Given enough information about the currently parsed key-value calculates next key-value indexOffset and also the header integer (key-size).
Given enough information about the currently parsed key-value calculates next key-value indexOffset and also the header integer (key-size).
end offset of the sorted index block only (starts from 0). Does not include file offset.
header key bytes already read.
reader for the current entry.
this key-values index offset used to calculate next key-values indexOffset and header key byte size.
normalised size for entry sorted index entry. 0 if not normalised.
Tuple2 that contains the indexOffset of next key-value and next key-values size.