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From "Andrew Wang (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-9896) WebHDFS API may return invalid JSON
Date Thu, 05 Jan 2017 21:51:58 GMT

     [ https://issues.apache.org/jira/browse/HDFS-9896?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Wang resolved HDFS-9896.
-------------------------------
    Resolution: Duplicate

> WebHDFS API may return invalid JSON
> -----------------------------------
>
>                 Key: HDFS-9896
>                 URL: https://issues.apache.org/jira/browse/HDFS-9896
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 2.6.0, 2.6.5
>         Environment: FreeBSD 10.2
>            Reporter: Alexander Shorin
>
> {code}
> >>> import requests
> >>> resp = requests.get('http://server:50000/webhdfs/v1/tmp/test/\x00/not_found.txt?op=GETFILESTATUS')
> >>> resp.content
> '{"RemoteException":{"exception":"FileNotFoundException","javaClassName":"java.io.FileNotFoundException","message":"File
does not exist: /tmp/test/\x00/not_found.txt"}}'
> >>> resp.json()
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/home/sandbox/project/venv/lib/python2.7/site-packages/requests/models.py", line
800, in json
>     self.content.decode(encoding), **kwargs
>   File "/usr/local/lib/python2.7/json/__init__.py", line 338, in loads
>     return _default_decoder.decode(s)
>   File "/usr/local/lib/python2.7/json/decoder.py", line 366, in decode
>     obj, end = self.raw_decode(s, idx=_w(s, 0).end())
>   File "/usr/local/lib/python2.7/json/decoder.py", line 382, in raw_decode
>     obj, end = self.scan_once(s, idx)
> ValueError: Invalid control character at: line 1 column 147 (char 146)
> {code}
> The null byte {{\x00}} should be encoded according JSON rules as {{\u0000}}. It seems
like WebHDFS returns path back as is without any processing breaking the content type.



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