Github user JamesRTaylor commented on a diff in the pull request:

    https://github.com/apache/incubator-phoenix/pull/8#discussion_r9982858
  
    --- Diff: 
phoenix-core/src/main/java/org/apache/phoenix/schema/PArrayDataType.java ---
    @@ -146,11 +237,16 @@ public static void 
positionAtArrayElement(ImmutableBytesWritable ptr, int arrayI
                }
     
                if (baseDataType.getByteSize() == null) {
    -                   int offset = ptr.getOffset() + noOFElementsSize + 
Bytes.SIZEOF_BYTE;
    -                   int indexOffset = Bytes.toInt(bytes, offset) + 
ptr.getOffset();
    -                   int valArrayPostion = offset + Bytes.SIZEOF_INT;
    -                   offset += Bytes.SIZEOF_INT;
    +               int offset = ptr.getOffset();
    --- End diff --
    
    Yes, the current offset for the next element should not point to the zero 
byte - if that's the case, you'll definitely want to fix it. If the byte at an 
offset if a zero byte, no need to do anything else, as this is definitely a 
null.


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