Github user jihoonson commented on the pull request:
https://github.com/apache/tajo/pull/618#issuecomment-118793127
@blrunner, I have some more comments as follows.
* The error message should be improved when the given column is not a
partition key. Here is an example.
```
default> alter table partitioned_nation add partition (n_comment=1,
n_nationkey=2) location
'hdfs://localhost:7020/tajo/warehouse/default/partitioned_nation/col1=test/col2=2';
ERROR: n_comment
```
* I wonder that what will happen when an ```add partition``` statement is
executed with the already existing location as follows.
* The ```add partition``` statement does not create the full path of
partition as follows.
```
default> alter table partitioned_nation add partition (n_regionkey=1,
n_nationkey=2) location
'hdfs://localhost:7020/tajo/warehouse/default/partitioned_nation/col1=test/col2=2';
OK
default> \dfs -ls
hdfs://localhost:7020/tajo/warehouse/default/partitioned_nation/col1=test
default>
```
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