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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-12787) KMS SPNEGO sequence does not work with WEBHDFS
Date Fri, 12 Feb 2016 00:08:18 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-12787?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15143745#comment-15143745

Jitendra Nath Pandey commented on HADOOP-12787:

[~xyao], thanks for the patch. I have one suggestion:
{{public DFSClient(URI nameNodeUri, Configuration conf, boolean proxyUser)}}
Instead of passing a boolean, please pass the ugi. The WebHdfsHandler should have the logic
to construct the right UGI.
This will make the constructor more generic.

> KMS SPNEGO sequence does not work with WEBHDFS
> ----------------------------------------------
>                 Key: HADOOP-12787
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12787
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: kms, security
>    Affects Versions: 2.6.3
>            Reporter: Xiaoyu Yao
>            Assignee: Xiaoyu Yao
>         Attachments: HADOOP-12878.00.patch
> This was a follow up of my [comments|https://issues.apache.org/jira/browse/HADOOP-12559?focusedCommentId=15059045&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15059045]
for HADOOP-10698.
> It blocks a delegation token based user (MR) using WEBHDFS to access KMS server for encrypted
files. This might work in many cases before as JDK 7 has been aggressively do SPENGO implicitly.
However, this is not the case in JDK 8 as we have seen many failures when using WEBHDFS with
KMS and HDFS encryption zone.

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