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https://issues.apache.org/jira/browse/CASSANDRA-3919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13627390#comment-13627390
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Jonathan Ellis commented on CASSANDRA-3919:
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I guess "last component" is basically trying to say "the user-visible cql
column name?"
Kind of surprised that we haven't needed that code before, but I guess it
works. :)
> Dropping a column should do more than just remove the definition
> ----------------------------------------------------------------
>
> Key: CASSANDRA-3919
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3919
> Project: Cassandra
> Issue Type: Sub-task
> Components: Core
> Reporter: Jonathan Ellis
> Assignee: Aleksey Yeschenko
> Labels: compaction, cql
> Fix For: 2.0
>
>
> Dropping a column should:
> - immediately make it unavailable for {{SELECT}}, including {{SELECT *}}
> - eventually (i.e., post-compaction) reclaim the space formerly used by that
> column
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