[IMPALA-621] Analysis of FunctionCallExpr is slow.

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 1.2
• Fix Version/s: Impala 1.2
• Assignee: Nong Li
• Reporter: Alexander Behm
• Created: 13/Oct/13 06:19
• Updated: 15/Oct/13 23:16
• Resolved: 15/Oct/13 23:16

Description

It seems that analyzing function-call exprs is very slow compared to other exprs.

For example, analyzing nested function-call exprs such as:

lower(lower(lower(lower(...

with 2000 levels of nesting ran for over 5 minutes before I aborted the test. The analysis made progress, only very slowly.