Jonathan Ellis created CASSANDRA-5902:
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Summary: Dealing with hints after a topology change
Key: CASSANDRA-5902
URL: https://issues.apache.org/jira/browse/CASSANDRA-5902
Project: Cassandra
Issue Type: Bug
Reporter: Jonathan Ellis
Priority: Minor
Hints are stored and delivered by destination node id. This allows them to
survive IP changes in the target, while making "scan all the hints for a given
destination" an efficient operation. However, we do not detect and handle new
node assuming responsibility for the hinted row via bootstrap before it can be
delivered.
I think we have to take a performance hit in this case -- we need to deliver
such a hint to *all* replicas, since we don't know which is the "new" one.
This happens infrequently enough, however -- requiring first the target node to
be down to create the hint, then the hint owner to be down long enough for the
target to both recover and stream to a new node -- that this should be okay.
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