注意： Impala 3.1版本之后才可以使用ORC格式
Impala官方文档描述：
https://docs.cloudera.com/documentation/enterprise/6/6.1/topics/impala_orc.html#orc
$ impala-shell -i localhost
[localhost:21000] default> CREATE TABLE orc_table (x INT) STORED AS ORC;
[localhost:21000] default> CREATE TABLE orc_clone LIKE some_other_table STORED AS ORC;
[localhost:21000] default> quit;
$ hive
hive> INSERT INTO TABLE orc_table SELECT x FROM some_other_table;
3 Rows loaded to orc_table
Time taken: 4.169 seconds
hive> quit;
$ impala-shell -i localhost
[localhost:21000] default> SELECT * FROM orc_table;
Fetched 0 row(s) in 0.11s
[localhost:21000] default> -- Make Impala recognize the data loaded through Hive;
[localhost:21000] default> REFRESH orc_table;
[localhost:21000] default> SELECT * FROM orc_table;
+---+
| x |
+---+
| 1 |
| 2 |
| 3 |
+---+
Fetched 3 row(s) in 0.11s
