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https://issues.apache.org/jira/browse/CASSANDRA-1563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12917786#action_12917786
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Jonathan Ellis commented on CASSANDRA-1563:
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When given a null value to an optional field it's very clear in my mind that
the "right" thing to do is to leave that field set to the current value. It's
much less work for the user to manually override a field back to default if
necessary, than to populate the entire KsDef/CfDef w/ the current values to
avoid stomping them.
If there are optional fields where null is a valid value, then we have a bug.
Do any such exist?
> 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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