[HIVE-11802] Float-point numbers are displayed with different precision in Beeline/JDBC

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.1
• Fix Version/s: 1.2.2, 1.3.0, 2.0.0
• Assignee: lijp
• Reporter: Sergio Peña
• Created: 11/Sep/15 18:40
• Updated: 22/Jun/16 23:41
• Resolved: 15/Sep/15 15:49

Description

When inserting float-point numbers to a table, the values displayed on beeline or jdbc are with different precision.

How to reproduce:

0: jdbc:hive2://localhost:10000> create table decimals (f float, af array<float>, d double, ad array<double>) stored as parquet;
No rows affected (0.294 seconds)

0: jdbc:hive2://localhost:10000> insert into table decimals select 1.10058, array(cast(1.10058 as float)), 2.0133, array(2.0133) from dummy limit 1;
...
No rows affected (20.089 seconds)

0: jdbc:hive2://localhost:10000> select f, af, af[0], d, ad[0] from decimals;
+---------------------+------------+---------------------+---------+---------+--+
|          f          |     af     |         _c2         |    d    |   _c4   |
+---------------------+------------+---------------------+---------+---------+--+
| 1.1005799770355225  | [1.10058]  | 1.1005799770355225  | 2.0133  | 2.0133  |
+---------------------+------------+---------------------+---------+---------+--+

When displaying arrays, the values are displayed correctly, but if I print a specific element, it is then displayed with more decimal positions.

Issue Links

• relates to: HIVE-11832 HIVE-11802 breaks compilation in JDK 8