Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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1.1.0, 2.0.0-alpha
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None
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Reviewed
Description
WebHdfs gives out cookies. But when the client passes them back, it'd sometimes reject them and return a HTTP 401 instead. ("Sometimes" as in after a restart.) The interesting thing is that if the client doesn't pass the cookie back, WebHdfs will be totally happy.
The correct behaviour should be to ignore the cookie if it looks invalid, and attempt to proceed with the request handling.
I haven't tried HttpFs to see whether it handles restart better.
Reproducing it with curl:
####################################################
## Initial curl. Storing cookie to file.
####################################################
[root@vbox2 ~]# curl -c /tmp/webhdfs.cookie -i 'http://localhost:50070/webhdfs/v1/?op=LISTSTATUS&user.name=bcwalrus'
HTTP/1.1 200 OK
Content-Type: application/json
Expires: Thu, 01-Jan-1970 00:00:00 GMT
Set-Cookie: hadoop.auth="u=bcwalrus&p=bcwalrus&t=simple&e=1333614686366&s=z2w5xpFlufnnEoOHxVRiXqxwtqM=";Path=/
Content-Length: 597
Server: Jetty(6.1.26)
{"FileStatuses":{"FileStatus":[
{"accessTime":0,"blockSize":0,"group":"supergroup","length":0,"modificationTime":1333577906198,"owner":"mapred","pathSuffix":"tmp","permission":"1777","replication":0,"type":"DIRECTORY"},
{"accessTime":0,"blockSize":0,"group":"supergroup","length":0,"modificationTime":1333577511848,"owner":"hdfs","pathSuffix":"user","permission":"1777","replication":0,"type":"DIRECTORY"},
{"accessTime":0,"blockSize":0,"group":"supergroup","length":0,"modificationTime":1333428745116,"owner":"mapred","pathSuffix":"var","permission":"755","replication":0,"type":"DIRECTORY"}
]}}
####################################################
## Another curl. Using the cookie jar.
####################################################
[root@vbox2 ~]# curl -b /tmp/webhdfs.cookie -i 'http://localhost:50070/webhdfs/v1/?op=LISTSTATUS&user.name=bcwalrus'
HTTP/1.1 200 OK
Content-Type: application/json
Content-Length: 597
Server: Jetty(6.1.26)
{"FileStatuses":{"FileStatus":[
{"accessTime":0,"blockSize":0,"group":"supergroup","length":0,"modificationTime":1333577906198,"owner":"mapred","pathSuffix":"tmp","permission":"1777","replication":0,"type":"DIRECTORY"},
{"accessTime":0,"blockSize":0,"group":"supergroup","length":0,"modificationTime":1333577511848,"owner":"hdfs","pathSuffix":"user","permission":"1777","replication":0,"type":"DIRECTORY"},
{"accessTime":0,"blockSize":0,"group":"supergroup","length":0,"modificationTime":1333428745116,"owner":"mapred","pathSuffix":"var","permission":"755","replication":0,"type":"DIRECTORY"}
]}}
####################################################
## Restart NN.
####################################################
[root@vbox2 ~]# /etc/init.d/hadoop-hdfs-namenode restartStopping Hadoop namenode: [ OK ]
stopping namenode
Starting Hadoop namenode: [ OK ]
starting namenode, logging to /var/log/hadoop-hdfs/hadoop-hdfs-namenode-vbox2.out
####################################################
## Curl using cookie jar gives error.
####################################################
[root@vbox2 ~]# curl -b /tmp/webhdfs.cookie -i 'http://localhost:50070/webhdfs/v1/?op=LISTSTATUS&user.name=bcwalrus'
HTTP/1.1 401 org.apache.hadoop.security.authentication.util.SignerException: Invalid signature
Content-Type: text/html; charset=iso-8859-1
Set-Cookie: hadoop.auth=;Path=/;Expires=Thu, 01-Jan-1970 00:00:00 GMT
Cache-Control: must-revalidate,no-cache,no-store
Content-Length: 1520
Server: Jetty(6.1.26)
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"/>
<title>Error 401 org.apache.hadoop.security.authentication.util.SignerException: Invalid signature</title>
</head>
<body><h2>HTTP ERROR 401</h2>
<p>Problem accessing /webhdfs/v1/. Reason:
<pre> org.apache.hadoop.security.authentication.util.SignerException: Invalid signature</pre></p><hr /><i><small>Powered by Jetty://</small></i><br/>
...
####################################################
## Curl without cookie jar is ok.
####################################################
[root@vbox2 ~]# curl -i 'http://localhost:50070/webhdfs/v1/?op=LISTSTATUS&user.name=bcwalrus'
HTTP/1.1 200 OK
Content-Type: application/json
Expires: Thu, 01-Jan-1970 00:00:00 GMT
Set-Cookie: hadoop.auth="u=bcwalrus&p=bcwalrus&t=simple&e=1333614995947&s=IXSvPIDbNrqmZryivGeoey6Kjwo=";Path=/
Content-Length: 597
Server: Jetty(6.1.26)
{"FileStatuses":{"FileStatus":[
{"accessTime":0,"blockSize":0,"group":"supergroup","length":0,"modificationTime":1333577906198,"owner":"mapred","pathSuffix":"tmp","permission":"1777","replication":0,"type":"DIRECTORY"},
{"accessTime":0,"blockSize":0,"group":"supergroup","length":0,"modificationTime":1333577511848,"owner":"hdfs","pathSuffix":"user","permission":"1777","replication":0,"type":"DIRECTORY"},
{"accessTime":0,"blockSize":0,"group":"supergroup","length":0,"modificationTime":1333428745116,"owner":"mapred","pathSuffix":"var","permission":"755","replication":0,"type":"DIRECTORY"}
]}}