public void testIdentityHashMap() throws Exception {
 
   @Test
   public void testLargeMap() throws Exception {
-    LowCostIdentityHasMap<String, StringWithKey> hashMap = new LowCostIdentityHasMap<>();
+    LowCostIdentityHashMap<String, StringWithKey> hashMap = new LowCostIdentityHashMap<>();
 
     String [] keys = new String[200];
     for (int i = 0; i < 200; i++) {