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https://issues.apache.org/jira/browse/HDFS-10684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15583457#comment-15583457
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Andrew Wang commented on HDFS-10684:
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Hi [~jzhuge], any update on this issue?

> WebHDFS DataNode calls fail without parameter createparent
> ----------------------------------------------------------
>
>                 Key: HDFS-10684
>                 URL: https://issues.apache.org/jira/browse/HDFS-10684
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 2.7.1
>            Reporter: Samuel Low
>            Assignee: John Zhuge
>            Priority: Blocker
>              Labels: compatibility, webhdfs
>         Attachments: HDFS-10684.001-branch-2.patch
>
>
> Optional boolean parameters that are not provided in the URL cause the 
> WebHDFS create file command to fail.
>     curl -i -X PUT 
> "http://hadoop-primarynamenode:50070/webhdfs/v1/tmp/test1234?op=CREATE&overwrite=false";
> Response:
>     HTTP/1.1 307 TEMPORARY_REDIRECT
>     Cache-Control: no-cache
>     Expires: Fri, 15 Jul 2016 04:10:13 GMT
>     Date: Fri, 15 Jul 2016 04:10:13 GMT
>     Pragma: no-cache
>     Expires: Fri, 15 Jul 2016 04:10:13 GMT
>     Date: Fri, 15 Jul 2016 04:10:13 GMT
>     Pragma: no-cache
>     Content-Type: application/octet-stream
>     Location: 
> http://hadoop-datanode1:50075/webhdfs/v1/tmp/test1234?op=CREATE&namenoderpcaddress=hadoop-primarynamenode:8020&overwrite=false
>     Content-Length: 0
>     Server: Jetty(6.1.26)
> Following the redirect:
>     curl -i -X PUT -T MYFILE 
> "http://hadoop-datanode1:50075/webhdfs/v1/tmp/test1234?op=CREATE&namenoderpcaddress=hadoop-primarynamenode:8020&overwrite=false";
> Response:
> HTTP/1.1 100 Continue
>     HTTP/1.1 400 Bad Request
>     Content-Type: application/json; charset=utf-8
>     Content-Length: 162
>     Connection: close
>     
> {"RemoteException":{"exception":"IllegalArgumentException","javaClassName":"java.lang.IllegalArgumentException","message":"Failed
>  to parse \"null\" to Boolean."}}
> The problem can be circumvented by providing both "createparent" and 
> "overwrite" parameters.
> However, this is not possible when I have no control over the WebHDFS calls, 
> e.g. Ambari and Hue have errors due to this.



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