[FLINK-16191] Improve error message on Windows when RocksDB Paths are too long

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.10.0
• Fix Version/s: 1.10.1, 1.11.0
• Component/s: Runtime / State Backends
• Labels: pull-request-available
• Assignee: Stephan Ewen
• Reporter: Stephan Ewen
• Created: 20/Feb/20 15:25
• Updated: 21/Feb/20 14:03
• Resolved: 20/Feb/20 18:32

Description

Paths on Windows have a length limit by default (247 chars).
If RocksDB tries to open a longer path, it throws a misleading exception (directory not found).

We can check for this situation and improve the error message.

Issue Links

• links to: GitHub Pull Request #11163