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From "yeshuangshuang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ZOOKEEPER-3211) zookeeper standalone mode,found a high level bug in kernel of centos7.0 ,zookeeper Server's tcp/ip socket connections(default 60 ) are CLOSE_WAIT ,this lead to zk can't work for client any more
Date Thu, 13 Dec 2018 07:50:00 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-3211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

yeshuangshuang updated ZOOKEEPER-3211:
--------------------------------------
    Attachment: 2018-12-09_133320.png
                2018-12-09_133248.png
                2018-12-09_133229.png
                2018-12-09_133210.png
                2018-12-09_133150.png
                2018-12-09_133131.png
                2018-12-09_133111.png
                2018-12-09_133049.png
                2018-12-09_133017.png
                2018-12-09_132854.png
                2018-12-09_124210.png
                2018-12-09_124131.png

> zookeeper standalone mode,found a high level bug in kernel of centos7.0 ,zookeeper
Server's  tcp/ip socket connections(default 60 ) are CLOSE_WAIT ,this lead to zk can't work
for client any more
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-3211
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3211
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.4.5
>         Environment: 1.zoo.cfg
> server.1=127.0.0.1:2902:2903
> 2.kernel
> kernel:Linux localhost.localdomain 3.10.0-123.el7.x86_64 #1 SMP Tue Feb 12 19:44:50
EST 2019 x86_64 x86_64 x86_64 GNU/Linux
> JDK:
> java version "1.7.0_181"
> OpenJDK Runtime Environment (rhel-2.6.14.5.el7-x86_64 u181-b00)
> OpenJDK 64-Bit Server VM (build 24.181-b00, mixed mode)
> zk: 3.4.5
>            Reporter: yeshuangshuang
>            Priority: Blocker
>             Fix For: 3.4.5
>
>         Attachments: 1.log, 2018-12-09_124131.png, 2018-12-09_124210.png, 2018-12-09_132854.png,
2018-12-09_133017.png, 2018-12-09_133049.png, 2018-12-09_133111.png, 2018-12-09_133131.png,
2018-12-09_133150.png, 2018-12-09_133210.png, 2018-12-09_133229.png, 2018-12-09_133248.png,
2018-12-09_133320.png
>
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> 1.config--zoo.cfg
> server.1=127.0.0.1:2902:2903
> 2.kernel version
> version:Linux localhost.localdomain 3.10.0-123.el7.x86_64 #1 SMP Tue Feb 12 19:44:50
EST 2019 x86_64 x86_64 x86_64 GNU/Linux
> JDK:
> java version "1.7.0_181"
> OpenJDK Runtime Environment (rhel-2.6.14.5.el7-x86_64 u181-b00)
> OpenJDK 64-Bit Server VM (build 24.181-b00, mixed mode)
> zk: 3.4.5
> 3.bug details:
> Occasionally,But the recurrence probability is extremely high. At first, the read-write
timeout takes about 6s, and after a few minutes, all connections (including long ones) will
be CLOSE_WAIT state.
> 4.:Circumvention scheme: it is found that all connections become close_wait to restart
the zookeeper server side actively



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