Viraj Jasani created PHOENIX-7664:
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Summary: Remove EmptyColumnOnlyFilter and FirstKeyOnlyFilter for
CDC scanners
Key: PHOENIX-7664
URL: https://issues.apache.org/jira/browse/PHOENIX-7664
Project: Phoenix
Issue Type: Bug
Reporter: Viraj Jasani
CDC Scanners like other Global index scanners attempt to remove
EmptyColumnOnlyFilter and FirstKeyOnlyFilter from the scan, however it is not
enough when EmptyColumnOnlyFilter or FirstKeyOnlyFilter is used with other
filters e.g. PageFilter with LIMIT.
For CDC queries, the user initiated upsert and delete statements do not face
any issues as the scan on the uncovered index is only expected to retrieve
empty column cell. However, it does not work when we need to retrieve more
cells than just empty column e.g. "_CDC_IMG_" column cell should be returned by
the delegate scanner for TTL expired CDC events.
The purpose of this Jira is to remove the filters even when they are used in
combination with others.
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