Dear Russel,
Let me try with your suggestion with an new, empty key and use modify_type
to update a single register.
And I will feedback to you on my result test.
Best regards,
Hue Tran
On Tue, Feb 7, 2017 at 5:37 PM, Russell Brown <russell.br...@mac.com> wrote:
>
> On 7 Feb 2017, at 10:27, my hue <tranmyhue.grac...@gmail.com> wrote:
>
> > Dear Russell,
> >
> > Yes, I updated all registers in one go.
> > And I do not try yet with updating a single register at a time.
> > let me try to see. But I wonder that any affect on solving conflict at
> riak cluster
> > if update all in one go?
> >
>
> Just trying to make the search space as small as possible. I don’t think
> _any_ of this should fail. The maps code is very well tested and well used,
> so it’s all kind of odd.
>
> Without hands on it’s hard to debug, and email back and forth is slow, so
> if you try the simplest possible thing and that still fails, it helps.
>
> IMO the simplest possible thing is to start with a new, empty key and use
> modify_type to update a single register.
>
> Many thanks
>
> Russell
>
> >
> >
> > On Tue, Feb 7, 2017 at 5:18 PM, Russell Brown <russell.br...@mac.com>
> wrote:
> > So in you’re updating all those registers in one go? Out of interest,
> what happens if you update a single register at a time?
> >
> > On 7 Feb 2017, at 10:02, my hue <tranmyhue.grac...@gmail.com> wrote:
> >
> > > Dear Russel,
> > >
> > > > Can you run riakc_map:to_op(Map). and show me the output of that,
> please?
> > >
> > > The following is output of riakc_map:to_op(Map) :
> > >
> > > {map, {update, [{update, {<<"updated_time_dt">>,
> register},{assign,<<"2017-02-06T17:22:39Z">>}},
> {update,{<<"updated_by_id">>,register}, {assign,<<"
> accounta25a424b8484181e8ba1bec25bf7c491">>}},{update,{<<"
> status_id">>,register},{assign,<<"show">>}},{update,{<
> <"start_time">>,register},{assign,<<"dont_use">>}},{
> update,{<<"restaurant_status_id">>,register}, {assign,<<"inactive">>}},
> {update,{<<"restaurant_id">>,register}, {assign,<<"
> rest848e042b3a0488640981c8a6dc4a8281">>}},{update,{<<"rest_location_p">>,register},
> {assign,<<"10.844117421366443,106.63982392275398">>}},
> {update,{<<"order_i">>,register},{assign,<<"0">>}},
> {update,{<<"name">>,register},{assign,<<"fullmenu">>}},
> {update,{<<"menu_category_revision_id">>,register}, {assign,<<"0-
> 634736bc14e0bd3ed7e3fe0f1ee64443">>}}, {update,{<<"maintain_mode_b">>
> ,register},{assign,<<"false">>}}, {update,{<<"id">>,register}, {assign,<<"
> menufe89488afa948875cab6b0b18d579f21">>}}, {update,{<<"end_time">>,
> register},{assign,<<"dont_use">>}},{update,{<<"currency">>,register},{assign,<<"cad">>}},
> {update,{<<"created_time_dt">>,register},
> {assign,<<"2017-01-27T03:34:04Z">>}},
> {update,{<<"created_by_id">>,register}, {assign,<<"
> accounta25a424b8484181e8ba1bec25bf7c491">>}},
> {update,{<<"account_id">>,register},
> {assign,<<"accounta25a424b8484181e8ba1bec25bf7c491">>}}]},
> <<131,108,0,0,0,3,104,2,109,0,0,0,12,39,21,84,209,219,42,57,
> 233,0,0,156,252,97,34,104,2,109,0,0,0,12,132,107,248,226,
> 103,5,182,208,0,0,118,2,97,39,104,2,109,0,0,0,12,137,252,
> 139,186,176,202,25,96,0,0,195,164,97,53,106>>}
> > >
> > >
> > >
> > >
> > > On Tue, Feb 7, 2017 at 4:36 PM, Russell Brown <russell.br...@mac.com>
> wrote:
> > >
> > > On 7 Feb 2017, at 09:34, my hue <tranmyhue.grac...@gmail.com> wrote:
> > >
> > > > Dear Russell,
> > > >
> > > > >What operation are you performing? What is the update you perform?
> Do you set a register value, add a register, remove a register?
> > > >
> > > > I used riakc_map:update to update value with map. I do the following
> steps :
> > > >
> > > > - Get FetchData map with fetch_type
> > > > - Extract key, value, context from FetchData
> > > > - Obtain UpdateData with:
> > > >
> > > > + Init map with context
> > >
> > > I don’t understand this step
> > >
> > > > + Use :
> > > >
> > > > riakc_map:update({K, register}, fun(R) -> riakc_register:set(V,
> R) end, InitMap)
> > > >
> > > > to obtain UpdateData
> > > >
> > > > Note:
> > > > K : key
> > > > V: value
> > > >
> > > > - Then update UpdateData with update_type
> > > >
> > >
> > > Can you run riakc_map:to_op(Map). and show me the output of that,
> please?
> > >
> > > > The following is sample about Update data :
> > > >
> > > > {map, [] ,
> > > > [{{<<"account_id">>,register},{register,<<>>,<<"
> accounta25a424b8484181e8ba1bec25bf7c491">>}},{{<<"created_
> by_id">>,register},{register,<<>>,<<"accounta25a424b8484181e8ba1bec
> 25bf7c491">>}},{{<<"created_time_dt">>,register},{
> register,<<>>,<<"2017-01-27T03:34:04Z">>}},{{<<"currency">>,register},{
> register,<<>>,<<"cad">>}},{{<<"end_time">>,register},{
> register,<<>>,<<"dont_use">>}},{{<<"id">>,register},{register,<<>>,<<"
> menufe89488afa948875cab6b0b18d579f21">>}},{{<<"maintain_
> mode_b">>,register},{register,<<>>,<<"false">>}},{{<<"menu_
> category_revision_id">>,register},{register,<<>>,<<"0-
> 634736bc14e0bd3ed7e3fe0f1ee64443">>}},{{<<"name">>,register}
> ,{register,<<>>,<<"fullmenu">>}},{{<<"order_i">>,register},{
> register,<<>>,<<"0">>}},{{<<"rest_location_p">>,register},{
> register,<<>>,<<"10.844117421366443,106.63982392275398">>}},{{<<"
> restaurant_id">>,register},{register,<<>>,<<"
> rest848e042b3a0488640981c8a6dc4a8281">>}},{{<<"restaurant_
> status_id">>,register},{register,<<>>,<<"inactive">>}}
> ,{{<<"start_time">>,register},{register,<<>>,<<"dont_use">>}
> },{{<<"status_id">>,register},{register,<<>>,<<"show">>}},{{
> <<"updated_by_id">>,register},{register,<<>>,<<"
> accounta25a424b8484181e8ba1bec25bf7c491">>}},{{<<"updated_
> time_dt">>,register},{register,<<>>,<<"2017-02-06T17:22:39Z">>}}],
> > > > [] , <<131,108,0,0,0,3,104,2,109,0,0,0,12,39,21,84,209,219,42,57,
> 233,0,0,156,252,97,34,104,2,109,0,0,0,12,132,107,248,226,
> 103,5,182,208,0,0,118,2,97,39,104,2,109,0,0,0,12,137,252,
> 139,186,176,202,25,96,0,0,195,164,97,53,106>>
> > > > }
> > > >
> > > >
> > > > On Tue, Feb 7, 2017 at 3:43 PM, Russell Brown <russell.br...@mac.com>
> wrote:
> > > >
> > > > On 7 Feb 2017, at 08:17, my hue <tranmyhue.grac...@gmail.com> wrote:
> > > >
> > > > > Dear John and Russell Brown,
> > > > >
> > > > > * How fast is your turnaround time between an update and a fetch?
> > > > >
> > > > > The turnaround time between an update and a fetch about 1 second.
> > > > > During my team and I debug, we adjusted haproxy with the scenario
> as follow:
> > > > >
> > > > > Scenario 1 : round robin via 5 nodes of cluster
> > > > >
> > > > > We meet issue at scenario 1 and we are afraid of that timeout can
> be occurs between nodes,
> > > > > make us still get stale data. Then we performed scenario 2
> > > > >
> > > > > Scenario 2: Disable round robin and only route request to node 1.
> Cluster still is 5 nodes.
> > > > > With this case we ensure that request update and fetch always come
> to and from node 1.
> > > > > And the issue still occurs.
> > > > >
> > > > > At the fail time, I hoped that can get any error log from riak
> nodes to give me any information.
> > > > > But riak log show to me nothing and everything is ok.
> > > > >
> > > > > * What operation are you performing?
> > > > >
> > > > > I used :
> > > > >
> > > > > riakc_pb_socket:update_type(Pid, {Bucket-Type, Bucket}, Key,
> riakc_map:to_op(Map), []).
> > > > > riakc_pb_socket:fetch_type(Pid, {BucketType, Bucket}, Key, []).
> > > >
> > > > What operation are you performing? What is the update you perform?
> Do you set a register value, add a register, remove a register?
> > > > >
> > > > > * It looks like the map is a single level map of last-write-wins
> registers. Is there a chance that the time on the node handling the update
> is behind the value in the lww-register?
> > > > >
> > > > > => I am not sure about logic show conflict of internal riak node.
> And the issue never happens if I used single node.
> > > > > My bucket properties as follow :
> > > > >
> > > > > {"props":{"name":"menu","active":true,"allow_mult":
> true,"backend":"bitcask_mult","basic_quorum":false,"big_
> vclock":50,"chash_keyfun":{"mod":"riak_core_util","fun":"
> chash_std_keyfun"},"claimant":"riak-node1@64.137.190.244","
> datatype":"map","dvv_enabled":true,"dw":"quorum","last_
> write_wins":false,"linkfun":{"mod":"riak_kv_wm_link_walker",
> "fun":"mapreduce_linkfun"},"n_val":3,"name":"menu","
> notfound_ok":true,"old_vclock":86400,"postcommit":[],"pr":0,
> "precommit":[],"pw":0,"r":"quorum","rw":"quorum","search_
> index":"menu_idx","small_vclock":50,"w":"quorum","young_vclock":20}}
> > > > >
> > > > > Note :
> > > > > + "datatype":"map"
> > > > > + "last_write_wins": false
> > > > > + "dvv_enabled": true
> > > > > + "allow_mult": true
> > > > >
> > > > >
> > > > > * Have you tried using the `modify_type` operation in
> riakc_pb_socket which does the fetch/update operation in sequence for you?
> > > > >
> > > > > => I dot not use yet, but my action is sequence with fetch and
> then update. Might be I will try modify_type to see.
> > > > >
> > > > > * Anything in the error logs on any of the nodes?
> > > > >
> > > > > => From the node log, no errror report at fail time.
> > > > >
> > > > > * Is the opaque context identical from the fetch and then later
> after the update?
> > > > >
> > > > > => There is the context got from fetch and that context used with
> update.
> > > > > And during our debug time with string of sequence : fetch ,
> update, fetch , update , .... the context I saw always the same at
> > > > > fetch data.
> > > > >
> > > > > Best regards,
> > > > > Hue Tran
> > > > >
> > > > >
> > > > >
> > > > > On Tue, Feb 7, 2017 at 2:11 AM, John Daily <jda...@basho.com>
> wrote:
> > > > > Originally I suspected the context which allows Riak to resolve
> conflicts was not present in your data, but I see it in your map structure.
> Thanks for supplying such a detailed description.
> > > > >
> > > > > How fast is your turnaround time between an update and a fetch?
> Even if the cluster is healthy it’s not impossible to see a timeout between
> nodes, which could result in a stale retrieval. Have you verified whether
> the stale data persists?
> > > > >
> > > > > A single node cluster gives an advantage that you’ll never see in
> a real cluster: a perfectly synchronized clock. It also reduces (but does
> not completely eliminate) the possibility of an internal timeout between
> processes.
> > > > >
> > > > > -John
> > > > >
> > > > >> On Feb 6, 2017, at 1:02 PM, my hue <tranmyhue.grac...@gmail.com>
> wrote:
> > > > >>
> > > > >> Dear Riak Team,
> > > > >>
> > > > >> I and my team used riak as database for my production with an
> cluster including 5 nodes.
> > > > >> While production run, we meet an critical bug that is sometimes
> fail to update document.
> > > > >> I and my colleagues performed debug and detected an issue with
> the scenario as follow:
> > > > >>
> > > > >> + fetch document
> > > > >> + change value of document
> > > > >> + update document
> > > > >>
> > > > >> Repeat about 10 times and will meet fail. With the document is
> updated continually,
> > > > >> sometimes will face update fail.
> > > > >>
> > > > >> The first time, 5 nodes of cluster we used riak version 2.1.1.
> > > > >> After meet above bug, we upgraded to use riak version 2.2.0 and
> this issue still occurs.
> > > > >>
> > > > >> Via many time test, debug using Tcpdump at riak node :
> > > > >>
> > > > >> tcpdump -A -ttt -i {interface} src host {host} and dst port
> {port}
> > > > >>
> > > > >> And together with the command:
> > > > >>
> > > > >> riak-admin status | grep "node_puts_map\| node_puts_map_total\|
> node_puts_total\| vnode_map_update_total\| vnode_puts_total\"
> > > > >>
> > > > >> we got that the riak server already get the update request.
> > > > >> However, do not know why riak backend fail to update document.
> > > > >> At the fail time, from riak server log everything is ok.
> > > > >>
> > > > >> Then we removed cluster and use a single riak server, and see
> that above bug never happen.
> > > > >>
> > > > >> For that reason, think that is only happen with cluster work. We
> took research on basho riak document and our riak configure
> > > > >> seems that like suggestion from document. We totally blocked on
> this issue and hope that can get support from you
> > > > >> so that can obtain a stable work from riak database for our
> production.
> > > > >> Thank you so much. Hope that can get your reply soon.
> > > > >>
> > > > >>
> > > > >> * The following is our riak node information :
> > > > >>
> > > > >> Riak version: 2.2.0
> > > > >> OS : CentOS Linux release 7.2.1511
> > > > >> Cpu : 4 core
> > > > >> Memory : 4G
> > > > >> Riak configure : the attached file "riak.conf"
> > > > >>
> > > > >> Note :
> > > > >>
> > > > >> - We mostly using default configure of riak configure except
> that we used storage backend is multi
> > > > >>
> > > > >> storage_backend = multi
> > > > >> multi_backend.bitcask_mult.storage_backend = bitcask
> > > > >> multi_backend.bitcask_mult.bitcask.data_root =
> /var/lib/riak/bitcask_mult
> > > > >> multi_backend.default = bitcask_mult
> > > > >>
> > > > >> ------------------------------------------------------------
> -----------------------------------------------------------------
> > > > >>
> > > > >> - Bucket type created with the following command:
> > > > >>
> > > > >> riak-admin bucket-type create dev_restor
> '{"props":{"backend":"bitcask_mult","datatype":"map"}}'
> > > > >> riak-admin bucket-type activate dev_restor
> > > > >>
> > > > >> ------------------------------------------------------------
> -----------------------------------------------------------------
> > > > >>
> > > > >> - Bucket Type Status :
> > > > >>
> > > > >> >> riak-admin bucket-type status dev_restor
> > > > >>
> > > > >> dev_restor is active
> > > > >> young_vclock: 20
> > > > >> w: quorum
> > > > >> small_vclock: 50
> > > > >> rw: quorum
> > > > >> r: quorum
> > > > >> pw: 0
> > > > >> precommit: []
> > > > >> pr: 0
> > > > >> postcommit: []
> > > > >> old_vclock: 86400
> > > > >> notfound_ok: true
> > > > >> n_val: 3
> > > > >> linkfun: {modfun,riak_kv_wm_link_walker,mapreduce_linkfun}
> > > > >> last_write_wins: false
> > > > >> dw: quorum
> > > > >> dvv_enabled: true
> > > > >> chash_keyfun: {riak_core_util,chash_std_keyfun}
> > > > >> big_vclock: 50
> > > > >> basic_quorum: false
> > > > >> backend: <<"bitcask_mult">>
> > > > >> allow_mult: true
> > > > >> datatype: map
> > > > >> active: true
> > > > >> claimant: 'riak-node1@64.137.190.244'
> > > > >>
> > > > >> ------------------------------------------------------------
> -----------------------------------------------------------------
> > > > >>
> > > > >> - Bucket Property :
> > > > >>
> > > > >> {"props":{"name":"menu","active":true,"allow_mult":
> true,"backend":"bitcask_mult","basic_quorum":false,"big_
> vclock":50,"chash_keyfun":{"mod":"riak_core_util","fun":"
> chash_std_keyfun"},"claimant":"riak-node1@64.137.190.244","
> datatype":"map","dvv_enabled":true,"dw":"quorum","last_
> write_wins":false,"linkfun":{"mod":"riak_kv_wm_link_walker",
> "fun":"mapreduce_linkfun"},"n_val":3,"name":"menu","
> notfound_ok":true,"old_vclock":86400,"postcommit":[],"pr":0,
> "precommit":[],"pw":0,"r":"quorum","rw":"quorum","search_
> index":"menu_idx","small_vclock":50,"w":"quorum","young_vclock":20}}
> > > > >>
> > > > >>
> > > > >> ------------------------------------------------------------
> -----------------------------------------------------------------
> > > > >>
> > > > >> - Member status :
> > > > >>
> > > > >> >> riak-admin member-status
> > > > >>
> > > > >> ================================= Membership
> ==================================
> > > > >> Status Ring Pending Node
> > > > >> ------------------------------------------------------------
> -------------------
> > > > >> valid 18.8% -- 'riak-node1@64.137.190.244'
> > > > >> valid 18.8% -- 'riak-node2@64.137.247.82'
> > > > >> valid 18.8% -- 'riak-node3@64.137.162.64'
> > > > >> valid 25.0% -- 'riak-node4@64.137.161.229'
> > > > >> valid 18.8% -- 'riak-node5@64.137.217.73'
> > > > >> ------------------------------------------------------------
> -------------------
> > > > >> Valid:5 / Leaving:0 / Exiting:0 / Joining:0 / Down:0
> > > > >>
> > > > >>
> > > > >> ------------------------------------------------------------
> -----------------------------------------------------------------
> > > > >>
> > > > >> - Ring
> > > > >>
> > > > >> >> riak-admin status | grep ring
> > > > >>
> > > > >> ring_creation_size : 64
> > > > >> ring_members : ['riak-node1@64.137.190.244','
> riak-node2@64.137.247.82', 'riak-node3@64.137.162.64','ri
> ak-node4@64.137.161.229', 'riak-node5@64.137.217.73']
> > > > >> ring_num_partitions : 64
> > > > >> ring_ownership : <<"[{'riak-node2@64.137.247.82',12},\n {'
> riak-node5@64.137.217.73',12},\n {'riak-node1@64.137.190.244',12},\n {'
> riak-node3@64.137.162.64',12},\n {'riak-node4@64.137.161.229',16}]">>
> > > > >> rings_reconciled : 0
> > > > >> rings_reconciled_total : 31
> > > > >>
> > > > >> ------------------------------------------------------------
> -----------------------------------------------------------------
> > > > >>
> > > > >> * The riak client :
> > > > >>
> > > > >> + riak-erlang-client: https://github.com/basho/riak-
> erlang-client
> > > > >> + release : 2.4.2
> > > > >>
> > > > >> ------------------------------------------------------------
> -----------------------------------------------------------------
> > > > >>
> > > > >> * Riak client API used:
> > > > >>
> > > > >> + Insert/Update:
> > > > >>
> > > > >> riakc_pb_socket:update_type(Pid, {Bucket-Type, Bucket}, Key,
> riakc_map:to_op(Map), []).
> > > > >>
> > > > >> + Fetch :
> > > > >>
> > > > >> riakc_pb_socket:fetch_type(Pid, {BucketType, Bucket}, Key, []).
> > > > >>
> > > > >> ------------------------------------------------------------
> -----------------------------------------------------------------
> > > > >>
> > > > >> * Step to perform an update :
> > > > >>
> > > > >> - Fetch document
> > > > >> - Update document
> > > > >>
> > > > >> ------------------------------------------------------------
> -----------------------------------------------------------------
> > > > >>
> > > > >> * Data got from fetch_type:
> > > > >>
> > > > >> {map, [{{<<"account_id">>,register}, <<"
> accounta25a424b8484181e8ba1bec25bf7c491">>},
> > > > >> {{<<"created_by_id">>,register}, <<"
> accounta25a424b8484181e8ba1bec25bf7c491">>}, {{<<"created_time_dt">>,
> register},<<"2017-01-27T03:34:04Z">>}, {{<<"currency">>,register},<<"cad">>},
> {{<<"end_time">>,register},<<"dont_use">>}, {{<<"id">>,register},<<"
> menufe89488afa948875cab6b0b18d579f21">>},
> {{<<"maintain_mode_b">>,register},<<"false">>},
> {{<<"menu_category_revision_id">>,register}, <<"0-
> 634736bc14e0bd3ed7e3fe0f1ee64443">>}, {{<<"name">>,register},<<"fullmenu">>},
> {{<<"order_i">>,register},<<"0">>}, {{<<"rest_location_p">>,register},
> <<"10.844117421366443,106.63982392275398">>}, {{<<"restaurant_id">>,register},
> <<"rest848e042b3a0488640981c8a6dc4a8281">>},
> {{<<"restaurant_status_id">>,register},<<"inactive">>},
> {{<<"start_time">>,register},<<"dont_use">>},
> {{<<"status_id">>,register},<<"hide">>}, {{<<"updated_by_id">>,register},
> <<"accounta25a424b8484181e8ba1bec25bf7c491">>}, {{<<"updated_time_dt">>,
> register},<<"2017-02-06T17:22:39Z">>}],
> > > > >> [],
> > > > >> [], <<131,108,0,0,0,3,104,2,109,0,0,0,12,39,21,84,209,219,42,57,
> 233,0,0,156,252,97,34,104,2,109,0,0,0,12,132,107,248,226,
> 103,5,182,208,0,0,118,2,97,40,104,2,109,0,0,0,12,137,252,
> 139,186,176,202,25,96,0,0,195,164,97,54,106>>}
> > > > >>
> > > > >>
> > > > >> * Update with update_type
> > > > >>
> > > > >> Below is Map data before using riakc_map:to_op(Map) :
> > > > >>
> > > > >> {map, [] ,
> > > > >> [{{<<"account_id">>,register},{register,<<>>,<<"
> accounta25a424b8484181e8ba1bec25bf7c491">>}},{{<<"created_
> by_id">>,register},{register,<<>>,<<"accounta25a424b8484181e8ba1bec
> 25bf7c491">>}},{{<<"created_time_dt">>,register},{
> register,<<>>,<<"2017-01-27T03:34:04Z">>}},{{<<"currency">>,register},{
> register,<<>>,<<"cad">>}},{{<<"end_time">>,register},{
> register,<<>>,<<"dont_use">>}},{{<<"id">>,register},{register,<<>>,<<"
> menufe89488afa948875cab6b0b18d579f21">>}},{{<<"maintain_
> mode_b">>,register},{register,<<>>,<<"false">>}},{{<<"menu_
> category_revision_id">>,register},{register,<<>>,<<"0-
> 634736bc14e0bd3ed7e3fe0f1ee64443">>}},{{<<"name">>,register}
> ,{register,<<>>,<<"fullmenu">>}},{{<<"order_i">>,register},{
> register,<<>>,<<"0">>}},{{<<"rest_location_p">>,register},{
> register,<<>>,<<"10.844117421366443,106.63982392275398">>}},{{<<"
> restaurant_id">>,register},{register,<<>>,<<"
> rest848e042b3a0488640981c8a6dc4a8281">>}},{{<<"restaurant_
> status_id">>,register},{register,<<>>,<<"inactive">>}}
> ,{{<<"start_time">>,register},{register,<<>>,<<"dont_use">>}
> },{{<<"status_id">>,register},{register,<<>>,<<"show">>}},{{
> <<"updated_by_id">>,register},{register,<<>>,<<"
> accounta25a424b8484181e8ba1bec25bf7c491">>}},{{<<"updated_
> time_dt">>,register},{register,<<>>,<<"2017-02-06T17:22:39Z">>}}],
> > > > >> [] , <<131,108,0,0,0,3,104,2,109,0,
> 0,0,12,39,21,84,209,219,42,57,233,0,0,156,252,97,34,104,2,
> 109,0,0,0,12,132,107,248,226,103,5,182,208,0,0,118,2,97,39,
> 104,2,109,0,0,0,12,137,252,139,186,176,202,25,96,0,0,195,164,97,53,106>>
> > > > >> }
> > > > >>
> > > > >>
> > > > >>
> > > > >>
> > > > >> -
> > > > >>
> > > > >> Best regards,
> > > > >> Hue Tran
> > > > >> <riak.conf>_______________________________________________
> > > > >> riak-users mailing list
> > > > >> riak-users@lists.basho.com
> > > > >> http://lists.basho.com/mailman/listinfo/riak-users_
> lists.basho.com
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>
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