public OperationWithAttributes setId(String id) {
    setAttribute(ID_ATRIBUTE, Bytes.toBytes(id));
    return this;
  }
This method allows you to set an identifier on an operation. The original motivation for this
was to allow the identifier to be used in slow query logging, but this could obviously be
useful in other places. One use of this could be to put a class.method identifier in here to
see where the slow query is coming from. id to set for the scan
hbase-client/src/main/java/org/apache/hadoop/hbase/client/OperationWithAttributes.java