c. Read with CL = QUORUM. If read hits node1 and node2/node3, new data
that was written to node1 will be returned.
In this case - N1 will be identified as a discrepancy and the change will
be discarded via read repair
[Naren] How will Cassandra know this is a discrepancy?
Because at Q - only N1
You are missing the point. The coordinator node that is handling the request
won't wait for all the nodes to return their copy/digest of data. It just
wait for Q (RF/2+1) nodes to return. This is the reason I explained two
possible scenarios.
Further, on what basis Cassandra will know that the
thanks Narendra. I read again the wiki quote you pasted below and now it
does make sense. Cassandra's design behavior is to propagate the failed
write if it was ever written successfully to atleast one server. I was
having hard time trying to work around this but I guess I am starting to
think the
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happens to the completed writes on X (W
X) nodes?
Thanks,
Ritesh
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X) nodes?
Thanks,
Ritesh
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