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https://issues.apache.org/jira/browse/PHOENIX-6878?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Istvan Toth resolved PHOENIX-6878.
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Resolution: Invalid
Further testing confirmed that the slowness was caused by PHOENIX-6395.
We were not able to confirm that the PHOENIX-4178 degrades performance.
> Upserts into tables with ROW_TIMESTAMP are extremely slow
> ---------------------------------------------------------
>
> Key: PHOENIX-6878
> URL: https://issues.apache.org/jira/browse/PHOENIX-6878
> Project: Phoenix
> Issue Type: Bug
> Components: core
> Affects Versions: 5.2.0, 5.1.3
> Reporter: Istvan Toth
> Priority: Minor
>
> PHOENIX-4187 changed upserts into tables with ROW_TIMESTAMP fields to always
> refresh the table cache before executing the mutation.
> This kills non batched write performance for such tables, as the Table
> metadata is re-read for every row.
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