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https://issues.apache.org/jira/browse/PHOENIX-2221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14954152#comment-14954152
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Alicia Ying Shu commented on PHOENIX-2221:
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> We need not change this code any way if we don't configure anything setting
> PhoenixIndexFailurePolicy as default.
We need the above changes that INDEX_FAILURE_POLICY_CONF_KEY is used in
getFailurePolicy() of IndexWriter. If we did not set it, it would always be
default policy. Readable index failure tests will fail.
>In ReadableIndexFailurePolicy we need not check for the failure policy because
>it's any way ReadableIndexFailurePolicy so directly pass readable state bytes
>without any checks.
The checks in ReadableIndexFailurePolicy are redundant. We can remove those.
> 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
> Attachments: PHOENIX-2221-v1.patch, PHOENIX-2221-v2.patch,
> PHOENIX-2221.patch
>
>
> 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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