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From "Jaeho Shin (JIRA)" <j...@apache.org>
Subject [jira] [Created] (GIRAPH-904) Giraph can hang if host name has uppercase letters
Date Fri, 30 May 2014 07:45:02 GMT
Jaeho Shin created GIRAPH-904:
---------------------------------

             Summary: Giraph can hang if host name has 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
             Fix For: 1.1.0
         Attachments: 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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