[IMPALA-1042] Exec summary missing scan node in pathological query.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: Impala 1.4
• Fix Version/s: Impala 1.4
• Assignee: Nong Li
• Reporter: Alexander Behm
• Created: 11/Jun/14 22:56
• Updated: 17/Jun/14 16:57
• Resolved: 17/Jun/14 16:57

Description

Query and exec summary:

select * from (values(1)) x union all values(2) union all select int_col from functional.alltypestiny

Operator      #Hosts   Avg Time   Max Time  #Rows  Est. #Rows  Peak Mem  Est. Peak Mem  Detail        
------------------------------------------------------------------------------------------------------
03:EXCHANGE        1  786.297us  786.297us  7.30K       7.30K         0        -1.00 B  UNPARTITIONED 
04:MERGE           1   16.928us   16.928us      1           1  12.00 KB        -1.00 B                
01:MERGE           1    3.926us    3.926us      1           1         0        -1.00 B                

Somehow the scan is missing from the exec summary. This problem may disappear after my union-plan cleanup, but perhaps it's some deeper issue.