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From Matt Narrell <matt.narr...@gmail.com>
Subject Re: Access on HDFS
Date Fri, 08 May 2015 16:07:08 GMT
It looks like the group permissions on / is set to prohibit writes.

mn

> On May 8, 2015, at 9:59 AM, Olivier Renault <orenault@hortonworks.com> wrote:
> 
> I meant did you check that user admin is part of the hdfs group on the namenode. 
> 
> Olivier
> 
> 
> From: Pratik Gadiya
> Reply-To: "user@hadoop.apache.org <mailto:user@hadoop.apache.org>"
> Date: Friday, 8 May 2015 16:57
> To: "user@hadoop.apache.org <mailto:user@hadoop.apache.org>"
> Subject: RE: Access on HDFS
> 
> Confirmed, that I have checked it on Namenode.
> In addition to that, I have checked on all of the nodes in observed that superusergroup
is set as “hdfs” in hdfs-site.xml for all nodes.
>  
> Thanks,
> Pratik Gadiya
>  
> From: Olivier Renault [mailto:orenault@hortonworks.com <mailto:orenault@hortonworks.com>]

> Sent: Friday, May 08, 2015 8:59 PM
> To: user@hadoop.apache.org <mailto:user@hadoop.apache.org>
> Subject: Re: Access on HDFS
>  
> Could you confirm that you are doing it on the namenode ? ( I tend to do it on all nodes
)
>  
> Thanks,
> Olivier
>  
>  
> From: Pratik Gadiya
> Reply-To: "user@hadoop.apache.org <mailto:user@hadoop.apache.org>"
> Date: Friday, 8 May 2015 16:14
> To: "user@hadoop.apache.org <mailto:user@hadoop.apache.org>"
> Subject: RE: Access on HDFS
>  
> Checked it’s hdfs
>  
>     <property>
>       <name>dfs.permissions.superusergroup</name>
>       <value>hdfs</value>
>     </property>
>  
> Thanks,
> Pratik
>  
> From: Olivier Renault [mailto:orenault@hortonworks.com <mailto:orenault@hortonworks.com>]

> Sent: Friday, May 08, 2015 8:39 PM
> To: user@hadoop.apache.org <mailto:user@hadoop.apache.org>
> Subject: Re: Access on HDFS
>  
> You need to double check which group is setup in hdfs-site.xml. The parameter is: dfs.permissions.superusergroup
>  
> Thanks
> Olivier
>  
> From: Pratik Gadiya
> Reply-To: "user@hadoop.apache.org <mailto:user@hadoop.apache.org>"
> Date: Friday, 8 May 2015 15:46
> To: "user@hadoop.apache.org <mailto:user@hadoop.apache.org>"
> Subject: Access on HDFS
>  
> Hi All,
>  
> I want to add a user who can create/remove and perform all the operations on hdfs.
>  
> Here is what I tried:
>  
> 1.       Create user: adduser admin
> 2.       /usr/sbin/usermod -a -G hdfs admin
>  
> And when I try to create a directory on hdfs under “/” it raises error as follows,
> [root@vmkdev0021 ~]# id admin
> uid=500(admin) gid=500(admin) groups=500(admin),498(hdfs)
>  
> [root@vmkdev0021 ~]# su admin
> [admin@vmkdev0021 root]$ hadoop  fs -mkdir /input
> mkdir: Permission denied: user=admin, access=WRITE, inode="/":hdfs:hdfs:drwxr-xr-x
>  
> Please let me know how can I overcome this, this is reallly bugging me.
>  
> With Regards,
> Pratik Gadiya
>  
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