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https://issues.apache.org/jira/browse/CASSANDRA-10786?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Philip Thompson updated CASSANDRA-10786:
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Component/s: CQL
> Include hash of result set metadata in prepared statement id
> ------------------------------------------------------------
>
> Key: CASSANDRA-10786
> URL: https://issues.apache.org/jira/browse/CASSANDRA-10786
> Project: Cassandra
> Issue Type: Improvement
> Components: CQL
> Reporter: Olivier Michallat
> Priority: Minor
> Fix For: 3.2
>
>
> This is a follow-up to CASSANDRA-7910, which was about invalidating a
> prepared statement when the table is altered, to force clients to update
> their local copy of the metadata.
> There's still an issue if multiple clients are connected to the same host.
> The first client to execute the query after the cache was invalidated will
> receive an UNPREPARED response, re-prepare, and update its local metadata.
> But other clients might miss it entirely (the MD5 hasn't changed), and they
> will keep using their old metadata.
> One solution that was suggested is to include a hash of the result set
> metadata in the prepared statement id. The old id would become invalid,
> forcing all clients to reprepare.
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