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From Göktürk Gezer <gokt...@alluxio.com>
Subject Re: Is 3.5.5 client compatible with 3.4.x servers
Date Wed, 17 Jul 2019 18:33:13 GMT
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 <gokturk@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


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