Prefer to throw Unavailable rather than Timeout -----------------------------------------------
Key: CASSANDRA-1988 URL: https://issues.apache.org/jira/browse/CASSANDRA-1988 Project: Cassandra Issue Type: Improvement Components: API Reporter: Stu Hood Fix For: 0.8 When a node is unreachable, but is not yet being reported dead by gossip, messages are enqueued in the messaging service to be sent when the node becomes available again (on the assumption that the connection dropped temporarily). Higher up in the client layer, before sending messages to other nodes, we check that they are alive according to gossip, and fail fast with UnavailableException if they are not (CASSANDRA-1803). If we send messages to nodes that are not yet being reported dead, the messages sit in queue, and time out rather than being sent: this results in the client request failing with a TimeoutException. If we differentiate between messages that were never sent (aka, are still queued in the MessagingService at the end of the timeout), and messages that were sent but didn't get a response, we can properly throw UnavailableException in the former case. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.