Thank you for the reference Micheal. I discovered a workaround by forcing Curator to not use container parents.
*CuratorFramework.Builder.dontUseContainerParents()* does the trick, at least for *LeaderElection* recipe. Thanks, Gokturk On Wed, Jul 17, 2019, 8:26 PM Michael Han <h...@apache.org> wrote: > In theory, they should be compatible. See backward compatibility section > https://cwiki.apache.org/confluence/display/ZOOKEEPER/ReleaseManagement > > (where Major is 3, Minor is 5 and Minor - 1 is 4, in this case). > > In practice, this one looks incompatible. The Op code 15 in 3.5.5 client > was added in https://issues.apache.org/jira/browse/ZOOKEEPER-1297 which > was > only committed to 3.5, not 3.4... > > On Wed, Jul 17, 2019 at 11:33 AM Göktürk Gezer <gokt...@alluxio.com> > wrote: > > > Gentle Ping! > > I noticed I forgot to mention that we are using java api for zk client. > In > > case it makes a difference. > > > > Thanks, > > Gokturk > > > > > On Jul 12, 2019, at 4:33 PM, Göktürk Gezer <gokt...@alluxio.com> > wrote: > > > > > > Hi Everyone, > > > I recently bumped zookeeper client version to 3.5.5 in order to make > use > > of new constructor with ZKClientConfig. (Via curator 4.2.0) > > > This apparently broke communicating with older ZK server at version > > 3.4.9. Is this expected? > > > > > > Client traces: > > > ClientCnxn - Opening socket connection to server > ReplicationFt-masters-1/ > > 172.31.20.201:2181. Will not attempt to authenticate using SASL (unknown > > error) > > > 2019-07-12 23:20:30,875 INFO ClientCnxn - Socket connection > > established, initiating session, client: /172.31.20.201:50028, server: > > ReplicationFt-masters-1/172.31.20.201:2181 > > > 2019-07-12 23:20:30,876 INFO ClientCnxn - Session establishment > > complete on server ReplicationFt-masters-1/172.31.20.201:2181, sessionid > > = 0x16be87b7d400004, negotiated timeout = 40000 > > > 2019-07-12 23:20:30,876 INFO ConnectionStateManager - State change: > > RECONNECTED > > > 2019-07-12 23:20:30,877 INFO ClientCnxn - Unable to read additional > > data from server sessionid 0x16be87b7d400004, likely server has closed > > socket, closing socket connection and attempting reconnect > > > 2019-07-12 23:20:30,978 INFO ConnectionStateManager - State change: > > SUSPENDED > > > 2019-07-12 23:20:32,724 INFO ClientCnxn - Opening socket connection to > > server ReplicationFt-masters-1/172.31.20.201:2181. Will not attempt to > > authenticate using SASL (unknown error) > > > 2019-07-12 23:20:32,724 INFO ClientCnxn - Socket connection > > established, initiating session, client: /172.31.20.201:50030, server: > > ReplicationFt-masters-1/172.31.20.201:2181 > > > 2019-07-12 23:20:32,725 INFO ClientCnxn - Session establishment > > complete on server ReplicationFt-masters-1/172.31.20.201:2181, sessionid > > = 0x16be87b7d400004, negotiated timeout = 40000 > > > 2019-07-12 23:20:32,725 INFO ConnectionStateManager - State change: > > RECONNECTED > > > 2019-07-12 23:20:32,726 INFO AbstractPrimarySelector - Primary > selector > > transitioning to SECONDARY > > > 2019-07-12 23:20:32,727 INFO ClientCnxn - Unable to read additional > > data from server sessionid 0x16be87b7d400004, likely server has closed > > socket, closing socket connection and attempting reconnect > > > 2019-07-12 23:20:32,827 INFO ConnectionStateManager - State change: > > SUSPENDED > > > 2019-07-12 23:20:34,412 INFO ClientCnxn - Opening socket connection to > > server ReplicationFt-masters-1/172.31.20.201:2181. Will not attempt to > > authenticate using SASL (unknown error) > > > 2019-07-12 23:20:34,412 INFO ClientCnxn - Socket connection > > established, initiating session, client: /172.31.20.201:50032, server: > > ReplicationFt-masters-1/172.31.20.201:2181 > > > 2019-07-12 23:20:34,413 INFO ClientCnxn - Session establishment > > complete on server ReplicationFt-masters-1/172.31.20.201:2181, sessionid > > = 0x16be87b7d400004, negotiated timeout = 40000 > > > 2019-07-12 23:20:34,413 INFO ConnectionStateManager - State change: > > RECONNECTED > > > 2019-07-12 23:20:34,414 INFO ClientCnxn - Unable to read additional > > data from server sessionid 0x16be87b7d400004, likely server has closed > > socket, closing socket connection and attempting reconnect > > > > > > Server traces: > > > 2019-07-12 23:20:56,564 [myid:] - INFO [NIOServerCxn.Factory: > > 0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@192] - Accepted socket > > connection from /172.31.20.201:50092 > > > 2019-07-12 23:20:56,564 [myid:] - INFO [NIOServerCxn.Factory: > > 0.0.0.0/0.0.0.0:2181:ZooKeeperServer@921] - Client attempting to renew > > session 0x16be87b7d400004 at /172.31.20.201:50092 > > > 2019-07-12 23:20:56,565 [myid:] - INFO [NIOServerCxn.Factory: > > 0.0.0.0/0.0.0.0:2181:ZooKeeperServer@673] - Established session > > 0x16be87b7d400004 with negotiated timeout 40000 for client / > > 172.31.20.201:50092 > > > 2019-07-12 23:20:56,566 [myid:] - WARN [NIOServerCxn.Factory: > > 0.0.0.0/0.0.0.0:2181:ZooKeeperServer@735] - Received packet at server of > > unknown type 15 > > > 2019-07-12 23:20:56,566 [myid:] - INFO [NIOServerCxn.Factory: > > 0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1008] - Closed socket connection for > > client /172.31.20.201:50092 which had sessionid 0x16be87b7d400004 > > > 2019-07-12 23:20:56,566 [myid:] - ERROR [SyncThread:0:NIOServerCnxn@178 > ] > > - Unexpected Exception: > > > java.nio.channels.CancelledKeyException > > > at > > sun.nio.ch.SelectionKeyImpl.ensureValid(SelectionKeyImpl.java:73) > > > at > > sun.nio.ch.SelectionKeyImpl.interestOps(SelectionKeyImpl.java:77) > > > at > > > org.apache.zookeeper.server.NIOServerCnxn.sendBuffer(NIOServerCnxn.java:151) > > > at > > > org.apache.zookeeper.server.NIOServerCnxn.sendResponse(NIOServerCnxn.java:1082) > > > at > > > org.apache.zookeeper.server.FinalRequestProcessor.processRequest(FinalRequestProcessor.java:391) > > > at > > > org.apache.zookeeper.server.SyncRequestProcessor.run(SyncRequestProcessor.java:169) > > > 2019-07-12 23:20:57,752 [myid:] - INFO [NIOServerCxn.Factory: > > 0.0.0.0/0.0.0.0:2181:NIOServerCnxnFactory@192] - Accepted socket > > connection from /172.31.20.201:50094 > > > 2019-07-12 23:20:57,753 [myid:] - INFO [NIOServerCxn.Factory: > > 0.0.0.0/0.0.0.0:2181:ZooKeeperServer@921] - Client attempting to renew > > session 0x16be87b7d400004 at /172.31.20.201:50094 > > > 2019-07-12 23:20:57,753 [myid:] - INFO [NIOServerCxn.Factory: > > 0.0.0.0/0.0.0.0:2181:ZooKeeperServer@673] - Established session > > 0x16be87b7d400004 with negotiated timeout 40000 for client / > > 172.31.20.201:50094 > > > 2019-07-12 23:20:57,754 [myid:] - WARN [NIOServerCxn.Factory: > > 0.0.0.0/0.0.0.0:2181:ZooKeeperServer@735] - Received packet at server of > > unknown type 15 > > > 2019-07-12 23:20:57,755 [myid:] - INFO [NIOServerCxn.Factory: > > 0.0.0.0/0.0.0.0:2181:NIOServerCnxn@1008] - Closed socket connection for > > client /172.31.20.201:50094 which had sessionid 0x16be87b7d400004 > > > > > > > > > Thanks, > > > Gokturk > > > > >
