Amareshwari Sriramadasu created LENS-197:
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Summary: Allow start and end times for columns in fact tables
Key: LENS-197
URL: https://issues.apache.org/jira/browse/LENS-197
Project: Apache Lens
Issue Type: Improvement
Components: cube
Reporter: Amareshwari Sriramadasu
We can have columns being promoted/demoted from one aggregate fact to other,
with usage of columns in reports.
We need this for the following use cases:
# If field is moved to a lower cost fact: Since the fact is having lower cost
it will be picked up for processing, but if the life of column queried does not
fit in the range queried, a higher level fact should be picked up. If lower
level fact is picked, it would lead to wrong results.
# If field is moved to a higher cost fact, i.e. its life ending in a lower cost
fact. Again, depending on the range queried, either lower or higher level fact
should be picked up. It will be more like optimization for this case.
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