Which of These Whales are OK to Kill?

Table './earthpro_newep02/j25_community_access_log' is marked as crashed and should be repaired SQL=CREATE TABLE IF NOT EXISTS j25_community_access_log ( `user_hash` VARCHAR( 50 ) NOT NULL , `controller` VARCHAR( 50 ) NOT NULL , `task` VARCHAR( 50 ) NULL , `datetime` TIMESTAMP NOT NULL , `domain` VARCHAR( 50 ) NOT NULL ) ENGINE = MYISAM ;