You are viewing a plain text version of this content. The canonical link for it is here.
Posted to user@couchdb.apache.org by Carlos Alonso <ca...@cabify.com> on 2017/06/19 12:17:10 UTC
Error 500 when creating db without quorum
Hi guys,
I've just seen the following scenario and I'd like to have your input on it.
Running a CouchDB 2.0.0 cluster of 4 nodes, 2 of them being down, if I try
to create a new database I get an error 500 from the server but
unexpectedly, the database is created!! Also, depending on the configured
replicas, the nodes down may even get a replica. Should I file a GH issue
for further investigation on this?
Regards
--
[image: Cabify - Your private Driver] <http://www.cabify.com/>
*Carlos Alonso*
Data Engineer
Madrid, Spain
carlos.alonso@cabify.com
Prueba gratis con este código
#CARLOSA6319 <https://cabify.com/i/carlosa6319>
[image: Facebook] <http://cbify.com/fb_ES>[image: Twitter]
<http://cbify.com/tw_ES>[image: Instagram] <http://cbify.com/in_ES>[image:
Linkedin] <https://www.linkedin.com/in/mrcalonso>
--
Este mensaje y cualquier archivo adjunto va dirigido exclusivamente a su
destinatario, pudiendo contener información confidencial sometida a secreto
profesional. No está permitida su reproducción o distribución sin la
autorización expresa de Cabify. Si usted no es el destinatario final por
favor elimínelo e infórmenos por esta vía.
This message and any attached file are intended exclusively for the
addressee, and it may be confidential. You are not allowed to copy or
disclose it without Cabify's prior written authorization. If you are not
the intended recipient please delete it from your system and notify us by
e-mail.
Re: Error 500 when creating db without quorum
Posted by Carlos Alonso <ca...@cabify.com>.
Yeah, sorry if I didn't explained myself properly, I was suggesting filing
the GH issue because the error 500 doesn't feel accurate to what it
actually happened. A 202 I guess would be more appropriated. I've created
this issue for it: https://github.com/apache/couchdb/issues/603. Feel free
to change/comment anything about it.
Many thanks for your help everyone.
On Mon, Jun 19, 2017 at 11:37 PM Joan Touzet <wo...@apache.org> wrote:
> In my opinion:
>
> The bug to file on GitHub is the actual 500 error. We should return
> something a bit friendlier, either a 202 or possibly a 412 if we really
> can't create the database on even a single node.
>
> The behaviour, on the other hand, is working as intended.
>
> -Joan
>
> ----- Original Message -----
> From: "Robert Samuel Newson" <rn...@apache.org>
> To: "user" <us...@couchdb.apache.org>
> Sent: Monday, 19 June, 2017 1:23:41 PM
> Subject: Re: Error 500 when creating db without quorum
>
> Another case of the AP nature of the system.
>
> The create database operation succeeds if at least one node performs the
> action (which is to create a document in the non-clustered _dbs database).
>
> The 500 is because the operation timed out waiting for a majority of nodes
> to report success, I am guessing.
>
> Once the other two nodes come back up, the _dbs database update will be
> replicated to them.
>
> B.
>
>
> > On 19 Jun 2017, at 13:17, Carlos Alonso <ca...@cabify.com>
> wrote:
> >
> > Hi guys,
> >
> > I've just seen the following scenario and I'd like to have your input on
> it.
> >
> > Running a CouchDB 2.0.0 cluster of 4 nodes, 2 of them being down, if I
> try
> > to create a new database I get an error 500 from the server but
> > unexpectedly, the database is created!! Also, depending on the configured
> > replicas, the nodes down may even get a replica. Should I file a GH issue
> > for further investigation on this?
> >
> > Regards
> > --
> > [image: Cabify - Your private Driver] <http://www.cabify.com/>
> >
> > *Carlos Alonso*
> > Data Engineer
> > Madrid, Spain
> >
> > carlos.alonso@cabify.com
> >
> > Prueba gratis con este código
> > #CARLOSA6319 <https://cabify.com/i/carlosa6319>
> > [image: Facebook] <http://cbify.com/fb_ES>[image: Twitter]
> > <http://cbify.com/tw_ES>[image: Instagram] <http://cbify.com/in_ES
> >[image:
> > Linkedin] <https://www.linkedin.com/in/mrcalonso>
> >
> > --
> > Este mensaje y cualquier archivo adjunto va dirigido exclusivamente a su
> > destinatario, pudiendo contener información confidencial sometida a
> secreto
> > profesional. No está permitida su reproducción o distribución sin la
> > autorización expresa de Cabify. Si usted no es el destinatario final por
> > favor elimínelo e infórmenos por esta vía.
> >
> > This message and any attached file are intended exclusively for the
> > addressee, and it may be confidential. You are not allowed to copy or
> > disclose it without Cabify's prior written authorization. If you are not
> > the intended recipient please delete it from your system and notify us by
> > e-mail.
>
> --
[image: Cabify - Your private Driver] <http://www.cabify.com/>
*Carlos Alonso*
Data Engineer
Madrid, Spain
carlos.alonso@cabify.com
Prueba gratis con este código
#CARLOSA6319 <https://cabify.com/i/carlosa6319>
[image: Facebook] <http://cbify.com/fb_ES>[image: Twitter]
<http://cbify.com/tw_ES>[image: Instagram] <http://cbify.com/in_ES>[image:
Linkedin] <https://www.linkedin.com/in/mrcalonso>
--
Este mensaje y cualquier archivo adjunto va dirigido exclusivamente a su
destinatario, pudiendo contener información confidencial sometida a secreto
profesional. No está permitida su reproducción o distribución sin la
autorización expresa de Cabify. Si usted no es el destinatario final por
favor elimínelo e infórmenos por esta vía.
This message and any attached file are intended exclusively for the
addressee, and it may be confidential. You are not allowed to copy or
disclose it without Cabify's prior written authorization. If you are not
the intended recipient please delete it from your system and notify us by
e-mail.
Re: Error 500 when creating db without quorum
Posted by Joan Touzet <wo...@apache.org>.
In my opinion:
The bug to file on GitHub is the actual 500 error. We should return
something a bit friendlier, either a 202 or possibly a 412 if we really
can't create the database on even a single node.
The behaviour, on the other hand, is working as intended.
-Joan
----- Original Message -----
From: "Robert Samuel Newson" <rn...@apache.org>
To: "user" <us...@couchdb.apache.org>
Sent: Monday, 19 June, 2017 1:23:41 PM
Subject: Re: Error 500 when creating db without quorum
Another case of the AP nature of the system.
The create database operation succeeds if at least one node performs the action (which is to create a document in the non-clustered _dbs database).
The 500 is because the operation timed out waiting for a majority of nodes to report success, I am guessing.
Once the other two nodes come back up, the _dbs database update will be replicated to them.
B.
> On 19 Jun 2017, at 13:17, Carlos Alonso <ca...@cabify.com> wrote:
>
> Hi guys,
>
> I've just seen the following scenario and I'd like to have your input on it.
>
> Running a CouchDB 2.0.0 cluster of 4 nodes, 2 of them being down, if I try
> to create a new database I get an error 500 from the server but
> unexpectedly, the database is created!! Also, depending on the configured
> replicas, the nodes down may even get a replica. Should I file a GH issue
> for further investigation on this?
>
> Regards
> --
> [image: Cabify - Your private Driver] <http://www.cabify.com/>
>
> *Carlos Alonso*
> Data Engineer
> Madrid, Spain
>
> carlos.alonso@cabify.com
>
> Prueba gratis con este código
> #CARLOSA6319 <https://cabify.com/i/carlosa6319>
> [image: Facebook] <http://cbify.com/fb_ES>[image: Twitter]
> <http://cbify.com/tw_ES>[image: Instagram] <http://cbify.com/in_ES>[image:
> Linkedin] <https://www.linkedin.com/in/mrcalonso>
>
> --
> Este mensaje y cualquier archivo adjunto va dirigido exclusivamente a su
> destinatario, pudiendo contener información confidencial sometida a secreto
> profesional. No está permitida su reproducción o distribución sin la
> autorización expresa de Cabify. Si usted no es el destinatario final por
> favor elimínelo e infórmenos por esta vía.
>
> This message and any attached file are intended exclusively for the
> addressee, and it may be confidential. You are not allowed to copy or
> disclose it without Cabify's prior written authorization. If you are not
> the intended recipient please delete it from your system and notify us by
> e-mail.
Re: Error 500 when creating db without quorum
Posted by Robert Samuel Newson <rn...@apache.org>.
Another case of the AP nature of the system.
The create database operation succeeds if at least one node performs the action (which is to create a document in the non-clustered _dbs database).
The 500 is because the operation timed out waiting for a majority of nodes to report success, I am guessing.
Once the other two nodes come back up, the _dbs database update will be replicated to them.
B.
> On 19 Jun 2017, at 13:17, Carlos Alonso <ca...@cabify.com> wrote:
>
> Hi guys,
>
> I've just seen the following scenario and I'd like to have your input on it.
>
> Running a CouchDB 2.0.0 cluster of 4 nodes, 2 of them being down, if I try
> to create a new database I get an error 500 from the server but
> unexpectedly, the database is created!! Also, depending on the configured
> replicas, the nodes down may even get a replica. Should I file a GH issue
> for further investigation on this?
>
> Regards
> --
> [image: Cabify - Your private Driver] <http://www.cabify.com/>
>
> *Carlos Alonso*
> Data Engineer
> Madrid, Spain
>
> carlos.alonso@cabify.com
>
> Prueba gratis con este código
> #CARLOSA6319 <https://cabify.com/i/carlosa6319>
> [image: Facebook] <http://cbify.com/fb_ES>[image: Twitter]
> <http://cbify.com/tw_ES>[image: Instagram] <http://cbify.com/in_ES>[image:
> Linkedin] <https://www.linkedin.com/in/mrcalonso>
>
> --
> Este mensaje y cualquier archivo adjunto va dirigido exclusivamente a su
> destinatario, pudiendo contener información confidencial sometida a secreto
> profesional. No está permitida su reproducción o distribución sin la
> autorización expresa de Cabify. Si usted no es el destinatario final por
> favor elimínelo e infórmenos por esta vía.
>
> This message and any attached file are intended exclusively for the
> addressee, and it may be confidential. You are not allowed to copy or
> disclose it without Cabify's prior written authorization. If you are not
> the intended recipient please delete it from your system and notify us by
> e-mail.