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https://issues.apache.org/jira/browse/PHOENIX-2221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15116264#comment-15116264
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Alicia Ying Shu commented on PHOENIX-2221:
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[~jamestaylor] Rebased my patch v6 on the latest code bases. Verified that the
patch works for
* index cannot be written to when index table was deleted in the test
* index disable timestamp set
* data table invalidated
* next client access pulls over modified data table
* attempts to write are blocked
* reads to table reflect the timestamp at/before indexDisableTimestmp
* re-enable the underlying index table
* partial index rebuild kicks in and writes the missing batch
* index disable timestamp is cleared
* data table invalidated
* next client access pulls over modified data table
* attempts to write are no longer blocked
* index is consistent with data table
> Option to make data regions not writable when index regions are not available
> -----------------------------------------------------------------------------
>
> Key: PHOENIX-2221
> URL: https://issues.apache.org/jira/browse/PHOENIX-2221
> Project: Phoenix
> Issue Type: Improvement
> Reporter: Devaraj Das
> Assignee: Alicia Ying Shu
> Fix For: 4.8.0
>
> Attachments: DelegateIndexFailurePolicy.java, PHOENIX-2221-v1.patch,
> PHOENIX-2221-v2.patch, PHOENIX-2221-v3.patch, PHOENIX-2221-v4.patch,
> PHOENIX-2221-v5.patch, PHOENIX-2221-v6.patch, PHOENIX-2221.patch,
> PHOENIX-2221.wip
>
>
> In one usecase, it was deemed better to not accept writes when the index
> regions are unavailable for any reason (as opposed to disabling the index and
> the queries doing bigger data-table scans).
> The idea is that the index regions are kept consistent with the data regions,
> and when a query runs against the index regions, one can be reasonably sure
> that the query ran with the most recent data in the data regions. When the
> index regions are unavailable, the writes to the data table are rejected.
> Read queries off of the index regions would have deterministic performance
> (and on the other hand if the index is disabled, then the read queries would
> have to go to the data regions until the indexes are rebuilt, and the queries
> would suffer).
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