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b1dd1876e5
We make multiple attempts to mark a node as alive. We do that be sending an EchoMessage, and marking the node as alive upon receiving a successful answer. In case there's a network partition and the nodes can't reach each other, multiple messages may be delivered and processed. We can avoid processing duplicate EchoMessage replies by checking whether we had already marked the node as alive. Fixes #1184 Signed-off-by: Duarte Nunes <duarte@scylladb.com> Message-Id: <20180428191942.31990-1-duarte@scylladb.com>