merge example like this: small: id updatatime 1 9:00 2 8:00 6 9:00
big: id updatetime 1 10:00 2 7:00 3 9:00 4 9:00 5 9:00 as for record in small: id=1,small.update<big.update,do nothing; id=2,small.update>bigdate.update,update big; id=6,big doesn't have that record,insert big; for our solution: append all small record to big, big: id updatetime 1 10:00 2 7:00(to be delete) 3 9:00 4 9:00 5 9:00 1 9:00(to be deleted) 2 8:00 6 9:00 then,for records in big which have the same id,max updatetime stays. -- View this message in context: http://apache-carbondata-dev-mailing-list-archive.1130556.n5.nabble.com/when-plan-to-implemnt-merge-operation-tp13228p13288.html Sent from the Apache CarbonData Dev Mailing List archive mailing list archive at Nabble.com.
