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https://issues.apache.org/jira/browse/HDFS-874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12797376#action_12797376
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Allen Wittenauer commented on HDFS-874:
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I bet this is the issue I've seen here as well. I was attempting to switch
from blah.corp to blah.fqdn and lots of weirdness happened, especially with Pig.
> TestHDFSFileContextMainOperations fails on weirdly configured DNS hosts
> -----------------------------------------------------------------------
>
> Key: HDFS-874
> URL: https://issues.apache.org/jira/browse/HDFS-874
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: hdfs client, test
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
>
> On an internal build machine I see exceptions like this:
> java.lang.IllegalArgumentException: Wrong FS:
> hdfs://localhost:47262/data/1/scratch/patchqueue/patch-worker-20518/patch_21/svnrepo/build/test/data/test/test/testRenameWithQuota/srcdir,
> expected: hdfs://localhost.localdomain:47262
> "hostname" and "hostname -f" both show the machine's FQDN (not localhost).
> /etc/hosts is stock after CentOS 5 install. "host 127.0.0.1" reverses to
> "localhost"
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