Devaraj Das created PHOENIX-2221:
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Summary: 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
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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