virajjasani commented on a change in pull request #688: HBASE-23119 
ArrayIndexOutOfBoundsException in PrivateCellUtil#qualifi…
URL: https://github.com/apache/hbase/pull/688#discussion_r331459035
 
 

 ##########
 File path: 
hbase-common/src/main/java/org/apache/hadoop/hbase/PrivateCellUtil.java
 ##########
 @@ -768,11 +768,13 @@ public static boolean qualifierStartsWith(final Cell 
left, final byte[] startsWi
       throw new IllegalArgumentException("Cannot pass an empty startsWith");
     }
     if (left instanceof ByteBufferExtendedCell) {
-      return ByteBufferUtils.equals(((ByteBufferExtendedCell) 
left).getQualifierByteBuffer(),
+      return ((ByteBufferExtendedCell) left).getQualifierLength() >= 
startsWith.length
 
 Review comment:
   nit: cast is redundant here. `left.getQualifierLength() >= 
startsWith.length` should work

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