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https://issues.apache.org/jira/browse/ZOOKEEPER-513?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12765680#action_12765680
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Patrick Hunt commented on ZOOKEEPER-513:
----------------------------------------

are you still seeing this problem? If so please provide the logs etc... 
detailed in the previous comment.

if it's resolved please close, also it would be interesting to know how it was 
resolved.

> C client disconnect with stand-alone server abnormally
> ------------------------------------------------------
>
>                 Key: ZOOKEEPER-513
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-513
>             Project: Zookeeper
>          Issue Type: Bug
>          Components: c client
>    Affects Versions: 3.2.0
>         Environment: Linux 2.6.9-52bs #2 SMP Fri Jan 26 13:34:38 CST 2007 
> x86_64 x86_64 x86_64 GNU/Linux
> Jdk: 1.6.0_14
>            Reporter: Qian Ye
>             Fix For: 3.3.0
>
>
> The client which created an ephemeral node at the zookeeper server, printed 
> the following log
> WARNING: 08-20 03:09:20:  auto * 182894118176 
> [logid:][reqip:][auto_exchanger_zk_basic.cpp:605]get children 
> fail.[/forum/elect_nodes][-7][operation timeout]
> and the Zookeeper client printed the following log (the log level is INFO)
> 2009-08-19 21:36:18,067:3813(0x9556c520):zoo_i...@log_env@545: Client 
> environment:zookeeper.version=zookeeper C client 3.2.0
>     606 2009-08-19 21:36:18,067:3813(0x9556c520):zoo_i...@log_env@549: Client 
> environment:host.name=jx-ziyuan-test00.jx.baidu.com
>     607 2009-08-19 21:36:18,068:3813(0x9556c520):zoo_i...@log_env@557: Client 
> environments.name=Linux
>     608 2009-08-19 21:36:18,068:3813(0x9556c520):zoo_i...@log_env@558: Client 
> environments.arch=2.6.9-52bs
>     609 2009-08-19 21:36:18,068:3813(0x9556c520):zoo_i...@log_env@559: Client 
> environments.version=#2 SMP Fri Jan 26 13:34:38 CST 2007
>     610 2009-08-19 21:36:18,068:3813(0x9556c520):zoo_i...@log_env@567: Client 
> environment:user.name=club
>     611 2009-08-19 21:36:18,068:3813(0x9556c520):zoo_i...@log_env@577: Client 
> environment:user.home=/home/club
>     612 2009-08-19 21:36:18,068:3813(0x9556c520):zoo_i...@log_env@589: Client 
> environment:user.dir=/home/club/user/luhongbo/auto-exchanger
>     613 2009-08-19 21:36:18,068:3813(0x9556c520):zoo_i...@zookeeper_init@613: 
> Initiating client connection, host=127.0.0.1:2181,127.0.0.1:2182 
> sessionTimeout=2000 wa        tcher=0x408c56 sessionId=0x0 
> sessionPasswd=<null> context=(nil) flags=0
>     614 2009-08-19 21:36:18,069:3813(0x41401960):zoo_i...@check_events@1439: 
> initiated connection to server [127.0.0.1:2181]
>     615 2009-08-19 21:36:18,070:3813(0x41401960):zoo_i...@check_events@1484: 
> connected to server [127.0.0.1:2181] with session id=1232c1688a20093
>     616 2009-08-20 
> 02:48:01,780:3813(0x41401960):zoo_w...@zookeeper_interest@1335: Exceeded 
> deadline by 520ms
>     617 2009-08-20 
> 03:08:52,332:3813(0x41401960):zoo_w...@zookeeper_interest@1335: Exceeded 
> deadline by 14ms
>     618 2009-08-20 
> 03:09:04,666:3813(0x41401960):zoo_w...@zookeeper_interest@1335: Exceeded 
> deadline by 48ms
>     619 2009-08-20 
> 03:09:09,733:3813(0x41401960):zoo_w...@zookeeper_interest@1335: Exceeded 
> deadline by 24ms
>     620 2009-08-20 
> 03:09:20,289:3813(0x41401960):zoo_w...@zookeeper_interest@1335: Exceeded 
> deadline by 264ms
>     621 2009-08-20 
> 03:09:20,295:3813(0x41401960):zoo_er...@handle_socket_error_msg@1388: Socket 
> [127.0.0.1:2181] zk retcode=-7, errno=110(Connection timed out): conn        
> ection timed out (exceeded timeout by 264ms)
>     622 2009-08-20 
> 03:09:20,309:3813(0x41401960):zoo_w...@zookeeper_interest@1335: Exceeded 
> deadline by 284ms
>     623 2009-08-20 
> 03:09:20,309:3813(0x41401960):zoo_er...@handle_socket_error_msg@1433: Socket 
> [127.0.0.1:2182] zk retcode=-4, errno=111(Connection refused): server         
> refused to accept the client
>     624 2009-08-20 03:09:20,353:3813(0x41401960):zoo_i...@check_events@1439: 
> initiated connection to server [127.0.0.1:2181]
>     625 2009-08-20 03:09:20,552:3813(0x41401960):zoo_i...@check_events@1484: 
> connected to server [127.0.0.1:2181] with session id=1232c1688a20093
> The problem happened at 03:09:20, it seems that the zookeeper refused to 
> accept the client, and I don't know why.
> the zoo.cfg is like:
> # The number of milliseconds of each tick
> tickTime=500
> # The number of ticks that the initial 
> # synchronization phase can take
> initLimit=10
> # The number of ticks that can pass between 
> # sending a request and getting an acknowledgement
> syncLimit=5
> # the directory where the snapshot is stored.
> dataDir=./data/
> # the port at which the clients will connect
> clientPort=2181
> the C client used multi-thread library, and the session timeout is set to 
> 2000 when the zookeeper handler was initialized.

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