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Posted to issues@zookeeper.apache.org by "tian (Jira)" <ji...@apache.org> on 2021/11/09 13:04:00 UTC

[jira] [Updated] (ZOOKEEPER-4412) client blocked too long before session timeout

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-4412?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

tian updated ZOOKEEPER-4412:
----------------------------
    Summary: client blocked too long before session timeout  (was: client block too long before session timeout)

> client blocked too long before session timeout
> ----------------------------------------------
>
>                 Key: ZOOKEEPER-4412
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4412
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: java client
>    Affects Versions: 3.4.14
>            Reporter: tian
>            Priority: Critical
>
> set Negotiated session timeout: 40000
> when switch failure, the client did not send suspend event to state listner after 180000 ms
> {code:java}
> // code placeholder
> [10.10.10.2][my-app][2021-11-05 13:55:38.701][ WARN][????][16.195.152:2181)][o.a.z.ClientCnxn                        ] : [][][]Client session timed out, have not heard from server in 204988ms for sessionid 0x405005d85480c3d 
> [10.10.10.2][my-app][2021-10-30 15:55:39.275][ WARN][????][16.195.152:218)][o.a.z.ClientCnxn                        ] : [][][]Unable to reconnect to ZooKeeper service, session 0x405005d85480c3d has expired 
> [10.10.10.2][my-app][2021-10-30 15:55:39.275][ WARN][????][ain-EventThread][o.a.c.ConnectionState                   ] : [][][]Session expired event received{code}
> why after {color:#FF0000}204988ms {color:#172b4d}this client found client session timeout ? socket read timeout = 2/3 * sessiont time out , it  blocked too long to discover network failure. what may cause this scene?{color}{color}



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