[KUDU-3033] Add min/max values for the non-primary key columns in the metadata of rowsets/datablocks - ASF JIRA

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Details

Type: New Feature
Status: Open
Priority: Major
Resolution: Unresolved
Affects Version/s: None
Fix Version/s: None
Component/s: cfile, perf, tablet
Labels:
- performance
- roadmap-candidate

Description

It's possible to add min/max values for the non-primary key columns in the metadata of diskrowset/datablock, and then we can skip decoding/evaluating the unnecessary diskrowset/datablock while scanning. Just like the "compute stats" feature on impala, and the only difference is that kudu supports updates. So, the min/max values should be invalid if the columns that have deltas while scanning.