[HIVE-5565] Limit Hive decimal type maximum precision and scale to 38

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.13.0
• Fix Version/s: 0.13.0
• Component/s: Types
• Assignee: Xuefu Zhang
• Reporter: Xuefu Zhang
• Created: 16/Oct/13 17:49
• Updated: 18/May/14 07:35
• Resolved: 20/Nov/13 19:58

Description

With HIVE-3976, the maximum precision is set to 65, and maximum scale is to 30. After discussing with several folks in the community, it's determined that 38 as a maximum for both precision and scale are probably sufficient, in addition to the potential performance boost that might become possible to some implementation.

This task is to make such a change. The change is expected to be trivial, but it may impact many test cases. The reason for a separate JIRA is that patch in HIVE-3976 is already in a good shape. Rather than destabilizing a bigger patch, a dedicate patch will facilitates both reviews.

The wiki document will be updated shortly.

Issue Links

• depends upon: HIVE-3976 Support specifying scale and precision with Hive decimal type
• is part of: HIVE-3976 Support specifying scale and precision with Hive decimal type
• is related to: HIVE-4271 Limit precision of decimal type
• is related to: HIVE-4320 Consider extending max limit for precision to 38
• is related to: HIVE-5814 Add DATE, TIMESTAMP, DECIMAL, CHAR, VARCHAR types support in HCat
• is related to: HIVE-2693 Add DECIMAL data type
• links to: https://reviews.apache.org/r/15588/