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From "Philip Thompson (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-12697) cdc column addition still breaks schema migration tasks
Date Fri, 23 Sep 2016 14:03:20 GMT


Philip Thompson commented on CASSANDRA-12697:

It's the same exception, with the error {{Unknown column cdc during deserialization}}? Yeah,
I 100% know why that's happening. When the original ticket for that was first filed, TE was
told it was harmless and to ignore it in the tests. Looks like we never stopped ignoring it.
Should I go ahead and change the tests to remove the exemption for this error?

> cdc column addition still breaks schema migration tasks
> -------------------------------------------------------
>                 Key: CASSANDRA-12697
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Distributed Metadata
>            Reporter: Sylvain Lebresne
>            Assignee: Sylvain Lebresne
>             Fix For: 3.x
> This is a followup of CASSANDRA-12236, which basically didn't fully fix the problem.
Namely, the fix from CASSANDRA-12236 skipped the {{cdc}} column in {{SchemaKeyspace.addTableParamsToRowBuilder()}},
but that method isn't used by schema "migration tasks" ({{MigrationRequestVerbHandler}}, which
instead directly send the content of the full schema table it reads from disk. So we still
end up with a RTE like CASSANDRA-12236. 

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