Updating Counters on Riak 2.0 pre whatever

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Updating Counters on Riak 2.0 pre whatever

Jeremiah Peschka
I'm attempting to create a counter on Riak 2.0 built from the develop on Sunday. When I send a counter increment message using RpbCounterUpdateReq, I get the following back from Riak:

Riak returned an error. Code '0'. Message: Error processing incoming message: error:undef:[{riak_kv_counter,supported,
                                                 [],[]},
                                                {riak_kv_pb_counter,process,
                                                 2,
                                                 [{file,
                                                   "src/riak_kv_pb_counter.erl"},
                                                  {line,114}]},
                                                {riak_api_pb_server,
                                                 process_message,4,
                                                 [{file,
                                                   "src/riak_api_pb_server.erl"},
                                                  {line,386}]},
                                                {riak_api_pb_server,
                                                 connected,2,
                                                 [{file,
                                                   "src/riak_api_pb_server.erl"},
                                                  {line,228}]},
                                                {riak_api_pb_server,
                                                 decode_buffer,2,
                                                 [{file,
                                                   "src/riak_api_pb_server.erl"},
                                                  {line,362}]},
                                                {gen_fsm,handle_msg,7,
                                                 [{file,"gen_fsm.erl"},
                                                  {line,505}]},
                                                {proc_lib,init_p_do_apply,3,
                                                 [{file,"proc_lib.erl"},
                                                  {line,239}]}]
---
Jeremiah Peschka - Founder, Brent Ozar Unlimited
MCITP: SQL Server 2008, MVP
Cloudera Certified Developer for Apache Hadoop

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Re: Updating Counters on Riak 2.0 pre whatever

Russell Brown
Yes! Sorry!

We broke backwards compatibility during development. We merged the patch today[1]. The develop branch works right now. It will get into the next pre (or whatever the next tag is called.)

Apologies again, it was easier for me to do the new work without thinking about backwards compatibility, then re-add old counters when the 2.0 stuff was done.

Let me know if you have any more issues going forward, please.

Cheers

Russell

[1] https://github.com/basho/riak_kv/pull/697
On 22 Oct 2013, at 19:56, Jeremiah Peschka <[hidden email]> wrote:

> I'm attempting to create a counter on Riak 2.0 built from the develop on Sunday. When I send a counter increment message using RpbCounterUpdateReq, I get the following back from Riak:
>
> Riak returned an error. Code '0'. Message: Error processing incoming message: error:undef:[{riak_kv_counter,supported,
>                                                  [],[]},
>                                                 {riak_kv_pb_counter,process,
>                                                  2,
>                                                  [{file,
>                                                    "src/riak_kv_pb_counter.erl"},
>                                                   {line,114}]},
>                                                 {riak_api_pb_server,
>                                                  process_message,4,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,386}]},
>                                                 {riak_api_pb_server,
>                                                  connected,2,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,228}]},
>                                                 {riak_api_pb_server,
>                                                  decode_buffer,2,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,362}]},
>                                                 {gen_fsm,handle_msg,7,
>                                                  [{file,"gen_fsm.erl"},
>                                                   {line,505}]},
>                                                 {proc_lib,init_p_do_apply,3,
>                                                  [{file,"proc_lib.erl"},
>                                                   {line,239}]}]
> ---
> Jeremiah Peschka - Founder, Brent Ozar Unlimited
> MCITP: SQL Server 2008, MVP
> Cloudera Certified Developer for Apache Hadoop
> _______________________________________________
> riak-users mailing list
> [hidden email]
> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com


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Re: Updating Counters on Riak 2.0 pre whatever

Darren Govoni
In reply to this post by Jeremiah Peschka
Don't you guys do regression testing?


Sent from my Verizon Wireless 4G LTE Smartphone



-------- Original message --------
From: Russell Brown <[hidden email]>
Date: 10/22/2013 3:07 PM (GMT-05:00)
To: Jeremiah Peschka <[hidden email]>
Cc: riak-users <[hidden email]>
Subject: Re: Updating Counters on Riak 2.0 pre whatever


Yes! Sorry!

We broke backwards compatibility during development. We merged the patch today[1]. The develop branch works right now. It will get into the next pre (or whatever the next tag is called.)

Apologies again, it was easier for me to do the new work without thinking about backwards compatibility, then re-add old counters when the 2.0 stuff was done.

Let me know if you have any more issues going forward, please.

Cheers

Russell

[1] https://github.com/basho/riak_kv/pull/697
On 22 Oct 2013, at 19:56, Jeremiah Peschka <[hidden email]> wrote:

> I'm attempting to create a counter on Riak 2.0 built from the develop on Sunday. When I send a counter increment message using RpbCounterUpdateReq, I get the following back from Riak:
>
> Riak returned an error. Code '0'. Message: Error processing incoming message: error:undef:[{riak_kv_counter,supported,
>                                                  [],[]},
>                                                 {riak_kv_pb_counter,process,
>                                                  2,
>                                                  [{file,
>                                                    "src/riak_kv_pb_counter.erl"},
>                                                   {line,114}]},
>                                                 {riak_api_pb_server,
>                                                  process_message,4,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,386}]},
>                                                 {riak_api_pb_server,
>                                                  connected,2,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,228}]},
>                                                 {riak_api_pb_server,
>                                                  decode_buffer,2,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,362}]},
>                                                 {gen_fsm,handle_msg,7,
>                                                  [{file,"gen_fsm.erl"},
>                                                   {line,505}]},
>                                                 {proc_lib,init_p_do_apply,3,
>                                                  [{file,"proc_lib.erl"},
>                                                   {line,239}]}]
> ---
> Jeremiah Peschka - Founder, Brent Ozar Unlimited
> MCITP: SQL Server 2008, MVP
> Cloudera Certified Developer for Apache Hadoop
> _______________________________________________
> riak-users mailing list
> [hidden email]
> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com


_______________________________________________
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Re: Updating Counters on Riak 2.0 pre whatever

Jeremiah Peschka
In reply to this post by Russell Brown
Hah! No worries at all. Thanks for the clarification. I'll rebuild.

I wasn't sure if I needed to try to figure out (from a client perspective) if I needed to use the CRDT syntax for 2.0 and newer and RpbCounterUpdateReq for 1.4.x and earlier. Good to know that I can blindly proceed.

---
Jeremiah Peschka - Founder, Brent Ozar Unlimited
MCITP: SQL Server 2008, MVP
Cloudera Certified Developer for Apache Hadoop


On Tue, Oct 22, 2013 at 2:07 PM, Russell Brown <[hidden email]> wrote:
Yes! Sorry!

We broke backwards compatibility during development. We merged the patch today[1]. The develop branch works right now. It will get into the next pre (or whatever the next tag is called.)

Apologies again, it was easier for me to do the new work without thinking about backwards compatibility, then re-add old counters when the 2.0 stuff was done.

Let me know if you have any more issues going forward, please.

Cheers

Russell

[1] https://github.com/basho/riak_kv/pull/697
On 22 Oct 2013, at 19:56, Jeremiah Peschka <[hidden email]> wrote:

> I'm attempting to create a counter on Riak 2.0 built from the develop on Sunday. When I send a counter increment message using RpbCounterUpdateReq, I get the following back from Riak:
>
> Riak returned an error. Code '0'. Message: Error processing incoming message: error:undef:[{riak_kv_counter,supported,
>                                                  [],[]},
>                                                 {riak_kv_pb_counter,process,
>                                                  2,
>                                                  [{file,
>                                                    "src/riak_kv_pb_counter.erl"},
>                                                   {line,114}]},
>                                                 {riak_api_pb_server,
>                                                  process_message,4,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,386}]},
>                                                 {riak_api_pb_server,
>                                                  connected,2,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,228}]},
>                                                 {riak_api_pb_server,
>                                                  decode_buffer,2,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,362}]},
>                                                 {gen_fsm,handle_msg,7,
>                                                  [{file,"gen_fsm.erl"},
>                                                   {line,505}]},
>                                                 {proc_lib,init_p_do_apply,3,
>                                                  [{file,"proc_lib.erl"},
>                                                   {line,239}]}]
> ---
> Jeremiah Peschka - Founder, Brent Ozar Unlimited
> MCITP: SQL Server 2008, MVP
> Cloudera Certified Developer for Apache Hadoop
> _______________________________________________
> riak-users mailing list
> [hidden email]
> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com



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Re: Updating Counters on Riak 2.0 pre whatever

Jared Morrow
In reply to this post by Darren Govoni
Darren,

Yes we do, we are actively testing our pre builds as we speak.  This code was early pre-release and was stated as such.  It is also on the 'develop' branch which we advertise as development code and not necessarily fully integration tested.

Thanks for your concern.
-Jared


On Tue, Oct 22, 2013 at 1:21 PM, darren <[hidden email]> wrote:
Don't you guys do regression testing?


Sent from my Verizon Wireless 4G LTE Smartphone



-------- Original message --------
From: Russell Brown <[hidden email]>
Date: 10/22/2013 3:07 PM (GMT-05:00)
To: Jeremiah Peschka <[hidden email]>
Cc: riak-users <[hidden email]>
Subject: Re: Updating Counters on Riak 2.0 pre whatever


Yes! Sorry!

We broke backwards compatibility during development. We merged the patch today[1]. The develop branch works right now. It will get into the next pre (or whatever the next tag is called.)

Apologies again, it was easier for me to do the new work without thinking about backwards compatibility, then re-add old counters when the 2.0 stuff was done.

Let me know if you have any more issues going forward, please.

Cheers

Russell

[1] https://github.com/basho/riak_kv/pull/697
On 22 Oct 2013, at 19:56, Jeremiah Peschka <[hidden email]> wrote:

> I'm attempting to create a counter on Riak 2.0 built from the develop on Sunday. When I send a counter increment message using RpbCounterUpdateReq, I get the following back from Riak:
>
> Riak returned an error. Code '0'. Message: Error processing incoming message: error:undef:[{riak_kv_counter,supported,
>                                                  [],[]},
>                                                 {riak_kv_pb_counter,process,
>                                                  2,
>                                                  [{file,
>                                                    "src/riak_kv_pb_counter.erl"},
>                                                   {line,114}]},
>                                                 {riak_api_pb_server,
>                                                  process_message,4,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,386}]},
>                                                 {riak_api_pb_server,
>                                                  connected,2,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,228}]},
>                                                 {riak_api_pb_server,
>                                                  decode_buffer,2,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,362}]},
>                                                 {gen_fsm,handle_msg,7,
>                                                  [{file,"gen_fsm.erl"},
>                                                   {line,505}]},
>                                                 {proc_lib,init_p_do_apply,3,
>                                                  [{file,"proc_lib.erl"},
>                                                   {line,239}]}]
> ---
> Jeremiah Peschka - Founder, Brent Ozar Unlimited
> MCITP: SQL Server 2008, MVP
> Cloudera Certified Developer for Apache Hadoop
> _______________________________________________
> riak-users mailing list
> [hidden email]
> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com


_______________________________________________
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[hidden email]
http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com

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[hidden email]
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Re: Updating Counters on Riak 2.0 pre whatever

Jeremiah Peschka
As a follow up - typically when I'm asking questions about weird Riak behavior, it's because I'm:

1) testing pre-production features of Riak for inclusion in the C# driver
2) testing features too scary to even be generously labeled as pre-production
3) actively trying to break Riak to understand what happens when users do crazy things with the C# client

Since I'm not a Basho FTE, you can expect these things to happen on the public mailing list rather than in the privacy of a Basho engineering chat room.

---
Jeremiah Peschka - Founder, Brent Ozar Unlimited
MCITP: SQL Server 2008, MVP
Cloudera Certified Developer for Apache Hadoop


On Tue, Oct 22, 2013 at 2:32 PM, Jared Morrow <[hidden email]> wrote:
Darren,

Yes we do, we are actively testing our pre builds as we speak.  This code was early pre-release and was stated as such.  It is also on the 'develop' branch which we advertise as development code and not necessarily fully integration tested.

Thanks for your concern.
-Jared


On Tue, Oct 22, 2013 at 1:21 PM, darren <[hidden email]> wrote:
Don't you guys do regression testing?


Sent from my Verizon Wireless 4G LTE Smartphone



-------- Original message --------
From: Russell Brown <[hidden email]>
Date: 10/22/2013 3:07 PM (GMT-05:00)
To: Jeremiah Peschka <[hidden email]>
Cc: riak-users <[hidden email]>
Subject: Re: Updating Counters on Riak 2.0 pre whatever


Yes! Sorry!

We broke backwards compatibility during development. We merged the patch today[1]. The develop branch works right now. It will get into the next pre (or whatever the next tag is called.)

Apologies again, it was easier for me to do the new work without thinking about backwards compatibility, then re-add old counters when the 2.0 stuff was done.

Let me know if you have any more issues going forward, please.

Cheers

Russell

[1] https://github.com/basho/riak_kv/pull/697
On 22 Oct 2013, at 19:56, Jeremiah Peschka <[hidden email]> wrote:

> I'm attempting to create a counter on Riak 2.0 built from the develop on Sunday. When I send a counter increment message using RpbCounterUpdateReq, I get the following back from Riak:
>
> Riak returned an error. Code '0'. Message: Error processing incoming message: error:undef:[{riak_kv_counter,supported,
>                                                  [],[]},
>                                                 {riak_kv_pb_counter,process,
>                                                  2,
>                                                  [{file,
>                                                    "src/riak_kv_pb_counter.erl"},
>                                                   {line,114}]},
>                                                 {riak_api_pb_server,
>                                                  process_message,4,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,386}]},
>                                                 {riak_api_pb_server,
>                                                  connected,2,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,228}]},
>                                                 {riak_api_pb_server,
>                                                  decode_buffer,2,
>                                                  [{file,
>                                                    "src/riak_api_pb_server.erl"},
>                                                   {line,362}]},
>                                                 {gen_fsm,handle_msg,7,
>                                                  [{file,"gen_fsm.erl"},
>                                                   {line,505}]},
>                                                 {proc_lib,init_p_do_apply,3,
>                                                  [{file,"proc_lib.erl"},
>                                                   {line,239}]}]
> ---
> Jeremiah Peschka - Founder, Brent Ozar Unlimited
> MCITP: SQL Server 2008, MVP
> Cloudera Certified Developer for Apache Hadoop
> _______________________________________________
> riak-users mailing list
> [hidden email]
> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com


_______________________________________________
riak-users mailing list
[hidden email]
http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com

_______________________________________________
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[hidden email]
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Re: Updating Counters on Riak 2.0 pre whatever

Russell Brown
In reply to this post by Jeremiah Peschka

On 22 Oct 2013, at 20:24, Jeremiah Peschka <[hidden email]> wrote:

> Hah! No worries at all. Thanks for the clarification. I'll rebuild.
>
> I wasn't sure if I needed to try to figure out (from a client perspective) if I needed to use the CRDT syntax for 2.0 and newer and RpbCounterUpdateReq for 1.4.x and earlier. Good to know that I can blindly proceed.

Ok, this is a good question. And something we've been working on.
 
1.4 had counters, 2.0 has counters. Are they the same? Yes and no.
 
In 2.0 we add bucket types. We decided that CRDTs in 2.0 should take advantage of bucket types. The reason being that there is no sensible way to merge across types (how do you merge a Map with a Set? (we thought of a few ways, but non were intuitive)) It comes down to the reason for CRDTs: no conflicts, no siblings. If we allow different types in the same bucket then you can create the same key with two different types, which means siblings types: just as complex as siblings.
 
So, we restrict you to one CRDT type per bucket. But in 1.4 we didn't have this restriction. And we need to support 1.4 style counters.
 
If you use the 1.4 API or store counters in the default (untyped) bucket using the 2.0 API then you're interoperable between versions.
 
Sorry if it seems confusing. The point is that as a client developer you can access 1.4 counters through the 2.0 API by using the default bucket type OR continue support for the 1.4 API (or bolth.) Whichever you prefer.
 
I realise this might be an information overload, so feel free to ask questions about anything I wasn't clear enough about.

Cheers

Russell

>
> ---
> Jeremiah Peschka - Founder, Brent Ozar Unlimited
> MCITP: SQL Server 2008, MVP
> Cloudera Certified Developer for Apache Hadoop
>
>
> On Tue, Oct 22, 2013 at 2:07 PM, Russell Brown <[hidden email]> wrote:
> Yes! Sorry!
>
> We broke backwards compatibility during development. We merged the patch today[1]. The develop branch works right now. It will get into the next pre (or whatever the next tag is called.)
>
> Apologies again, it was easier for me to do the new work without thinking about backwards compatibility, then re-add old counters when the 2.0 stuff was done.
>
> Let me know if you have any more issues going forward, please.
>
> Cheers
>
> Russell
>
> [1] https://github.com/basho/riak_kv/pull/697
> On 22 Oct 2013, at 19:56, Jeremiah Peschka <[hidden email]> wrote:
>
> > I'm attempting to create a counter on Riak 2.0 built from the develop on Sunday. When I send a counter increment message using RpbCounterUpdateReq, I get the following back from Riak:
> >
> > Riak returned an error. Code '0'. Message: Error processing incoming message: error:undef:[{riak_kv_counter,supported,
> >                                                  [],[]},
> >                                                 {riak_kv_pb_counter,process,
> >                                                  2,
> >                                                  [{file,
> >                                                    "src/riak_kv_pb_counter.erl"},
> >                                                   {line,114}]},
> >                                                 {riak_api_pb_server,
> >                                                  process_message,4,
> >                                                  [{file,
> >                                                    "src/riak_api_pb_server.erl"},
> >                                                   {line,386}]},
> >                                                 {riak_api_pb_server,
> >                                                  connected,2,
> >                                                  [{file,
> >                                                    "src/riak_api_pb_server.erl"},
> >                                                   {line,228}]},
> >                                                 {riak_api_pb_server,
> >                                                  decode_buffer,2,
> >                                                  [{file,
> >                                                    "src/riak_api_pb_server.erl"},
> >                                                   {line,362}]},
> >                                                 {gen_fsm,handle_msg,7,
> >                                                  [{file,"gen_fsm.erl"},
> >                                                   {line,505}]},
> >                                                 {proc_lib,init_p_do_apply,3,
> >                                                  [{file,"proc_lib.erl"},
> >                                                   {line,239}]}]
> > ---
> > Jeremiah Peschka - Founder, Brent Ozar Unlimited
> > MCITP: SQL Server 2008, MVP
> > Cloudera Certified Developer for Apache Hadoop
> > _______________________________________________
> > riak-users mailing list
> > [hidden email]
> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
>
>


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Re: Updating Counters on Riak 2.0 pre whatever

Jeremiah Peschka
Good to know that bolth options are available. :)

We don't do any version detection in CorrugatedIron and instead rely on the developer to be relatively sane (just like you shouldn't try to send SQL Server 2012 commands to SQL Server 2000 over an ODBC connection). Our plan is to provide both the 1.4 counter API and the CRDT API.

We'll deprecate 1.4 counters whenever Basho does the same.

There's no information overload for me, but it is nice to see everything in the same place.

---
Jeremiah Peschka - Founder, Brent Ozar Unlimited
MCITP: SQL Server 2008, MVP
Cloudera Certified Developer for Apache Hadoop


On Tue, Oct 22, 2013 at 3:13 PM, Russell Brown <[hidden email]> wrote:

On 22 Oct 2013, at 20:24, Jeremiah Peschka <[hidden email]> wrote:

> Hah! No worries at all. Thanks for the clarification. I'll rebuild.
>
> I wasn't sure if I needed to try to figure out (from a client perspective) if I needed to use the CRDT syntax for 2.0 and newer and RpbCounterUpdateReq for 1.4.x and earlier. Good to know that I can blindly proceed.

Ok, this is a good question. And something we've been working on.

1.4 had counters, 2.0 has counters. Are they the same? Yes and no.

In 2.0 we add bucket types. We decided that CRDTs in 2.0 should take advantage of bucket types. The reason being that there is no sensible way to merge across types (how do you merge a Map with a Set? (we thought of a few ways, but non were intuitive)) It comes down to the reason for CRDTs: no conflicts, no siblings. If we allow different types in the same bucket then you can create the same key with two different types, which means siblings types: just as complex as siblings.

So, we restrict you to one CRDT type per bucket. But in 1.4 we didn't have this restriction. And we need to support 1.4 style counters.

If you use the 1.4 API or store counters in the default (untyped) bucket using the 2.0 API then you're interoperable between versions.

Sorry if it seems confusing. The point is that as a client developer you can access 1.4 counters through the 2.0 API by using the default bucket type OR continue support for the 1.4 API (or bolth.) Whichever you prefer.

I realise this might be an information overload, so feel free to ask questions about anything I wasn't clear enough about.

Cheers

Russell

>
> ---
> Jeremiah Peschka - Founder, Brent Ozar Unlimited
> MCITP: SQL Server 2008, MVP
> Cloudera Certified Developer for Apache Hadoop
>
>
> On Tue, Oct 22, 2013 at 2:07 PM, Russell Brown <[hidden email]> wrote:
> Yes! Sorry!
>
> We broke backwards compatibility during development. We merged the patch today[1]. The develop branch works right now. It will get into the next pre (or whatever the next tag is called.)
>
> Apologies again, it was easier for me to do the new work without thinking about backwards compatibility, then re-add old counters when the 2.0 stuff was done.
>
> Let me know if you have any more issues going forward, please.
>
> Cheers
>
> Russell
>
> [1] https://github.com/basho/riak_kv/pull/697
> On 22 Oct 2013, at 19:56, Jeremiah Peschka <[hidden email]> wrote:
>
> > I'm attempting to create a counter on Riak 2.0 built from the develop on Sunday. When I send a counter increment message using RpbCounterUpdateReq, I get the following back from Riak:
> >
> > Riak returned an error. Code '0'. Message: Error processing incoming message: error:undef:[{riak_kv_counter,supported,
> >                                                  [],[]},
> >                                                 {riak_kv_pb_counter,process,
> >                                                  2,
> >                                                  [{file,
> >                                                    "src/riak_kv_pb_counter.erl"},
> >                                                   {line,114}]},
> >                                                 {riak_api_pb_server,
> >                                                  process_message,4,
> >                                                  [{file,
> >                                                    "src/riak_api_pb_server.erl"},
> >                                                   {line,386}]},
> >                                                 {riak_api_pb_server,
> >                                                  connected,2,
> >                                                  [{file,
> >                                                    "src/riak_api_pb_server.erl"},
> >                                                   {line,228}]},
> >                                                 {riak_api_pb_server,
> >                                                  decode_buffer,2,
> >                                                  [{file,
> >                                                    "src/riak_api_pb_server.erl"},
> >                                                   {line,362}]},
> >                                                 {gen_fsm,handle_msg,7,
> >                                                  [{file,"gen_fsm.erl"},
> >                                                   {line,505}]},
> >                                                 {proc_lib,init_p_do_apply,3,
> >                                                  [{file,"proc_lib.erl"},
> >                                                   {line,239}]}]
> > ---
> > Jeremiah Peschka - Founder, Brent Ozar Unlimited
> > MCITP: SQL Server 2008, MVP
> > Cloudera Certified Developer for Apache Hadoop
> > _______________________________________________
> > riak-users mailing list
> > [hidden email]
> > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
>
>



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