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From "Jaeho Shin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (GIRAPH-904) Giraph can hang when hostnames include uppercase letters
Date Fri, 20 Nov 2015 17:22:11 GMT

    [ https://issues.apache.org/jira/browse/GIRAPH-904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15018368#comment-15018368
] 

Jaeho Shin commented on GIRAPH-904:
-----------------------------------

[~VishalDonderia] You are welcome to take a deeper look into this.  Unfortunately I won't
have free cycles for the next few weeks.

> Giraph can hang when hostnames include uppercase letters
> --------------------------------------------------------
>
>                 Key: GIRAPH-904
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-904
>             Project: Giraph
>          Issue Type: Bug
>          Components: bsp, conf and scripts, zookeeper
>    Affects Versions: 1.1.0
>            Reporter: Jaeho Shin
>            Assignee: Jaeho Shin
>             Fix For: 1.1.0
>
>         Attachments: GIRAPH-904.BspServiceMaster-fix.patch, GIRAPH-904.getHostname-fix.patch,
GIRAPH-904.patch
>
>
> We found that Giraph jobs were consistently hanging if uppercase letters were included
in the DNS (or /etc/hosts) resolved hostnames ({{foo.stanford.edu}} vs. {{foo.Stanford.EDU}}
from our DNS).  Normalizing the hostnames to lower case from {{GiraphConfiguration#getLocalHostname()}}
fixed our problem.



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