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From "Raul Gutierrez Segales (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ZOOKEEPER-2171) avoid reverse lookups in QuorumCnxManager
Date Sun, 03 May 2015 23:50:07 GMT

    [ https://issues.apache.org/jira/browse/ZOOKEEPER-2171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14526090#comment-14526090
] 

Raul Gutierrez Segales commented on ZOOKEEPER-2171:
---------------------------------------------------

The failure happens in a test that's not related the updates in the latest patch (i.e.: it
changed some tests, but not ReconfigRecoveryTest.testCurrentObserverIsParticipantInNewConfig
which is the one that failed).

I'll re-kick the process. 

> avoid reverse lookups in QuorumCnxManager
> -----------------------------------------
>
>                 Key: ZOOKEEPER-2171
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2171
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: quorum
>            Reporter: Raul Gutierrez Segales
>            Assignee: Raul Gutierrez Segales
>             Fix For: 3.5.1, 3.6.0
>
>         Attachments: ZOOKEEPER-2171.patch, ZOOKEEPER-2171.patch, ZOOKEEPER-2171.patch,
ZOOKEEPER-2171.patch, ZOOKEEPER-2171.patch
>
>
> Apparently, ZOOKEEPER-107 (via a quick git-blame look) introduced a bunch of getHostName()
calls in QCM. Besides the overhead, these can cause problems when mixed with failing/mis-configured
DNS servers.
> It would be nice to reduce them, if that doesn't affect operational correctness. 



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