[SPARK-18963] o.a.s.unsafe.types.UTF8StringSuite.writeToOutputStreamIntArray test

fails on big endian. Only change byte order on little endian

## What changes were proposed in this pull request?

Fix test to only change byte order on LE platforms

## How was this patch tested?

Test run on Big Endian and Little Endian platforms

Author: Pete Robbins <robbinspg@gmail.com>

Closes #16375 from robbinspg/SPARK-18963.

1 files changed, 1 insertions, 1 deletions

diff --git a/common/unsafe/src/test/java/org/apache/spark/unsafe/types/UTF8StringSuite.java b/common/unsafe/src/test/java/org/apache/spark/unsafe/types/UTF8StringSuite.java
index 04f684577d..6f6e0ef0e4 100644
--- a/common/unsafe/src/test/java/org/apache/spark/unsafe/types/UTF8StringSuite.java
+++ b/common/unsafe/src/test/java/org/apache/spark/unsafe/types/UTF8StringSuite.java
@@ -591,7 +591,7 @@ public class UTF8StringSuite {
     // verify that writes work on objects that are not byte arrays
     final ByteBuffer buffer = StandardCharsets.UTF_8.encode("大千世界");
     buffer.position(0);
-    buffer.order(ByteOrder.LITTLE_ENDIAN);
+    buffer.order(ByteOrder.nativeOrder());
 
     final int length = buffer.limit();
     assertEquals(12, length);