[SPARK-8141] Precompute datatypes for partition columns and reuse it

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.0
• Fix Version/s: 1.4.1, 1.5.0
• Component/s: SQL
• Assignee: L. C. Hsieh
• Reporter: L. C. Hsieh
• Created: 06/Jun/15 16:48
• Updated: 07/Jun/15 07:36
• Resolved: 07/Jun/15 07:36

Description

spec.partitionColumns.map(_.dataType) re-runs for each Partition in HadoopFsRelation. When there are many partitions, it costs too much unnecessary time.

Issue Links

• links to: [Github] Pull Request #6687 (viirya)