Rajat Khandelwal created LENS-1459:
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Summary: Time union candidate creation phase is creating a
combination with redundant candidates
Key: LENS-1459
URL: https://issues.apache.org/jira/browse/LENS-1459
Project: Apache Lens
Issue Type: Bug
Components: cube
Reporter: Rajat Khandelwal
Assignee: Rajat Khandelwal
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.
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