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https://issues.apache.org/jira/browse/HDFS-1150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12893023#action_12893023
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Jakob Homan commented on HDFS-1150:
-----------------------------------
bq. A warning makes sense, but it seems to me that it should only throw the RTE
when the DN is configured on a priveleged port and not run with
SecureResources.
It's simpler to have all the datanodes in a secure cluster running via jsvc.
For the trunk patch, the warning about higher ports will actually most likely
be an exception, as it was in earlier versions of the patch. This behavior was
left as a warning on 20 to help the transition by Ops to give them time to get
the lower ports opened. Having a datanode refuse to start in a secure cluster
if not running under jsvc is the easiest path to not accidentally getting one
running without it; the current behavior is fine.
> Verify datanodes' identities to clients in secure clusters
> ----------------------------------------------------------
>
> Key: HDFS-1150
> URL: https://issues.apache.org/jira/browse/HDFS-1150
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: data-node
> Affects Versions: 0.22.0
> Reporter: Jakob Homan
> Assignee: Jakob Homan
> Attachments: commons-daemon-1.0.2-src.tar.gz,
> HDFS-1150-BF-Y20-LOG-DIRS-2.patch, HDFS-1150-BF-Y20-LOG-DIRS.patch,
> HDFS-1150-BF1-Y20.patch, hdfs-1150-bugfix-1.1.patch,
> hdfs-1150-bugfix-1.2.patch, hdfs-1150-bugfix-1.patch,
> HDFS-1150-Y20-BetterJsvcHandling.patch, HDFS-1150-y20.build-script.patch,
> HDFS-1150-Y20S-ready-5.patch, HDFS-1150-Y20S-ready-6.patch,
> HDFS-1150-Y20S-ready-7.patch, HDFS-1150-Y20S-ready-8.patch,
> HDFS-1150-Y20S-Rough-2.patch, HDFS-1150-Y20S-Rough-3.patch,
> HDFS-1150-Y20S-Rough-4.patch, HDFS-1150-Y20S-Rough.txt
>
>
> Currently we use block access tokens to allow datanodes to verify clients'
> identities, however we don't have a way for clients to verify the
> authenticity of the datanodes themselves.
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