From 3c83cee118137e3d5bbe0c942e92e179d1234d5b Mon Sep 17 00:00:00 2001
From: Allen Wittenauer <aw@apache.org>
Date: Wed, 25 May 2016 15:28:02 -0700
Subject: [PATCH] HADOOP-12925. Checks for SPARC architecture need to include
 64-bit SPARC (Alan Burlison via aw)

---
 .../main/java/org/apache/hadoop/io/FastByteComparisons.java | 2 +-
 .../src/main/java/org/apache/hadoop/util/NativeCrc32.java   | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/FastByteComparisons.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/FastByteComparisons.java
index a3fea3115cb..705678ec182 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/FastByteComparisons.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/FastByteComparisons.java
@@ -75,7 +75,7 @@ abstract class FastByteComparisons {
      * implementation if unable to do so.
      */
     static Comparer<byte[]> getBestComparer() {
-      if (System.getProperty("os.arch").equals("sparc")) {
+      if (System.getProperty("os.arch").toLowerCase().startsWith("sparc")) {
         if (LOG.isTraceEnabled()) {
           LOG.trace("Lexicographical comparer selected for "
               + "byte aligned system architecture");
diff --git a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/NativeCrc32.java b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/NativeCrc32.java
index cacf006d431..0669b0abd24 100644
--- a/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/NativeCrc32.java
+++ b/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/NativeCrc32.java
@@ -33,7 +33,11 @@ class NativeCrc32 {
    * Return true if the JNI-based native CRC extensions are available.
    */
   public static boolean isAvailable() {
-    return NativeCodeLoader.isNativeCodeLoaded();
+    if (System.getProperty("os.arch").toLowerCase().startsWith("sparc")) {
+      return false;
+    } else {
+      return NativeCodeLoader.isNativeCodeLoaded();
+    }
   }
 
   /**