All files are owned by mapr:mapr?
I have a setup where mapr is the user running the drillbit, but then I have
a directory that is owned by a another user. mapradm:mapradm on all files.
(Permissions on directories and files appears to be rwxr-x-r-x) When I run
the REFRESH TABLE metatdata the .drill.parquet_metadata file gets created
as mapr:mapr with rwxr-xr-x.
So
Drillbit User:mapr
Directory (and subdirectories/files) owner: mapradm:mapradm
Directory permissions (all files and folder under main directory) rwxr-x-r-x
I authenticated to drill via sqlline as user mapradm (this user should be
able to read and write just fine to all directories).
Now, one thing I did notice is my mapr user was not in the mapradm group,
therefore, didn't have write permissions anywhere... when I fixed that on
all nodes, and then I manually deleted the metadatafiles, things seem to be
working. I wonder if that was my issue?
Basically, the user running the drillbits need to be able to write files
(the .drill.parquet_metadata) or something bad will happen :) I will do
more testing. This may be a good candidate for some documentation work to
understand what permissions are required to be able to query these.
On Wed, Nov 11, 2015 at 1:36 PM, Vince Gonzalez <vince.gonza...@gmail.com>
wrote:
> Hi John, I tried this and didn't find any issues. Let me know if I didn't
> follow your reproduction faithfully.
>
> $ sqlline -u jdbc:drill: -n ec2-user -p mapr
> apache drill 1.2.0
> "drill baby drill"
> 0: jdbc:drill:> refresh table metadata dfs.`/tmp/flows`;
> +-------+------------------------------------------------------+
> | ok | summary |
> +-------+------------------------------------------------------+
> | true | Successfully updated metadata for table /tmp/flows. |
> +-------+------------------------------------------------------+
> 1 row selected (32.27 seconds)
> 0: jdbc:drill:> select srcIP,dstIP from dfs.`/tmp/flows` limit 12;
> +---------------+---------------+
> | srcIP | dstIP |
> +---------------+---------------+
> | 172.16.2.152 | 172.16.1.58 |
> | 172.16.1.58 | 172.16.2.152 |
> | 172.16.2.152 | 172.16.2.73 |
> | 172.16.2.152 | 172.16.2.73 |
> | 172.16.2.73 | 172.16.2.152 |
> | 172.16.2.152 | 172.16.2.73 |
> | 172.16.2.152 | 172.16.2.73 |
> | 172.16.2.152 | 172.16.2.73 |
> | 172.16.2.73 | 172.16.2.152 |
> | 172.16.2.73 | 172.16.2.152 |
> | 172.16.2.73 | 172.16.2.152 |
> | 172.16.2.152 | 172.16.2.73 |
> +---------------+---------------+
> 12 rows selected (5.654 seconds)
>
> And here's what my table structure looks like (as seen via MapR NFS):
>
> $ tree /mapr/vgonzalez.drill/tmp/flows/ | head -15
> /mapr/vgonzalez.drill/tmp/flows/
> └── 2015
> └── 11
> ├── 10
> │ ├── 21
> │ │ ├── 39
> │ │ │ ├── 03
> │ │ │ │ ├── _common_metadata
> │ │ │ │ ├── _metadata
> │ │ │ │ ├──
> part-r-00000-853882bd-66d8-4505-96ba-f0a282e374de.gz.parquet
> │ │ │ │ └── _SUCCESS
> │ │ │ └── 20
> │ │ │ ├── _common_metadata
> │ │ │ ├── _metadata
> │ │ │ ├──
> part-r-00000-37a94549-8e56-46d5-be88-cb28e6d8bc35.gz.parquet
>
> My parquet was created in Spark, not Drill. Not sure if that's relevant.
>
> I have authentication and impersonation turned on, and the files are owned
> by mapr:mapr. Here's my drill-override.conf:
>
> drill.exec: {
> cluster-id: "vgonzalez_drill-drillbits",
> zk.connect:
>
> "ip-172-16-2-36.ec2.internal:5181,ip-172-16-2-37.ec2.internal:5181,ip-172-16-2-38.ec2.internal:5181"
> }
> drill.exec.impersonation: { enabled: true, max_chained_user_hops: 3 }
> drill.exec { security.user.auth { enabled: true, packages +=
> "org.apache.drill.exec.rpc.user.security", impl: "pam", pam_profiles: [
> "login","sudo","sshd","password-auth" ] } }
>
>
>
>
>
> On Tue, Nov 10, 2015 at 1:17 PM, John Omernik <j...@omernik.com> wrote:
>
> > Cool, looking forward to it.
> >
> > On Mon, Nov 9, 2015 at 7:21 PM, Vince Gonzalez <vince.gonza...@gmail.com
> >
> > wrote:
> >
> > > Hey John, I have a secure cluster and some parquet files, I'll try this
> > out
> > > and report back.
> > >
> > > On Monday, November 9, 2015, John Omernik <j...@omernik.com> wrote:
> > >
> > > > Has anyone been able to try/test this? I am curious if it's me only
> > issue
> > > > or something more of bug so I can open a JIRA if needed.
> > > >
> > > > John
> > > >
> > > > On Fri, Nov 6, 2015 at 11:06 AM, John Omernik <j...@omernik.com
> > > > <javascript:;>> wrote:
> > > >
> > > > > If someone has authorization/authentication setup, to reproduce:
> > > > >
> > > > > Have a Parquet table with directories underneath the main (I have
> > > > > directories per day)
> > > > >
> > > > > Then issue REFRESH TABLE METADATA on the root of the table running
> an
> > > > > authenticated user other than the drill bit user. (I am using
> mapr, I
> > > > used
> > > > > my user to run the query, and yes I have access to the data)
> > > > >
> > > > > Then run a normal query and see what the result is. .
> > > > >
> > > > > John
> > > > >
> > > > > On Fri, Nov 6, 2015 at 10:22 AM, Neeraja Rentachintala <
> > > > > nrentachint...@maprtech.com <javascript:;>> wrote:
> > > > >
> > > > >> This doesn't make sense and seems like a bug.
> > > > >> I think the right behavior is for the Drillbit to access the cache
> > as
> > > > >> Drillbit user at the query time (there is no user level metadata
> > cache
> > > > in
> > > > >> Drill at this point).
> > > > >>
> > > > >>
> > > > >>
> > > > >> On Fri, Nov 6, 2015 at 6:57 AM, John Omernik <j...@omernik.com
> > > > <javascript:;>> wrote:
> > > > >>
> > > > >> > I ran REFRESH TABLE METADATA on a table, it completed
> > successfully.
> > > > >> >
> > > > >> > When I tried a subsequent query, I get a IOException: Permission
> > > > Denied
> > > > >> on
> > > > >> > .drill.parquet_metadata.
> > > > >> >
> > > > >> > I am running drill with authentication. I ran the REFRESH TABLE
> > > > >> METADATA
> > > > >> > as user X, it appears the .drill.parquet_metadata was created
> and
> > > > owned
> > > > >> by
> > > > >> > the user the drill bits are running as as is created with
> > > -rwxr-x-r-x
> > > > >> >
> > > > >> > My question is this: So, I can see why the file is owned by the
> > > drill
> > > > >> bit
> > > > >> > user, and the file is created with all can read permissions, but
> > why
> > > > am
> > > > >> I
> > > > >> > getting a permission denied when user X is trying to run a
> query?
> > > > >> >
> > > > >>
> > > > >
> > > > >
> > > >
> > >
> >
>
