public boolean containsNonEmptyColumn(byte[] family, byte[] qualifier) {

    return containsNonEmptyColumn(family, 0, family.length, qualifier, 0, qualifier.length);
  }
Checks if the specified column contains a non-empty value (not a zero-length byte array).
@param family    family name
@param qualifier column qualifier
@return whether or not a latest value exists and is not empty
hbase-client/src/main/java/org/apache/hadoop/hbase/client/Result.java