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https://issues.apache.org/jira/browse/PHOENIX-7214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jacob Isaac reassigned PHOENIX-7214:
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Assignee: Jacob Isaac
> Purging expired rows during minor compaction for immutable tables
> -----------------------------------------------------------------
>
> Key: PHOENIX-7214
> URL: https://issues.apache.org/jira/browse/PHOENIX-7214
> Project: Phoenix
> Issue Type: New Feature
> Reporter: Kadir Ozdemir
> Assignee: Jacob Isaac
> Priority: Major
>
> HBase minor compaction does not remove deleted or expired cells since the
> minor compaction works on a subset of HFiles. However, it is safe to remove
> expired rows for immutable tables. For immutable tables, rows are inserted
> but not updated. This means a given row will have only one version.This means
> we can safely remove expired rows during minor compaction using
> CompactionScanner in Phoenix.
> CompactionScanner currently runs only for major compaction. We can introduce
> an new table attribute called MINOR_COMPACT_TTL. Phoenix can run
> CompactionScanner for minor compaction too for the tables with
> MINOR_COMPACT_TTL = TRUE. By doing so, the expired rows will be purged during
> minor compaction for these tables. This will be useful when TTL is less than
> 7 days, say 2 days, as major compaction typically runs only once a week.
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