[IMPALA-1615] DROP INCREMENTAL STATS shouldn't clear the row count for a partition

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: Impala 2.1
• Fix Version/s: Impala 2.2
• Labels: ramp-up
• Assignee: Henry Robinson
• Reporter: Henry Robinson
• Created: 16/Dec/14 22:29
• Updated: 04/Jan/17 23:58
• Resolved: 05/Mar/15 20:31

Description

DROP INCREMENTAL STATS is designed to invalidate the incremental stats state for a particular partition (and therefore to trigger recomputation next time COMPUTE INCREMENTAL STATS is called). It shouldn't actually change the set of statistics available to the planner.

Currently, DROP INCREMENTAL STATS will reset the row count for its partition to -1. Column stats are unchanged. The row count should remain unchanged as well.