[SPARK-9069] Remove DecimalType unlimited precision/scale support

• Type: Sub-task
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 1.5.0
• Component/s: SQL
• Target Version/s: 1.5.0
• Sprint: Spark 1.5 release
• Assignee: Davies Liu
• Reporter: Davies Liu
• Created: 15/Jul/15 17:06
• Updated: 26/Jul/15 07:28
• Resolved: 24/Jul/15 07:22

Description

We should remove DecimalType.Unlimited, because BigDecimal does not really support unlimited precision, especially for division.

We can have maximum precision as 38 (to match with Hive 0.13+). The default precision and scale could be (38, 18).

Issue Links

• is related to: SPARK-9356 Remove the internal use of DecimalType.Unlimited
• links to: [Github] Pull Request #7605 (davies)
• links to: [Github] Pull Request #7634 (davies)