Currently the MappedByteBuffer block files copy data from its internal mappedByteBuffer to an array. In many situations you want to directly access the mappedbytebuffer (or a slice of it) to increase IO speed.
RecordFile and SplitRecordFile now has an optional function getMapped that returns a MappedByteBuffer instead of byte[] to a record. This issue will be closed for now
Currently the MappedByteBuffer block files copy data from its internal mappedByteBuffer to an array. In many situations you want to directly access the mappedbytebuffer (or a slice of it) to increase IO speed.