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From "Yongjun Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-5939) WebHdfs returns misleading error code and logs nothing if trying to create a file with no DNs in cluster
Date Wed, 12 Feb 2014 19:35:29 GMT
Yongjun Zhang created HDFS-5939:
-----------------------------------

             Summary: WebHdfs returns misleading error code and logs nothing if trying to
create a file with no DNs in cluster
                 Key: HDFS-5939
                 URL: https://issues.apache.org/jira/browse/HDFS-5939
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: hdfs-client
    Affects Versions: 2.3.0
            Reporter: Yongjun Zhang


When trying to access hdfs via webhdfs, and when datanode is dead, user will see an exception
below without any clue that it's caused by dead datanode:

$ curl -i -X PUT ".../webhdfs/v1/t1?op=CREATE&user.name=<userName>&overwrite=false"

...
{"RemoteException":{"exception":"IllegalArgumentException","javaClassName":"java.lang.IllegalArgumentException","message":"n
must be positive"}}

Need to fix the report to give user hint about dead datanode.




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