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From "Andor Molnar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-3211) zookeeper单机版本部署,在centos7.0内核中偶现一个较严重问题,Server段默认的60个连接全部变为CLOSE_WATI状态且长时间不消除,导致zk无法正常提供服务
Date Tue, 11 Dec 2018 10:49:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-3211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16716822#comment-16716822
] 

Andor Molnar commented on ZOOKEEPER-3211:
-----------------------------------------

[~yss] [~xiaoed]

I appreciate the effort for reporting this issue, but the official language of this project
is English. Would you please translate the description and comment accordingly?

> zookeeper单机版本部署,在centos7.0内核中偶现一个较严重问题,Server段默认的60个连接全部变为CLOSE_WATI状态且长时间不消除,导致zk无法正常提供服务
> ------------------------------------------------------------------------------------------
>
>                 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.部署配置
> server.1=127.0.0.1:2902:2903
> 2.部署版本
> 内核: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, zklog.rar
>
>   Original Estimate: 72h
>  Remaining Estimate: 72h
>
> 1.部署配置
> server.1=127.0.0.1:2902:2903
> 2.部署版本
> 内核: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.问题现象:不是必现问题,但是复现概率极高,起初是读写超时,大概耗时6s左右,过来几分钟后所有的连接(包括长连接)都成了CLOSE_WAIT状态。
> 4.目前手段:发现连接全部变为close_wait 主动重启zookeeper 服务端



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