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From "kanaka kumar avvaru (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-8542) WebHDFS getHomeDirectory behavior does not match specification
Date Mon, 22 Jun 2015 14:29:01 GMT

     [ https://issues.apache.org/jira/browse/HDFS-8542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

kanaka kumar avvaru updated HDFS-8542:
--------------------------------------
    Status: Patch Available  (was: Open)

> WebHDFS getHomeDirectory behavior does not match specification
> --------------------------------------------------------------
>
>                 Key: HDFS-8542
>                 URL: https://issues.apache.org/jira/browse/HDFS-8542
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 2.6.0
>            Reporter: Jakob Homan
>            Assignee: kanaka kumar avvaru
>         Attachments: HDFS-8542-00.patch, HDFS-8542-01.patch, HDFS-8542-02.patch
>
>
> Per the [spec|https://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Get_Home_Directory],
WebHDFS provides a REST endpoint for getting the user's home directory:
> {noformat}Submit a HTTP GET request.
> curl -i "http://<HOST>:<PORT>/webhdfs/v1/?op=GETHOMEDIRECTORY"{noformat}
> However, WebHDFSFileSystem.java does not use this, instead building the home [directory
locally|https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/web/WebHdfsFileSystem.java#L271]:
> {code}  /** @return the home directory. */
>   public static String getHomeDirectoryString(final UserGroupInformation ugi) {
>     return "/user/" + ugi.getShortUserName();
>   }
>   @Override
>   public Path getHomeDirectory() {
>     return makeQualified(new Path(getHomeDirectoryString(ugi)));
>   }{code}
> The WebHDFSFileSystem client should call to the REST service to determine the home directory.



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