Github user sumansomasundar commented on a diff in the pull request: https://github.com/apache/spark/pull/14762#discussion_r79790670 --- Diff: common/unsafe/src/main/java/org/apache/spark/unsafe/array/ByteArrayMethods.java --- @@ -40,24 +41,41 @@ public static int roundNumberOfBytesToNearestWord(int numBytes) { } } + private static final boolean alignedArch = UnsafeAlignedOffset.getAlignedArch(); /** * Optimized byte array equality check for byte arrays. * @return true if the arrays are equal, false otherwise */ public static boolean arrayEquals( Object leftBase, long leftOffset, Object rightBase, long rightOffset, final long length) { int i = 0; - while (i <= length - 8) { - if (Platform.getLong(leftBase, leftOffset + i) != - Platform.getLong(rightBase, rightOffset + i)) { - return false; + + // check if stars align and we can get both offsets to be aligned + if ((leftOffset % 8 != 0) && ((leftOffset % 8) == (rightOffset % 8))) { --- End diff -- Changed.
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