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https://issues.apache.org/jira/browse/HDFS-3509?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13421402#comment-13421402
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Daryn Sharp commented on HDFS-3509:
-----------------------------------
We need to test this patch in conjunction with my HDFS-3553 change. Since I
don't have a working SPNEGO cluster as my disposal, could you please test them?
Also, I think this change should go into 1.x too.
> WebHdfsFilesystem does not work within a proxyuser doAs call in secure mode
> ---------------------------------------------------------------------------
>
> Key: HDFS-3509
> URL: https://issues.apache.org/jira/browse/HDFS-3509
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.0.0-alpha
> Reporter: Alejandro Abdelnur
> Assignee: Alejandro Abdelnur
> Priority: Critical
> Attachments: HDFS-3509-branch1.patch, HDFS-3509.patch
>
>
> It does not find kerberos credentials in the context (the UGI is logged in
> from a keytab) and it fails with the following trace:
> {code}
> java.lang.IllegalStateException: unknown char '<'(60) in
> org.mortbay.util.ajax.JSON$ReaderSource@23245e75
> at org.mortbay.util.ajax.JSON.handleUnknown(JSON.java:788)
> at org.mortbay.util.ajax.JSON.parse(JSON.java:777)
> at org.mortbay.util.ajax.JSON.parse(JSON.java:603)
> at org.mortbay.util.ajax.JSON.parse(JSON.java:183)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.jsonParse(WebHdfsFileSystem.java:259)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:268)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.run(WebHdfsFileSystem.java:427)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getDelegationToken(WebHdfsFileSystem.java:722)
> {code}
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