smiklosovic commented on code in PR #2376:
URL: https://github.com/apache/cassandra/pull/2376#discussion_r1208608695
##########
src/java/org/apache/cassandra/gms/Gossiper.java:
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@@ -1299,14 +1304,39 @@ void notifyFailureDetector(InetAddressAndPort endpoint,
EndpointState remoteEndp
private void markAlive(final InetAddressAndPort addr, final EndpointState
localState)
{
+ if (inflightEcho.contains(addr))
+ {
+ return;
+ }
+ inflightEcho.add(addr);
+
localState.markDead();
Message<NoPayload> echoMessage = Message.out(ECHO_REQ, noPayload);
logger.trace("Sending ECHO_REQ to {}", addr);
- RequestCallback echoHandler = msg ->
+ RequestCallback echoHandler = new RequestCallback()
{
- // force processing of the echo response onto the gossip stage, as
it comes in on the REQUEST_RESPONSE stage
- runInGossipStageBlocking(() -> realMarkAlive(addr, localState));
+ @Override
+ public void onResponse(Message msg)
+ {
+ // force processing of the echo response onto the gossip
stage, as it comes in on the REQUEST_RESPONSE stage
+ runInGossipStageBlocking(() -> {
+ realMarkAlive(addr, localState);
+ inflightEcho.remove(addr);
Review Comment:
@grom358 what happens when `realMarkAlive` throws an exception? (it might
happen if you check closely). Is it guaranteed that exception thrown in
`realMarkAlive` will invoke `onFailure`?
How I understand it is that `onResponse` will be invoked when we have acutal
answer from other node, if we do not or there is a failure, `onFailure` is
invoked. But does it mean that when we get a response and this method is
called, when it fails, onFailure is invoked too?
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