[SPARK-6575] Converted Parquet Metastore tables no longer cache metadata

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.3.0
• Fix Version/s: 1.3.1, 1.4.0
• Component/s: SQL
• Target Version/s: 1.3.1
• Assignee: Cheng Lian
• Reporter: Cheng Lian
• Created: 27/Mar/15 18:54
• Updated: 03/Apr/15 03:23
• Resolved: 03/Apr/15 03:23

Description

Consider a metastore Parquet table that

1. doesn't have schema evolution issue
2. has lots of data files and/or partitions

In this case, driver schema merging can be both slow and unnecessary. Would be good to have a configuration to let the use disable schema merging when converting such a metastore Parquet table.

Issue Links

• links to: [Github] Pull Request #5231 (liancheng)
• links to: [Github] Pull Request #5339 (yhuai)