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https://issues.apache.org/jira/browse/CASSANDRA-11899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksey Yeschenko updated CASSANDRA-11899:
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Summary: Please create a swarm decommission mode (was: Please create a
swarm decommission node)
> Please create a swarm decommission mode
> ---------------------------------------
>
> Key: CASSANDRA-11899
> URL: https://issues.apache.org/jira/browse/CASSANDRA-11899
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Mark Danko
> Priority: Minor
>
> Right now when I remove a node that is up I understand 2 choices.
> nodetool decommission: The current hosts starts sending out data as the only
> source. This takes a long time. The one node you want to remove becomes a
> huge bottle neck (even worse if you want to remove it because it is under
> performing).
> cassandra stop, then nodetool removenode: This lets all other nodes that
> share the keyranges be sources. This runs about 8-16X faster than
> decommission on my system, but this requires me to run with reduced
> redundancy when it happens.
> I think it would be really cool if there was a way to decommission a node
> that is up, and leverage the power of other data sources.
> Request : When you decommission a node all other nodes that share a keyrange
> should also help in being sources for the data that needs to be copied.
> Maybe, with options for how far to get the data/balance of load: old
> behavior, same rack, same dc, other dc (or some default scheme based on
> latency between nodes/racks/dcs).
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