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https://issues.apache.org/jira/browse/CASSANDRA-556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144285#comment-13144285
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Victor Z. Peng commented on CASSANDRA-556:
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It seems the implementation is not very hard, we simply just add more helper
functions that could handle the request to snapshot a subset of columns, since
org.apache.cassandra.db.Table#snapshot is snapshotting columns one by one
already.
One thing's worth discussing is how we support specifying both multi-tables and
multi-columns simultaneously via NodeTool in CLI.
What i propose is we add a '-c' option, which will accept an argument as column
names. Since an option can accept at most on argument, the argument can be
formatted as comma separated string: "-c col1,col2,col3". When -c is absent, we
default it to all columns. Does this sound ok?
> nodeprobe snapshot to support specific column families
> ------------------------------------------------------
>
> Key: CASSANDRA-556
> URL: https://issues.apache.org/jira/browse/CASSANDRA-556
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Reporter: Chris Were
> Priority: Minor
> Labels: lhf
>
> It would be good to support dumping specific column families via nodeprobe
> for backup purposes.
> In my particular case the majority of cassandra data doesn't need to be
> backed up except for a couple of column families containing user settings /
> profiles etc.
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