PtRowNode

public class CompactPtRowNode {

    /************** fields *******************/
    //these are ordered by their order in the final compressed byte[]

    //all nodes have a token except 1b leaves whose only byte is in the parent fan
    int tokenWidth;
    byte[] token;

    int fanOut; //0 for leaf, meaning no children
    byte[] fan;

    int numCells;// will be 0 for internal nodes

    //these exist if numCells > 0
    //each cell has a column and a timestamp
    byte[] columnOffsets;//offset from the column data start
    byte[] timestampIndexes;//version deltas have fixed widths

    //block index: offset into hfile
    //data block: offset into data array
    byte[] dataOffsets;

    //block index: disk size of data block
    //data block: length of value
    byte[] dataLengths;

    //branches and nubs
    Integer offsetWidth;//boxed Integer because it is not known at first
    byte[] offsetBytes;
}