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https://issues.apache.org/jira/browse/PHOENIX-5957?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kadir OZDEMIR updated PHOENIX-5957:
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Attachment: PHOENIX-5957.4.x.001.patch
> Index rebuild should remove old index rows with higher timestamp
> ----------------------------------------------------------------
>
> Key: PHOENIX-5957
> URL: https://issues.apache.org/jira/browse/PHOENIX-5957
> Project: Phoenix
> Issue Type: Improvement
> Affects Versions: 5.0.0, 4.14.3
> Reporter: Kadir OZDEMIR
> Priority: Major
> Attachments: PHOENIX-5957.4.x.001.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> During the upgrade of index tables from the old design to the new design, we
> rebuild the index table rows online. Rebuilding index table rows using the
> new design is supposed to be overwriting the old index rows. Due to a bug in
> the old implementation of the index tool (fixed by PHOENIX-5018), the old
> index row likely have higher timestamps than their data table rows. Since the
> current implementation of the index tool correctly sets the index row
> timestamps using the data table row timestamps, newly rebuilt index rows
> become older versions of the old index rows. So, essentially they do not
> overwrite old index rows. This does not cause correctness issue as the old
> rows are repaired by the read repair feature of the new design but increases
> the number of read repair operations, and thus, causes performance issues.
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