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From Pramod Srinivasan <pra...@juniper.net>
Subject Re: unexpected server response
Date Mon, 25 Apr 2016 19:45:20 GMT
Gentle nudge!

On 4/11/16, 1:08 PM, "Pramod Srinivasan" <pramod@juniper.net> wrote:

>Hi Folks,
>
>I am hitting an error in my C client code and below are the set of
>operations I perform:
>
>  1.  Zookeeper Client connected to Zookeeper server S1 and a new server
>S2 gets added.
>  2.  monitor zookeeper server config at the client and on change of
>server config, call zoo_set_server from the client
>  3.  client can issue operations like zoo_get just after the call to
>zoo_set_servers
>  4.  I can see that the zookeeper thread logs connect to the new server
>just after the zoo_get call
>
>2016-04-11 03:46:50,655:1207(0xf26ffb40):ZOO_INFO@check_events@2345:
>initiated connection to server [128.0.0.5:61728]
>
>2016-04-11 03:46:50,658:1207(0xf26ffb40):ZOO_INFO@check_events@2397:
>session establishment complete on server [128.0.0.5:61728],
>sessionId=0x4000001852c000c, negotiated timeout=20000
>
>  5.  Some times I find errors like below:
>
>2016-04-11 
>03:46:50,662:1207(0xf26ffb40):ZOO_ERROR@handle_socket_error_msg@2923:
>Socket [128.0.0.5:61728] zk retcode=-2, errno=115(Operation now in
>progress): unexpected server response: expected 0x570b82fa, but received
>0x570b82f9
>
>  1.
>zoo_get returns (-2) indicating that
>ZRUNTIMEINCONSISTENCY<http://zookeeper.sourcearchive.com/documentation/3.2
>.2plus-pdfsg3/zookeeper_8h_bb1a0a179f313b2e44ee92369c438a4c.html#bb1a0a179
>f313b2e44ee92369c438a4c9eabb281ab14c74db3aff9ab456fa7fe>
>
>
>What is the issue here? should I be retry the operation zoo_get
>operation? Or should I wait for the zoo_set_server to complete (like wait
>for the connection establishment notification)
>
>Thanks,
>Pramod


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