[MESOS-2070] Implement simple slave recovery behavior for fetcher cache

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.23.0
• Component/s: agent, fetcher
• Labels: newbie
• Target Version/s: 0.23.0
• Epic Link: Fetcher Cache
• Sprint: Mesosphere Q1 Sprint 1 - 1/23, Mesosphere Q1 Sprint 2 - 2/6, Mesosphere Q1 Sprint 3 - 2/20, Mesosphere Q1 Sprint 4 - 3/6, Mesosphere Q1 Sprint 5 - 3/20, Mesosphere Q1 Sprint 6 - 4/3, Mesosphere Q1 Sprint 7 - 4/17, Mesosphere Q2 Sprint 8 - 5/1, Mesosphere Q1 Sprint 9 - 5/15, Mesosphere Sprint 10, Mesosphere Sprint 11
• Story Points: 2
• Assignee: Bernd Mathiske
• Reporter: Bernd Mathiske
• Shepherd: Benjamin Hindman
• Created: 11/Nov/14 11:58
• Updated: 02/Jul/15 06:51
• Resolved: 01/Jun/15 13:52

Description

Clean the fetcher cache completely upon slave restart/recovery. This implements correct, albeit not ideal behavior. More efficient schemes that restore knowledge about cached files or even resume downloads can be added later.