Detect xid; Abort releases locks; Price>0; RAW in same transaction

For now, Socre is 34/100.
RAW means that before reading a value in master, check it in private
first.
Testing requires Entry level locking( T1 write filght1, T2 write
flight2) so I supposed that many changes should be applied.
Basic idea is: Each Transaction creates 4 empty hashtables(HT); updates
(if read, check private HT then master HT) be stored to empty HT(deleted
entries' primary key will become null)[locking at entry level]; when
commit, merge it with a new copy of master HT; make active pointer point
to it.