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From "Stefania (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-12705) Add column definition kind to system schema dropped columns
Date Thu, 29 Sep 2016 00:45:21 GMT


Stefania commented on CASSANDRA-12705:

Thanks for the explanation. Then [this branch|]
is ready for review.

I will rebase and run CI once trunk is ready for 4.0.

> Add column definition kind to system schema dropped columns
> -----------------------------------------------------------
>                 Key: CASSANDRA-12705
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Distributed Metadata
>            Reporter: Stefania
>             Fix For: 4.0
> Both regular and static columns can currently be dropped by users, but this information
is currently not stored in {{SchemaKeyspace.DroppedColumns}}. As a consequence, {{CFMetadata.getDroppedColumnDefinition}}
returns a regular column and this has caused problems such as CASSANDRA-12582.
> We should add the column kind to {{SchemaKeyspace.DroppedColumns}} so that {{CFMetadata.getDroppedColumnDefinition}}
can create the correct column definition. However, altering schema tables would cause inter-node
communication failures during a rolling upgrade, see CASSANDRA-12236. Therefore we should
wait for a full schema migration when upgrading to the next major version.

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