[jira] [Updated] (CASSANDRA-13606) Improve handling of 2i initialization failures

["C. Scott Andreas (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-13606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

C. Scott Andreas updated CASSANDRA-13606:
-----------------------------------------
    Component/s: Secondary Indexes

> Improve handling of 2i initialization failures
> ----------------------------------------------
>
>                 Key: CASSANDRA-13606
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-13606
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Secondary Indexes
>            Reporter: Sergio Bossa
>            Assignee: Sergio Bossa
>            Priority: Major
>             Fix For: 4.0
>
>
> 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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