[SLIDER-1074] slider history json to include schema at top of files

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: Slider 0.90.2
• Component/s: appmaster
• Assignee: Unassigned
• Reporter: Steve Loughran
• Created: 22/Jan/16 22:50
• Updated: 22/Jan/16 22:50

Description

Slider doesn't include the Avro schema when it saves/loads files

It should, provided adding that doesn't break existing code through
-not being able to load existing histories
-after an upgrade/downgrade sequence, not being able to load new histories.

Remember that failure handling in the RH reader is simply "skip that file", there is some implicit recovery, but it will hurt locality.