hbase filter

new ValueFilter(
  CompareOp.LESS,
  new BinaryComparator(Bytes.toBytes("a"))
);


new QualifierFilter(
  CompareOp.NOT_EQUAL,
  new BinaryPrefixComparator(Bytes.toBytes("Column"))
);



new RowFilter(
  CompareOp.EQUAL,
  new SubstringComparator("KEY1")
);

new RowFilter(
  CompareOp.EQUAL,
  new RegexStringComparator("^KEY[12]")
);