[SPARK-18498] Clean up HDFSMetadataLog API for better testing

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.1
• Fix Version/s: 2.1.0
• Component/s: SQL, Structured Streaming
• Labels: test
• Target Version/s: 2.1.0
• Flags: Important
• Assignee: Tyson Condie
• Reporter: Tyson Condie
• Shepherd: Michael Armbrust
• Due: 25/Nov/16
• Created: 18/Nov/16 01:23
• Updated: 01/Dec/16 16:42
• Resolved: 29/Nov/16 20:38

Description

HDFSMetadataLog current conflates metadata log serialization and file writes. The goal is to separate these two steps to enable more thorough testing.

Issue Links

• links to: [Github] Pull Request #15924 (tcondie)