[
https://issues.apache.org/jira/browse/HDFS-4720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13637525#comment-13637525
]
Yu Li commented on HDFS-4720:
-----------------------------
Checking the source in trunk, the "RemoteException didn't include the real
exception class in its toString method" issue has been resolved in HADOOP-7560,
so the attached patch for trunk only focus on the WebhdfsFileSystem part.
> Misleading warning message in WebhdfsFileSystem when trying to check whether
> path exist using webhdfs url
> ---------------------------------------------------------------------------------------------------------
>
> Key: HDFS-4720
> URL: https://issues.apache.org/jira/browse/HDFS-4720
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: webhdfs
> Affects Versions: 1.1.1, 1.1.2
> Reporter: Yu Li
> Assignee: Yu Li
> Priority: Minor
> Attachments: HDFS-4720-trunk.patch
>
>
> When we trying to check whether the target path exists in HDFS through
> webhdfs, if the given path to check doesn't exist, we will always observe
> warning message like:
> ===========================================================
> 13/04/21 04:38:01 WARN web.WebHdfsFileSystem: Original exception is
> org.apache.hadoop.ipc.RemoteException: user = biadmin, proxyUser = null, path
> = /testWebhdfs
> at
> org.apache.hadoop.hdfs.web.JsonUtil.toRemoteException(JsonUtil.java:114)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:294)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.access$500(WebHdfsFileSystem.java:103)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$Runner.getResponse(WebHdfsFileSystem.java:552)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$Runner.run(WebHdfsFileSystem.java:473)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.run(WebHdfsFileSystem.java:404)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getHdfsFileStatus(WebHdfsFileSystem.java:573)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getFileStatus(WebHdfsFileSystem.java:584)
> at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:768)
> ===========================================================
> while actually FileNotFoundException should be expected when the operation is
> GETFILESTATUS and target path doesn't exist. The fact that RemoteException
> didn't include the real exception class(FileNotFoundException) in its
> toString method even make the message more misleading, since from the message
> user won't know what the warning is about
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
