riak-users Digest, Vol 66, Issue 12

Hiren Shah shah.hiren.t at gmail.com
Wed Jan 14 19:05:08 EST 2015


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On Wed, Jan 14, 2015 at 12:00 PM, <riak-users-request at lists.basho.com>
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> Today's Topics:
>
>    1. Re: How to find which nodes host a particular bucket/key?
>       (Charlie Voiselle)
>    2. Re: RIAK-CS Unable to create bucket using s3cmd -
>       AccessDenied (Sellmy Bassamp)
>    3. Disruptor like behaviour (xu xiut)
>    4. Riak control on cluster (Bruno Ren? Santos)
>    5. Re: Riak control on cluster (Chris Meiklejohn)
>    6. Re: Disruptor like behaviour (Sean Cribbs)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 13 Jan 2015 12:14:49 -0500
> From: Charlie Voiselle <cvoiselle at basho.com>
> To: Jay Doane <jay.s.doane at gmail.com>
> Cc: riak-users at lists.basho.com
> Subject: Re: How to find which nodes host a particular bucket/key?
> Message-ID: <F04AAF15-B23A-4612-A783-5F668B27DAC4 at basho.com>
> Content-Type: text/plain; charset="us-ascii"
>
> You can use the following Erlang snippet in `riak attach`:
>
> N=3,
> {ok,Ring} = riak_core_ring_manager:get_my_ring(),
> DocIdx = riak_core_util:chash_key({<<"my_bucket">>, <<"my_key">>}),
> <<I:160/integer>> = DocIdx,
> Preflist = riak_core_ring:preflist(DocIdx, Ring),
> {Targets, Fallbacks} = lists:split(N, Preflist),
> Targets.
>
> Verify that `N` matches your clusters N-val. Change `my_bucket` and
> `my_key` as appropriate.  If all of your nodes are up and healthy, this
> will give you the primaries in the `Targets` variable and the fallback
> partitions in order of preference in `Fallbacks`.
>
> Regards,
> Charlie Voiselle
> Basho Client Services
>
>
> > On Jan 12, 2015, at 4:28 PM, Jay Doane <jay.s.doane at gmail.com> wrote:
> >
> > Can anyone suggest how to determine the nodes on which a particular
> bucket/key are hosted in a cluster?
> >
> > Thanks,
> > Jay
> >
> >
> > _______________________________________________
> > riak-users mailing list
> > riak-users at lists.basho.com
> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
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> ------------------------------
>
> Message: 2
> Date: Tue, 13 Jan 2015 18:49:07 +0000 (UTC)
> From: Sellmy Bassamp <sellmybassamp at yahoo.com>
> To: Shunichi Shinohara <shino at basho.com>
> Cc: "riak-users at lists.basho.com" <riak-users at lists.basho.com>
> Subject: Re: RIAK-CS Unable to create bucket using s3cmd -
>         AccessDenied
> Message-ID:
>         <
> 1100374542.333474.1421174947053.JavaMail.yahoo at jws100193.mail.ne1.yahoo.com
> >
>
> Content-Type: text/plain; charset="utf-8"
>
> Thank-you, that corrected the issue.
>
>      On Monday, January 12, 2015 9:00 PM, Shunichi Shinohara <
> shino at basho.com> wrote:
>
>
>  Hi Sellmy,
>
> New versions of s3cmd uses AWS v4 authentication [1] but Riak CS
> does not support it yet [2].
> Tentatively, please add following one line to your .s3cfg file:
> signature_v2 = True
>
> [1] https://github.com/s3tools/s3cmd/issues/402
> [2] https://github.com/basho/riak_cs/issues/897
>
> Thanks,
> Shino
>
>
>
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> ------------------------------
>
> Message: 3
> Date: Wed, 14 Jan 2015 09:25:25 -0500
> From: xu xiut <xiut.xu at gmail.com>
> To: riak-users at lists.basho.com
> Subject: Disruptor like behaviour
> Message-ID:
>         <CANVqfJEKt6Envpvf35Tr21cVR_01mJsF5iwg4FgWH2qY=
> iH51g at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Is it possible to mimic most or all of Disruptor's behaviour with Riak?
>
> https://github.com/LMAX-Exchange/disruptor/wiki/Introduction
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> ------------------------------
>
> Message: 4
> Date: Wed, 14 Jan 2015 15:00:03 +0000
> From: Bruno Ren? Santos <bruno-r-santos at telecom.pt>
> To: <riak-users at lists.basho.com>
> Subject: Riak control on cluster
> Message-ID: <54B68473.3050008 at telecom.pt>
> Content-Type: text/plain; charset="utf-8"; format=flowed
>
> Hi,
>
> I have a cluster of 6 machines and wanted to check them using riak
> control. I tried to enabled it on node-01 (riak.conf => riak_control =
> on), restart riak on that node. But nothing appears on port 8069...
> where else can i configure these parameters? Or check what is wrong?
>
> Thanx
> Bruno
>
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 14 Jan 2015 16:13:50 +0100
> From: Chris Meiklejohn <cmeiklejohn at basho.com>
> To: Bruno Ren? Santos <bruno-r-santos at telecom.pt>
> Cc: riak-users <riak-users at lists.basho.com>
> Subject: Re: Riak control on cluster
> Message-ID:
>         <
> CAJBra_nv-spDd6Nv4bVGRJ54cLEaUaELeYiPuixQo3PygRUz0w at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> On Wed, Jan 14, 2015 at 4:00 PM, Bruno Ren? Santos
> <bruno-r-santos at telecom.pt> wrote:
> > Hi,
> >
> > I have a cluster of 6 machines and wanted to check them using riak
> control.
> > I tried to enabled it on node-01 (riak.conf => riak_control = on),
> restart
> > riak on that node. But nothing appears on port 8069... where else can i
> > configure these parameters? Or check what is wrong?
>
> Riak Control, when SSL is enabled, is reachable at '/admin', not at the
> root.
>
> In addition, is SSL enabled and configured?  If not, Riak Control will run
> on
> the default HTTP port, which is 8098.
>
> Thanks,
> - Chris
>
>
>
> ------------------------------
>
> Message: 6
> Date: Wed, 14 Jan 2015 09:32:43 -0600
> From: Sean Cribbs <sean at basho.com>
> To: xu xiut <xiut.xu at gmail.com>
> Cc: riak-users <riak-users at lists.basho.com>
> Subject: Re: Disruptor like behaviour
> Message-ID:
>         <CAHsw=
> e2D47dwnK+fkFkBjVnT1wNWu8NequpugiAQvPShC3WhJQ at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> I think this is a case of asking the wrong question. LMAX Disruptor is a
> single-process abstraction, similar to an event loop / reactor. Erlang
> already has this concept under the covers (use +K on the command-line to
> turn on kernel-polling).
>
> Riak (the product) is a distributed key-value store that runs on multiple
> nodes (OS processes). Riak Core is the framework upon which
> Riak-the-product is built, and provides cluster membership, consistent
> hashing, the virtual-node abstraction, handoff and various other utilities.
> None of these things talk about how work is distributed to multiple
> consumers in a single process. The two have very little in common.
>
> On Wed, Jan 14, 2015 at 8:25 AM, xu xiut <xiut.xu at gmail.com> wrote:
>
> > Is it possible to mimic most or all of Disruptor's behaviour with Riak?
> >
> > https://github.com/LMAX-Exchange/disruptor/wiki/Introduction
> >
> > _______________________________________________
> > riak-users mailing list
> > riak-users at lists.basho.com
> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
> >
> >
>
>
> --
> Sean Cribbs <sean at basho.com>
> Sr. Software Engineer
> Basho Technologies, Inc.
> http://basho.com/
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>
> End of riak-users Digest, Vol 66, Issue 12
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