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https://issues.apache.org/jira/browse/CASSANDRA-13606?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17099849#comment-17099849
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Berenguer Blasi commented on CASSANDRA-13606:
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[~adelapena]
- If I understood correctly your first point, I'll log writable (and queryable
while I am at it) index set
[here|https://github.com/apache/cassandra/pull/570/files#diff-3f2c8994c4ff8748c3faf7e70958520dR658]
and we silently ignore writes to a failed index. +1 on that.
- Correct, I left the 'recovery path' unused as I saw it more as a future
proofing thing than an actual replacement to the rebuild. I am -1 on adding a
{{recover_index}}. What if we add to {{rebuild_index}} a {{recover}} param that
defaults to false? That would be less 'noisy' and backwards compatible etc.
wdyt?
> Improve handling of 2i initialization failures
> ----------------------------------------------
>
> Key: CASSANDRA-13606
> URL: https://issues.apache.org/jira/browse/CASSANDRA-13606
> Project: Cassandra
> Issue Type: Improvement
> Components: Feature/2i Index
> Reporter: Sergio Bossa
> Assignee: Berenguer Blasi
> Priority: Normal
> Fix For: 4.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> CASSANDRA-10130 fixes the 2i build management, but initialization failures
> are still not properly handled, most notably because:
> * Initialization failures make the index non-queryable, but it can still be
> written to.
> * Initialization failures can be recovered via full rebuilds.
> Both points above are probably suboptimal because the initialization logic
> could be more complex than just an index build, hence it shouldn't be made
> recoverable via a simple rebuild, and could cause the index to be fully
> unavailable not just for reads, but for writes as well.
> So, we should better handle initialization failures by:
> * Allowing the index implementation to specify if unavailable for reads,
> writes, or both.
> * Providing a proper method to recover, distinct from index rebuilds.
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