# Table definitions Table [ Primary key ] other data base [ A B C ] D E MV [ D C ] A B E
# Initial data base -> MV [ a b c ] d e -> [d c] a b e [ a' b c ] d e -> [d c] a' b e ## Mutations -> expected outcome M1: base [ a b c ] d e' -> MV [ d c ] a b e' M2: base [ a b c ] d' e -> MV [ d' c ] a b e ## processing bug Assume lock can not be obtained during processing of M1. The mutation M1 sleeps to wait for lock. (Trunk Keyspace.java : 601 ) Assume M2 obtains the lock and executes. MV is now [ d' c ] a b e M1 then obtains the lock and executes MV is now [ d c ] a b e' [ d' c] a b e base is [ a b c ] d e' MV entry "[ d' c ] a b e" is orphaned
