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From "Carl Yeksigian (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-12443) Remove alter type support
Date Mon, 28 Nov 2016 16:42:59 GMT


Carl Yeksigian commented on CASSANDRA-12443:

After talking offline, [~blerer]'s intended comment was that we just leave the 3.0 CQL version
the same, but include this fix. Since there are knock-on bugs from leaving the alter support
in place, it makes sense for this to go into a bug-fix only version.

So, I've pushed up the 3.0 branch again, and rebased the 3.x and trunk branches:

> Remove alter type support
> -------------------------
>                 Key: CASSANDRA-12443
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Carl Yeksigian
>            Assignee: Carl Yeksigian
>             Fix For: 3.x
> Currently, we allow altering of types. However, because we no longer store the length
for all types anymore, switching from a fixed-width to variable-width type causes issues.
commitlog playback breaking startup, queries currently in flight getting back bad results,
and special casing required to handle the changes. In addition, this would solve CASSANDRA-10309,
as there is no possibility of the types changing while an SSTableReader is open.
> For fixed-length, compatible types, the alter also doesn't add much over a cast, so users
could use that in order to retrieve the altered type.

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