Minh Do created CASSANDRA-8132:
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Summary: 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: Improvement
Components: Core
Reporter: Minh Do
Assignee: Minh Do
Fix For: 2.1.1
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 has a lot of stored hints, HintedHandofManager seems very
slow to play the hints. In our case, we tried to replace a node and had to
wait for several days.
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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