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https://issues.apache.org/jira/browse/PHOENIX-4026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16088347#comment-16088347
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James Taylor commented on PHOENIX-4026:
---------------------------------------
We had an offline discussion and concluded that doing index writes
asynchronously is problematic because we cannot guarantee on a RS crash that
the not yet written index updates are not lost. The data table write would have
succeeded, so the WAL replay that also replays index updates presumably
wouldn't kick in for this case.
> Option to not wait on global mutable index write to complete
> ------------------------------------------------------------
>
> Key: PHOENIX-4026
> URL: https://issues.apache.org/jira/browse/PHOENIX-4026
> Project: Phoenix
> Issue Type: Bug
> Reporter: Samarth Jain
> Attachments: PHOENIX-4026_wip.patch
>
>
> Today, a data table update synchronously waits for the index update to
> complete. While some users may want that kind of strong consistency, some may
> be ok with the call to return once the data table write is done.
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