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https://issues.apache.org/jira/browse/GIRAPH-904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14313853#comment-14313853
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Alessio Arleo commented on GIRAPH-904:
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Hello,
I confirm that the issue is still there: I pulled and compiled yesterday Giraph
1.1.0 and the computation hanged with the following error:
> barrierOnWorkerList: Missing chosen workers [Worker(hostname=virtualmint-h023,
> MRtaskID=1, port=30001)] on superstep -1
> 2015-02-09 20:55:13,590 ERROR org.apache.giraph.master.MasterThread:
> masterThread: Master algorithm failed with IllegalStateException
> java.lang.IllegalStateException: coordinateVertexInputSplits: Worker failed
> during input split (currently not supported)
In this log my hostname is written in only lowercase letters, while it was
actually made up by both uppercase and lowercase letters. Using a hostname with
only lowercase letters managed to solve the problem. I'd suggest the reporter
to reopen the issue.
> 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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