[KUDU-1076] MR input format should accept scan predicates

• Type: New Feature
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: Private Beta
• Component/s: api, client
• Target Version/s: Public beta
• Code Review: http://gerrit.sjc.cloudera.com:8080/#/c/7766/
• Assignee: Jean-Daniel Cryans
• Reporter: Todd Lipcon
• Created: 27/Aug/15 15:15
• Updated: 09/Sep/15 19:26
• Resolved: 09/Sep/15 19:26

Description

For ted.m's demo at hadoop world, we need the ability to attach predicates to the input format. Ideally we'd hook this in with partition pruning as well in the case that the predicates restrict which tablets need to be scanned, but for a first pass, let's just serialize a set of predicates into the input format configuration, and then re-hydrate within the mappers.