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https://issues.apache.org/jira/browse/HBASE-28055?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tak-Lon (Stephen) Wu resolved HBASE-28055.
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Resolution: Fixed
pushed to master/4.0.0-alpha-1, branch-3, branch-2, branch-2.5, branch-2.4,
resolving it.
> Performance improvement for scan over several stores.
> ------------------------------------------------------
>
> Key: HBASE-28055
> URL: https://issues.apache.org/jira/browse/HBASE-28055
> Project: HBase
> Issue Type: Bug
> Affects Versions: 3.0.0-alpha-4, 2.5.5
> Reporter: Sergey Soldatov
> Assignee: Sergey Soldatov
> Priority: Major
> Fix For: 2.6.0, 2.4.18, 2.5.6, 3.0.0-beta-1, 4.0.0-alpha-1
>
>
> During the fix of HBASE-19863, an additional check for fake cells that
> trigger reseek was added. It comes that this check produces unnecessary
> reseeks because
> matcher.compareKeyForNextColumn should be used only with indexed keys. Later
> [~larsh] suggested doing a simple check for OLD_TIMESTAMP and it looks like a
> better solution.
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