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https://issues.apache.org/jira/browse/CASSANDRA-1563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12917801#action_12917801
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Jonathan Ellis commented on CASSANDRA-1563:
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we don't support changing from Super<->Non, so that's ok.
Not sure how we can handle default_validation_class and strategy_opts. Does
Thrift/java distinguish between a null from being optional, and a deliberately
set null? (I'm thinking of the isset methods here.)
> system_update_column_family() sets absent values to 0
> -----------------------------------------------------
>
> Key: CASSANDRA-1563
> URL: https://issues.apache.org/jira/browse/CASSANDRA-1563
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 0.7 beta 1
> Reporter: Tyler L. Hobbs
> Assignee: Jon Hermes
> Attachments: reproduce.txt
>
>
> When system_update_keyspace() is supplied with a CfDef that does not have,
> for example, min_compaction_threshold or gc_grace_seconds, it sets them to
> zero. I would expect them to be unchanged, instead.
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