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https://issues.apache.org/jira/browse/HADOOP-10016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13786485#comment-13786485
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Haohui Mai commented on HADOOP-10016:
-------------------------------------
On a insecure cluster, getDelegationToken returns IOException:
{noformat}
$ curl http://localhost:50070/webhdfs/v1/?op=GETDELEGATIONTOKEN
{"RemoteException":{"exception":"IOException","javaClassName":"java.io.IOException","message":"Failed
to get the token for dr.who, user=dr.who"}}
{noformat}
which eventually fails this job. I agree the fact that returning null is not a
valid part of the contract of getDelegationToken(), but there are multiple bugs
in the code right now that hinder distcp running successfully.
> Distcp should support copy from a secure Hadoop 1 cluster to an insecure
> Hadoop 2 cluster
> -----------------------------------------------------------------------------------------
>
> Key: HADOOP-10016
> URL: https://issues.apache.org/jira/browse/HADOOP-10016
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Haohui Mai
> Assignee: Haohui Mai
>
> Distcp should be able to copy from a secure cluster to an insecure cluster.
> This functionality is important for operators to migrate data to a new Hadoop
> installation.
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