Handle TableExistsException

Author: kovyrin

core/src/main/ruby/shell/commands.rb

@@ -49,6 +49,8 @@ def translate_hbase_exceptions(*args)
       rescue org.apache.hadoop.hbase.regionserver.NoSuchColumnFamilyException
         valid_cols = table(args.first).get_all_columns.map { |c| c + '*' }
         raise "Unknown column family! Valid column names: #{valid_cols.join(", ")}"
+      rescue org.apache.hadoop.hbase.TableExistsException
+        raise "Table already exists: #{args.first}!"
       end
     end
   end