Jakob Homan created HDFS-8542:
---------------------------------
Summary: 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
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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