On 25 April 2014 11:18, Raúl Gutiérrez Segalés <[email protected]> wrote:
> On 25 April 2014 10:15, Yan Xu <[email protected]> wrote: > >> Hi zookeeper-user, >> >> When I was triaging an issue with my ZK wrapper I think I found that >> during >> disconnection ZK client has failed to deliver the session event to the >> watcher (but logged it). >> >> The log shows: >> >> 2014-04-23 23:50:30,324:990(0x7f75d4ba9940):ZOO_INFO@check_events@1703: >> initiated connection to server [<...>:2181] >> 2014-04-23 23:50:31,603:990(0x7f75d4ba9940):ZOO_INFO@check_events@1750: >> session establishment complete on server [<...>:2181], >> sessionId=0x2456db1b7d32534, negotiated timeout=10000 >> ... >> 2014-04-23 >> 23:50:38,925:990(0x7f75d4ba9940):ZOO_ERROR@handle_socket_error_msg@1643: >> Socket [<...>:2181] zk retcode=-7, errno=110(Connection timed out): >> connection to <...>:2181 timed out (exceeded timeout by 636ms) >> 2014-04-23 23:50:38,925:990(0x7f75d4ba9940):ZOO_WARN@zookeeper_interest >> @1557: >> Exceeded deadline by 1842ms >> 2014-04-23 23:50:38,925:990(0x7f75d4ba9940):ZOO_INFO@check_events@1703: >> initiated connection to server [<...>:2181] >> 2014-04-23 23:50:38,927:990(0x7f75d4ba9940):ZOO_INFO@check_events@1750: >> session establishment complete on server [<...>:2181], >> sessionId=0x2456db1b7d32534, negotiated timeout=10000 >> > >> which indicates that ZK client state transitioned from CONNECTED -> >> CONNECTING -> CONNECTED. >> >> But my wrapper code was expecting a watcher event with ZOO_SESSION_EVENT & >> ZOO_CONNECTING_STATE but never got one. >> The events for the CONNECTED state before and after the disconnection were >> delivered. >> >> > Was auth performed in the missing parts of the log? If so I guess you > could take the first branch here: > > > https://github.com/apache/zookeeper/blob/branch-3.4/src/c/src/zookeeper.c#L1224 > > thus not missing the PROCESS_SESSION_EVENT(zh, ZOO_CONNECTING_STATE) call. > Meant "thus missing". Lack of coffee :-) I wonder if this could happen when you have an AUTH packet in-flight. -rgs
