[jira] [Commented] (HDFS-7984) webhdfs:// needs to support provided delegation tokens

["HeeSoo Kim (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HDFS-7984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14972112#comment-14972112 ] 

HeeSoo Kim commented on HDFS-7984:
----------------------------------

Anthony is right. {noformat} HADOOP_TOKEN_FILE_LOCATION {noformat} supports to read delegation token for WebHDFSFileSystem.
However, {noformat} HADOOP_TOKEN_FILE_LOCATION{noformat} is only support one file. ugi can have multiple tokens in credential. This patch supports multiple delegation token files as parameter.
{noformat} -Dhadoop.token.files=filename1,filename2{noformat}

> webhdfs:// needs to support provided delegation tokens
> ------------------------------------------------------
>
>                 Key: HDFS-7984
>                 URL: https://issues.apache.org/jira/browse/HDFS-7984
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 3.0.0
>            Reporter: Allen Wittenauer
>            Assignee: HeeSoo Kim
>            Priority: Blocker
>         Attachments: HDFS-7984.patch
>
>
> When using the webhdfs:// filesystem (especially from distcp), we need the ability to inject a delegation token rather than webhdfs initialize its own.  This would allow for cross-authentication-zone file system accesses.



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