coolderli opened a new issue #2947:
URL: https://github.com/apache/iceberg/issues/2947


   I am in Beijing China (UTC+8). When  I create an iceberg table with 
hours(date) partition, I got the wrong directory name.
   
   There is what I did.
   
   My table is partition by hours(date_time):
   ```
   spark-sql> desc test_timestamp;
   id   string  
   date_time    timestamp       
                
   # Partitioning               
   Part 0       hours(date_time)
   ```
   
   And then I insert a record using spark:
   ```
   spark-sql> insert into test_timestamp values (1, CURRENT_TIMESTAMP());
   Time taken: 106.969 seconds
   spark-sql>  select * from test_timestamp;
   1    2021-08-06 12:54:55.786
   ```
   
   And I found the partition name is wrong:
   
![image](https://user-images.githubusercontent.com/38486782/128462724-0829a687-9c2a-4986-b1da-e36fc325d958.png)
   
   I think the current name is `date_hour=2021-08-06-12`.
   Is there anything wrong with my operation? When I use Flink, I came to the 
same problem.


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