public String toCoordinateString() {
        return "knownTornStart=" + knownTornStart + ", firstRowStart=" + firstRowStart
            + ", lastRowStart=" + lastRowStart + ", lastRowEnd=" + lastRowEnd;
      }
Gets the end offset of the current row, or -1 if unknown.
llap-server/src/java/org/apache/hadoop/hive/llap/io/encoded/SerDeEncodedDataReader.java