zookeeper-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Yisong Yue (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2847) Cannot bind to client port when reconfig based on old static config
Date Mon, 24 Sep 2018 22:31:00 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16626522#comment-16626522
] 

Yisong Yue commented on ZOOKEEPER-2847:
---------------------------------------

[~hanm] Yes, I'll put up a patch (by that you mean open another issue, right?) to fix
it. Thanks for investigating!

> Cannot bind to client port when reconfig based on old static config
> -------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-2847
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2847
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.5.3, 3.6.0
>            Reporter: Fangmin Lv
>            Assignee: Yisong Yue
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 3.6.0
>
>          Time Spent: 1h 10m
>  Remaining Estimate: 0h
>
> When started the ensemble with old static config that the server string doesn't have
client port, dynamically remove and add the same server from the ensemble will cause that
server cannot bind to client port, and the ZooKeeper server cannot serve client requests anymore.
> From the code, we'll set the clientAddr to null when start up with old static config,
and dynamic config forces to have <client port> part, which will trigger the following
rebind code in QuorumPeer#processReconfig, and cause the address already in used issue.
>     public boolean processReconfig(QuorumVerifier qv, Long suggestedLeaderId, Long zxid,
boolean restartLE) {
>         ...
>         if (myNewQS != null && myNewQS.clientAddr != null
>                 && !myNewQS.clientAddr.equals(oldClientAddr)) {
>             cnxnFactory.reconfigure(myNewQS.clientAddr);
>             updateThreadName();
>         }
>         ...
>     }



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Mime
View raw message