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https://issues.apache.org/jira/browse/CASSANDRA-8132?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sylvain Lebresne updated CASSANDRA-8132:
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Issue Type: New Feature (was: Sub-task)
Parent: (was: CASSANDRA-9427)
> Save or stream hints to a safe place in node replacement
> --------------------------------------------------------
>
> Key: CASSANDRA-8132
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8132
> Project: Cassandra
> Issue Type: New Feature
> Reporter: Minh Do
> Assignee: Minh Do
> Fix For: 2.1.x
>
>
> Often, we need to replace a node with a new instance in the cloud environment
> where we have all nodes are still alive. To be safe without losing data, we
> usually make sure all hints are gone before we do this operation.
> Replacement means we just want to shutdown C* process on a node and bring up
> another instance to take over that node's token.
> However, if a node to be replaced has a lot of stored hints, its
> HintedHandofManager seems very slow to send the hints to other nodes. In our
> case, we tried to replace a node and had to wait for several days before its
> stored hints are clear out. As mentioned above, we need all hints on this
> node to clear out before we can terminate it and replace it by a new
> instance/machine.
> Since this is not a decommission, I am proposing that we have the same
> hints-streaming mechanism as in the decommission code. Furthermore, there
> needs to be a cmd for NodeTool to trigger this.
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