[LENS-1459] Time union candidate creation phase is creating a combination with redundant candidates

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: cube
• Assignee: Rajat Khandelwal
• Reporter: Rajat Khandelwal
• Created: 16/Aug/17 10:54
• Updated: 06/Feb/18 05:53
• Resolved: 16/Aug/17 12:17

Description

After the optimization in LENS-1452, Combinations as mentioned in the jira summary can get created. Say the time range queried is [f, t), Candidate a and b can cover [f, m) and candidate c can cover [m, t). Say a Union candidate is represented as U(cand1, cand2,...). Then the code creates U(a,b,c), U(a,c) and U(b,c). If U(a,b,c) is picked as final candidate, then one of a or b doesn't resolve partitions and time_range_in clause is left as it is for that.