[HIVE-17939] Bucket map join not being selected when bucketed tables is missing bucket files

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0
• Assignee: Deepak Jaiswal
• Reporter: Deepak Jaiswal
• Created: 30/Oct/17 19:12
• Updated: 22/May/18 23:12
• Resolved: 03/Nov/17 18:06

Description

Looks like the following logic kicks in during OpTraitsRulesProcFactory.TableScanRule.checkBucketedTable(), which prevents the table from being considered a proper bucketed table:
// The number of files for the table should be same as number of
// buckets.
if (fileNames.size() != 0 && fileNames.size() != numBuckets)

{ return false; }

Issue Links

• links to: RB