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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-12952) AlterTableStatement propagates base table and affected MV changes inconsistently
Date Fri, 28 Jul 2017 10:59:01 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-12952?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16104792#comment-16104792
] 

ASF GitHub Bot commented on CASSANDRA-12952:
--------------------------------------------

Github user adelapena closed the pull request at:

    https://github.com/apache/cassandra-dtest/pull/3


> AlterTableStatement propagates base table and affected MV changes inconsistently
> --------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-12952
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12952
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Distributed Metadata, Materialized Views
>            Reporter: Aleksey Yeschenko
>            Assignee: Andrés de la Peña
>             Fix For: 3.0.x, 3.11.x, 4.x
>
>
> In {{AlterTableStatement}}, when renaming columns or changing their types, we also keep
track of all affected MVs - ones that also need column renames or type changes. Then in the
end we announce the migration for the table change, and afterwards, separately, one for each
affected MV.
> This creates a window in which view definitions and base table definition are not in
sync with each other. If a node fails in between receiving those pushes, it's likely to have
startup issues.
> The fix is trivial: table change and affected MV change should be pushed as a single
schema mutation.



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