HUE-7347 [importer] Proper error message when input table does not exist
HUE-7347 [importer] Proper error message when input table does not exist

cloudera/hue,cloudera/hue,todaychi/hue,kawamon/hue,cloudera/hue,kawamon/hue,kawamon/hue,cloudera/hue,kawamon/hue,todaychi/hue,todaychi/hue,kawamon/hue,kawamon/hue,kawamon/hue,kawamon/hue,cloudera/hue,kawamon/hue,kawamon/hue,kawamon/hue,kawamon/hue,kawamon/hue,cloudera/hue,todaychi/hue,cloudera/hue,todaychi/hue,kawamon/hue,cloudera/hue,cloudera/hue,cloudera/hue,kawamon/hue,cloudera/hue,todaychi/hue,cloudera/hue,cloudera/hue,todaychi/hue,todaychi/hue,kawamon/hue,kawamon/hue,cloudera/hue,kawamon/hue,cloudera/hue,cloudera/hue,cloudera/hue,cloudera/hue,todaychi/hue