Impala Parquet/stats issue

[hostname:21000] > create table pqtest2 (id string) stored as parquet;
Query: create table pqtest2 (id string) stored as parquet

Fetched 0 row(s) in 0.17s
[hostname:21000] > insert into pqtest2 values 'a';
Query: insert into pqtest2 values 'a'
ERROR: AnalysisException: Syntax error in line 1:
insert into pqtest2 values 'a'
                           ^
Encountered: STRING LITERAL
Expected: (

CAUSED BY: Exception: Syntax error
[hostname:21000] > insert into pqtest2 values ('a');
Query: insert into pqtest2 values ('a')
Inserted 1 row(s) in 1.31s
[hostname:21000] > insert into pqtest2 values ('b');
Query: insert into pqtest2 values ('b')
Inserted 1 row(s) in 0.22s
[hostname:21000] > select * from pqtest2;
Query: select * from pqtest2
+----+
| id |
+----+
| a  |
| b  |
+----+
Fetched 2 row(s) in 0.20s
[hostname:21000] > compute stats pqtest2;
Query: compute stats pqtest2
+-----------------------------------------+
| summary                                 |
+-----------------------------------------+
| Updated 1 partition(s) and 1 column(s). |
+-----------------------------------------+
Fetched 1 row(s) in 1.21s
[hostname:21000] > describe pqtest2;
Query: describe pqtest2
ERROR: AnalysisException: Failed to load metadata for table: default.pqtest2
CAUSED BY: TableLoadingException: Failed to load metadata for table: pqtest2
CAUSED BY: TTransportException: null
[hostname:21000] > show create table pqtest2;
Query: show create table pqtest2
ERROR: AnalysisException: Failed to load metadata for table: default.pqtest2
CAUSED BY: TableLoadingException: Failed to load metadata for table: pqtest2
CAUSED BY: TTransportException: null
[hostname:21000] > drop table pqtest2;
Query: drop table pqtest2
ERROR: AnalysisException: Failed to load metadata for table: default.pqtest2
CAUSED BY: TableLoadingException: Fail