Re: [opnfv-tech-discuss] [yardstick]k8s HA test

2017-12-18 Thread Sofia Enriquez 
As Xuan Jia wrote, I can write documentation as well as helping in the
implementation of HA test cases
Sofia

2017-12-18 6:39 GMT-03:00 贾玄 <jiax...@chinamobile.com>:

> Add one more people in it.  Yibo Cai from ARM.
>
>
>
> After talking with yulong, we think we not only support containerized
> OpenStack which managed by K8s, but also pure Kubernetes, as we have pure
> Kubernetes to run containerized VNF.
>
> In order to make the architecture more pluginable, I suggest support two
> kinds of HA. One is OpenStack HA , the other one is Kubernetes HA.
>
>
>
> Thanks
>
>
>
> Xuan Jia
>
> Project Manager
>
> Big Data & IT Technology Research Center China Mobile Research Institute
>
> 32 Xuanwumen West Street, Xicheng Distirct, Beijing 100032, China
>
> Mobile: (+86) 13811000575
>
> E-mail: jiax...@chinamobile.com
>
>
>
> *发件人:* opnfv-tech-discuss-boun...@lists.opnfv.org [mailto:
> opnfv-tech-discuss-boun...@lists.opnfv.org] *代表 *贾玄
> *发送时间:* 2017年12月18日 16:43
> *收件人:* 'Sofia Enriquez' <lsofia.enriq...@gmail.com>; 'Gaoliang (kubi)' <
> jean.gaoli...@huawei.com>; 'chenjiankun' <chenjiank...@huawei.com>; 'Guo,
> Ruijing' <ruijing@intel.com>
> *抄送:* 'Brattain, Ross B' <ross.b.bratt...@intel.com>; '龙雨' <
> yl...@biigroup.cn>; 'opnfv-tech-discuss' <opnfv-tech-discuss@lists.
> opnfv.org>
> *主题:* Re: [opnfv-tech-discuss] [yardstick]k8s HA test
>
>
>
> That’s an excellent feature for k8s.
>
> Ruijing and Jack can help do it, and Sofia can help do some documentation
> for it .
>
>
>
> Thanks
>
> Xuan Jia
>
> Project Manager
>
> Big Data & IT Technology Research Center China Mobile Research Institute
>
> 32 Xuanwumen West Street, Xicheng Distirct, Beijing 100032, China
>
> Mobile: (+86) 13811000575
>
> E-mail: jiax...@chinamobile.com
>
>
>
> *发件人:* Gaoliang (kubi) [mailto:jean.gaoli...@huawei.com
> <jean.gaoli...@huawei.com>]
> *发送时间:* 2017年12月18日 15:39
> *收件人:* 龙雨 <yl...@biigroup.cn>; opnfv-tech-discuss <
> opnfv-tech-discuss@lists.opnfv.org>
> *抄送:* 付乔 <fuq...@chinamobile.com>; jiaxuan <jiax...@chinamobile.com>;
> Guo, Ruijing <ruijing@intel.com>; Brattain, Ross B <
> ross.b.bratt...@intel.com>
> *主题:* RE: [opnfv-tech-discuss] [yardstick]k8s HA test
>
>
>
> Hi Louie，
>
>
>
> Thanks for pointing this out.
>
>
>
> According to Yardstick Fraser planning, we are trying to implement more
> test cases for container testing, especially for K8S.
>
>
>
> In Euphrates, Yardstick already supports HA test cases for LXC scenarios
> which are deployed by OSA and ping test case for K8S.
>
>
>
> Now, it is the time to talk about HA test cases for K8S.
>
>
>
> From my perspective , Killing container and Killing progress are different
> fault injection type.  One is progress fault, the other is container fault.
> although I believe It make sense to test K8S with Killing container, there
> are still some topics to be discussed,  including  “how to kill the
> container”,” which containers we should kill” and “what metrics we should
> monitor”  .
>
>
>
> Based on our previous experience of LXC testing, I’m not sure if it make
> sense to kill the container instead of progress. In some containers, there
> are more than one openstack progress (such as cinder, it includes
> cinder-api and cinder-scheduler), you would extend the fault range with the
> killing container.
>
>
>
> I would like to invite HA team and Container4NFV team to join the thread.
> I guess they could give some valuable comments from their perspectives.
>
>
>
> Just my two cents.
>
>
>
> Regards,
>
> Kubi
>
>
>
>
>
> *From:* opnfv-tech-discuss-boun...@lists.opnfv.org [
> mailto:opnfv-tech-discuss-boun...@lists.opnfv.org
> <opnfv-tech-discuss-boun...@lists.opnfv.org>] *On Behalf Of *龙雨
> *Sent:* Thursday, December 14, 2017 4:16 PM
> *To:* opnfv-tech-discuss <opnfv-tech-discuss@lists.opnfv.org>
> *Subject:* [opnfv-tech-discuss] [yardstick]k8s HA test
>
>
>
>
>  Hi，all，
>
>  This is louie from BII-CFIEC，CFIEC is a third party neutral SDN/NFV
> technology evaluation and innovation center. Recently I have participate in
> OPNFV CVP test，
> as we know CVP certification use dovatil program and dovetail integrate
> other OPNFV test programs like yardstick，functest, etc.
>
>  When we do CVP test for our custom we meet a problem in HA test, the
> current CVP test tool doesn't support k8s, but our custom use k8s to
> realize HA.
> Yardstick use ssh to login the controller node and kill such as nova-api
>

Re: [opnfv-tech-discuss] [yardstick]k8s HA test

2017-12-18 Thread 贾玄 
Add one more people in it.  Yibo Cai from ARM. 

 

After talking with yulong, we think we not only support containerized OpenStack 
which managed by K8s, but also pure Kubernetes, as we have pure Kubernetes to 
run containerized VNF. 

In order to make the architecture more pluginable, I suggest support two kinds 
of HA. One is OpenStack HA , the other one is Kubernetes HA.

 

Thanks

 

Xuan Jia

Project Manager

Big Data & IT Technology Research Center China Mobile Research Institute

32 Xuanwumen West Street, Xicheng Distirct, Beijing 100032, China

Mobile: (+86) 13811000575

E-mail:  <mailto:jiax...@chinamobile.com> jiax...@chinamobile.com

 

发件人: opnfv-tech-discuss-boun...@lists.opnfv.org 
[mailto:opnfv-tech-discuss-boun...@lists.opnfv.org] 代表 贾玄
发送时间: 2017年12月18日 16:43
收件人: 'Sofia Enriquez' <lsofia.enriq...@gmail.com>; 'Gaoliang (kubi)' 
<jean.gaoli...@huawei.com>; 'chenjiankun' <chenjiank...@huawei.com>; 'Guo, 
Ruijing' <ruijing@intel.com>
抄送: 'Brattain, Ross B' <ross.b.bratt...@intel.com>; '龙雨' <yl...@biigroup.cn>; 
'opnfv-tech-discuss' <opnfv-tech-discuss@lists.opnfv.org>
主题: Re: [opnfv-tech-discuss] [yardstick]k8s HA test

 

That’s an excellent feature for k8s.  

Ruijing and Jack can help do it, and Sofia can help do some documentation for 
it . 

 

Thanks

Xuan Jia

Project Manager

Big Data & IT Technology Research Center China Mobile Research Institute

32 Xuanwumen West Street, Xicheng Distirct, Beijing 100032, China

Mobile: (+86) 13811000575

E-mail:  <mailto:jiax...@chinamobile.com> jiax...@chinamobile.com

 

发件人: Gaoliang (kubi) [mailto:jean.gaoli...@huawei.com] 
发送时间: 2017年12月18日 15:39
收件人: 龙雨 <yl...@biigroup.cn <mailto:yl...@biigroup.cn> >; opnfv-tech-discuss 
<opnfv-tech-discuss@lists.opnfv.org <mailto:opnfv-tech-discuss@lists.opnfv.org> 
>
抄送: 付乔 <fuq...@chinamobile.com <mailto:fuq...@chinamobile.com> >; jiaxuan 
<jiax...@chinamobile.com <mailto:jiax...@chinamobile.com> >; Guo, Ruijing 
<ruijing@intel.com <mailto:ruijing@intel.com> >; Brattain, Ross B 
<ross.b.bratt...@intel.com <mailto:ross.b.bratt...@intel.com> >
主题: RE: [opnfv-tech-discuss] [yardstick]k8s HA test

 

Hi Louie，

 

Thanks for pointing this out.

 

According to Yardstick Fraser planning, we are trying to implement more test 
cases for container testing, especially for K8S.

 

In Euphrates, Yardstick already supports HA test cases for LXC scenarios which 
are deployed by OSA and ping test case for K8S.  

 

Now, it is the time to talk about HA test cases for K8S.

 

>From my perspective , Killing container and Killing progress are different 
>fault injection type.  One is progress fault, the other is container fault. 
>although I believe It make sense to test K8S with Killing container, there are 
>still some topics to be discussed,  including  “how to kill the container”,” 
>which containers we should kill” and “what metrics we should monitor”  .

 

Based on our previous experience of LXC testing, I’m not sure if it make sense 
to kill the container instead of progress. In some containers, there are more 
than one openstack progress (such as cinder, it includes cinder-api and 
cinder-scheduler), you would extend the fault range with the killing container. 

 

I would like to invite HA team and Container4NFV team to join the thread.  I 
guess they could give some valuable comments from their perspectives.

 

Just my two cents.

 

Regards,

Kubi

 

 

From:  <mailto:opnfv-tech-discuss-boun...@lists.opnfv.org> 
opnfv-tech-discuss-boun...@lists.opnfv.org [ 
<mailto:opnfv-tech-discuss-boun...@lists.opnfv.org> 
mailto:opnfv-tech-discuss-boun...@lists.opnfv.org] On Behalf Of 龙雨
Sent: Thursday, December 14, 2017 4:16 PM
To: opnfv-tech-discuss < <mailto:opnfv-tech-discuss@lists.opnfv.org> 
opnfv-tech-discuss@lists.opnfv.org>
Subject: [opnfv-tech-discuss] [yardstick]k8s HA test

 


 Hi，all，

 This is louie from BII-CFIEC，CFIEC is a third party neutral SDN/NFV technology 
evaluation and innovation center. Recently I have participate in OPNFV CVP test，
as we know CVP certification use dovatil program and dovetail integrate other 
OPNFV test programs like yardstick，functest, etc.

 When we do CVP test for our custom we meet a problem in HA test, the current 
CVP test tool doesn't support k8s, but our custom use k8s to realize HA.
Yardstick use ssh to login the controller node and kill such as nova-api 
progress to test HA, but due to the k8s feature the nova service exist in one 
container
behind the k8s ， and yardstick tes tool cann't login the container directly, 
this lead to the HA testcase failed.
 
 I have feedback this problem to dovetail and CVP，according to the HA testcase 
I put forward one method to solve this problem，use kill container to instead of
kill nova-api progress，as for haproxy， due to the k8s use ngin

Re: [opnfv-tech-discuss] [yardstick]k8s HA test

2017-12-18 Thread 贾玄 
That’s an excellent feature for k8s.  

Ruijing and Jack can help do it, and Sofia can help do some documentation for 
it . 

 

Thanks

Xuan Jia

Project Manager

Big Data & IT Technology Research Center China Mobile Research Institute

32 Xuanwumen West Street, Xicheng Distirct, Beijing 100032, China

Mobile: (+86) 13811000575

E-mail:  <mailto:jiax...@chinamobile.com> jiax...@chinamobile.com

 

发件人: Gaoliang (kubi) [mailto:jean.gaoli...@huawei.com] 
发送时间: 2017年12月18日 15:39
收件人: 龙雨 <yl...@biigroup.cn>; opnfv-tech-discuss 
<opnfv-tech-discuss@lists.opnfv.org>
抄送: 付乔 <fuq...@chinamobile.com>; jiaxuan <jiax...@chinamobile.com>; Guo, 
Ruijing <ruijing@intel.com>; Brattain, Ross B <ross.b.bratt...@intel.com>
主题: RE: [opnfv-tech-discuss] [yardstick]k8s HA test

 

Hi Louie，

 

Thanks for pointing this out.

 

According to Yardstick Fraser planning, we are trying to implement more test 
cases for container testing, especially for K8S.

 

In Euphrates, Yardstick already supports HA test cases for LXC scenarios which 
are deployed by OSA and ping test case for K8S.  

 

Now, it is the time to talk about HA test cases for K8S.

 

>From my perspective , Killing container and Killing progress are different 
>fault injection type.  One is progress fault, the other is container fault. 
>although I believe It make sense to test K8S with Killing container, there are 
>still some topics to be discussed,  including  “how to kill the container”,” 
>which containers we should kill” and “what metrics we should monitor”  .

 

Based on our previous experience of LXC testing, I’m not sure if it make sense 
to kill the container instead of progress. In some containers, there are more 
than one openstack progress (such as cinder, it includes cinder-api and 
cinder-scheduler), you would extend the fault range with the killing container. 

 

I would like to invite HA team and Container4NFV team to join the thread.  I 
guess they could give some valuable comments from their perspectives.

 

Just my two cents.

 

Regards,

Kubi

 

 

From:  <mailto:opnfv-tech-discuss-boun...@lists.opnfv.org> 
opnfv-tech-discuss-boun...@lists.opnfv.org [ 
<mailto:opnfv-tech-discuss-boun...@lists.opnfv.org> 
mailto:opnfv-tech-discuss-boun...@lists.opnfv.org] On Behalf Of 龙雨
Sent: Thursday, December 14, 2017 4:16 PM
To: opnfv-tech-discuss < <mailto:opnfv-tech-discuss@lists.opnfv.org> 
opnfv-tech-discuss@lists.opnfv.org>
Subject: [opnfv-tech-discuss] [yardstick]k8s HA test

 


 Hi，all，

 This is louie from BII-CFIEC，CFIEC is a third party neutral SDN/NFV technology 
evaluation and innovation center. Recently I have participate in OPNFV CVP test，
as we know CVP certification use dovatil program and dovetail integrate other 
OPNFV test programs like yardstick，functest, etc.

 When we do CVP test for our custom we meet a problem in HA test, the current 
CVP test tool doesn't support k8s, but our custom use k8s to realize HA.
Yardstick use ssh to login the controller node and kill such as nova-api 
progress to test HA, but due to the k8s feature the nova service exist in one 
container
behind the k8s ， and yardstick tes tool cann't login the container directly, 
this lead to the HA testcase failed.
 
 I have feedback this problem to dovetail and CVP，according to the HA testcase 
I put forward one method to solve this problem，use kill container to instead of
kill nova-api progress，as for haproxy， due to the k8s use nginx to realize LB 
we can use kill nginx to instead. Meanwhile, I ask dovetail whether they can 
offer
a patch in dovetail to match k8s HA test, the reply me this patch is all for 
yardstick and may do  many changes, so they suggest me go to yardstick progrom 
seek for
help. I know yardstick maybe support k8s in F version，but it seems to long for 
my current condition.

 By the way, in my test SUT every controller nodes have a container run 
opensatck service, such as nova-api, glance-api. We can access one controller 
node to kill
the container by specify name id or use k8s command to kill the container, When 
kill the container k8s will auto recovey the container on this node, and the 
recovery time is decided by k8s configuration.

This email first I want to know whether this kill container methond feasible； 
second，whether yardstick could offer such a patch for k8s HA test.

Thanks,

 louie

--

龙雨  Louie Long

邮箱:ylong <mailto:xdzh...@biigroup.cn> @biigroup.cn
E-mail: ylong <mailto:xdzh...@biigroup.cn> @biigroup.cn 

手机：+86 13261979365  Mobile: +86 13261979365

传真: 86-10-5638-1682-162Fax: 86-10-5867-8466

邮编：10 Postcode：10

地址：北京市经济技术开发区经海五路58号院数字工场5号楼2层

Add: 2nd Floor, Building 5, No.58 Jinghai Road, BDA, Beijing, China

天地互连信息技术有限公司  下一代互联网国家工程中心
Website:  <http://www.biigroup.com/> www.biigroup.com   <http://www.c

Re: [opnfv-tech-discuss] [yardstick]k8s HA test

2017-12-17 Thread Gaoliang (kubi) 
Hi Louie，

Thanks for pointing this out.

According to Yardstick Fraser planning, we are trying to implement more test 
cases for container testing, especially for K8S.

In Euphrates, Yardstick already supports HA test cases for LXC scenarios which 
are deployed by OSA and ping test case for K8S.

Now, it is the time to talk about HA test cases for K8S.

From my perspective , Killing container and Killing progress are different 
fault injection type.  One is progress fault, the other is container fault. 
although I believe It make sense to test K8S with Killing container, there are 
still some topics to be discussed,  including  “how to kill the container”,” 
which containers we should kill” and “what metrics we should monitor”  .

Based on our previous experience of LXC testing, I’m not sure if it make sense 
to kill the container instead of progress. In some containers, there are more 
than one openstack progress (such as cinder, it includes cinder-api and 
cinder-scheduler), you would extend the fault range with the killing container.

I would like to invite HA team and Container4NFV team to join the thread.  I 
guess they could give some valuable comments from their perspectives.

Just my two cents.

Regards,
Kubi

From: opnfv-tech-discuss-boun...@lists.opnfv.org 
[mailto:opnfv-tech-discuss-boun...@lists.opnfv.org] On Behalf Of 龙雨
Sent: Thursday, December 14, 2017 4:16 PM
To: opnfv-tech-discuss <opnfv-tech-discuss@lists.opnfv.org>
Subject: [opnfv-tech-discuss] [yardstick]k8s HA test


 Hi，all，

 This is louie from BII-CFIEC，CFIEC is a third party neutral SDN/NFV technology 
evaluation and innovation center. Recently I have participate in OPNFV CVP test，
as we know CVP certification use dovatil program and dovetail integrate other 
OPNFV test programs like yardstick，functest, etc.

 When we do CVP test for our custom we meet a problem in HA test, the current 
CVP test tool doesn't support k8s, but our custom use k8s to realize HA.
Yardstick use ssh to login the controller node and kill such as nova-api 
progress to test HA, but due to the k8s feature the nova service exist in one 
container
behind the k8s ， and yardstick tes tool cann't login the container directly, 
this lead to the HA testcase failed.

 I have feedback this problem to dovetail and CVP，according to the HA testcase 
I put forward one method to solve this problem，use kill container to instead of
kill nova-api progress，as for haproxy， due to the k8s use nginx to realize LB 
we can use kill nginx to instead. Meanwhile, I ask dovetail whether they can 
offer
a patch in dovetail to match k8s HA test, the reply me this patch is all for 
yardstick and may do  many changes, so they suggest me go to yardstick progrom 
seek for
help. I know yardstick maybe support k8s in F version，but it seems to long for 
my current condition.

 By the way, in my test SUT every controller nodes have a container run 
opensatck service, such as nova-api, glance-api. We can access one controller 
node to kill
the container by specify name id or use k8s command to kill the container, When 
kill the container k8s will auto recovey the container on this node, and the 
recovery time is decided by k8s configuration.

This email first I want to know whether this kill container methond feasible； 
second，whether yardstick could offer such a patch for k8s HA test.

Thanks,

 louie

--
龙雨  Louie Long
邮箱:yl...@biigroup.cn<mailto:xdzh...@biigroup.cn>E-mail: 
yl...@biigroup.cn<mailto:xdzh...@biigroup.cn>
手机：+86 13261979365  Mobile: +86 13261979365
传真: 86-10-5638-1682-162Fax: 86-10-5867-8466
邮编：10 Postcode：10
地址：北京市经济技术开发区经海五路58号院数字工场5号楼2层
Add: 2nd Floor, Building 5, No.58 Jinghai Road, BDA, Beijing, China
天地互连信息技术有限公司  下一代互联网国家工程中心
Website: www.biigroup.com<http://www.biigroup.com/>  
www.cfiec.net<http://www.cfiec.net/>
___
opnfv-tech-discuss mailing list
opnfv-tech-discuss@lists.opnfv.org
https://lists.opnfv.org/mailman/listinfo/opnfv-tech-discuss

Re: [opnfv-tech-discuss] [yardstick]k8s HA test

2017-12-14 Thread 龙雨 
-- Original --
From:  "龙雨";
Date:  Thu, Dec 14, 2017 04:16 PM
To:  "opnfv-tech-discuss"; 

Subject:  [yardstick]k8s HA test

 

 Hi，all，

 This is louie from BII-CFIEC，CFIEC is a third party neutral SDN/NFV technology 
evaluation and innovation center. Recently I have participate in OPNFV CVP test，
as we know CVP certification use dovatil program and dovetail integrate other 
OPNFV test programs like yardstick，functest, etc.

 When we do CVP test for our custom we meet a problem in HA test, the current 
CVP test tool doesn't support k8s, but our custom use k8s to realize HA.
Yardstick use ssh to login the controller node and kill such as nova-api 
progress to test HA, but due to the k8s feature the nova service exist in one 
container
behind the k8s ， and yardstick tes tool cann't login the container directly, 
this lead to the HA testcase failed.
 
 I have feedback this problem to dovetail and CVP，according to the HA testcase 
I put forward one method to solve this problem，use kill container to instead of
kill nova-api progress，as for haproxy， due to the k8s use nginx to realize LB 
we can use kill nginx to instead. Meanwhile, I ask dovetail whether they can 
offer
a patch in dovetail to match k8s HA test, the reply me this patch is all for 
yardstick and may do  many changes, so they suggest me go to yardstick progrom 
seek for
help. I know yardstick maybe support k8s in F version，but it seems to long for 
my current condition.

 By the way, in my test SUT every controller nodes have a container run 
opensatck service, such as nova-api, glance-api. We can access one controller 
node to kill
the container by specify name id or use k8s command to kill the container, When 
kill the container k8s will auto recovey the container on this node, and the 
recovery time is decided by k8s configuration.

This email first I want to know whether this kill container methond feasible； 
second，whether yardstick could offer such a patch for k8s HA test.

Thanks,

 louie



--

龙雨  Louie Long
邮箱:yl...@biigroup.cnE-mail: yl...@biigroup.cn 
手机：+86 13261979365  Mobile: +86 13261979365
 
传真: 86-10-5638-1682-162Fax: 86-10-5867-8466


邮编：10 Postcode：10


地址：北京市经济技术开发区经海五路58号院数字工场5号楼2层
 
Add: 2nd Floor, Building 5, No.58 Jinghai Road, BDA, Beijing, China
 天地互连信息技术有限公司  下一代互联网国家工程中心
Website: www.biigroup.com  www.cfiec.net___
opnfv-tech-discuss mailing list
opnfv-tech-discuss@lists.opnfv.org
https://lists.opnfv.org/mailman/listinfo/opnfv-tech-discuss

[opnfv-tech-discuss] [yardstick]k8s HA test

2017-12-14 Thread 龙雨 
Hi，all，

 This is louie from BII-CFIEC，CFIEC is a third party neutral SDN/NFV technology 
evaluation and innovation center. Recently I have participate in OPNFV CVP test，
as we know CVP certification use dovatil program and dovetail integrate other 
OPNFV test programs like yardstick，functest, etc.

 When we do CVP test for our custom we meet a problem in HA test, the current 
CVP test tool doesn't support k8s, but our custom use k8s to realize HA.
Yardstick use ssh to login the controller node and kill such as nova-api 
progress to test HA, but due to the k8s feature the nova service exist in one 
container
behind the k8s ， and yardstick tes tool cann't login the container directly, 
this lead to the HA testcase failed.
 
 I have feedback this problem to dovetail and CVP，according to the HA testcase 
I put forward one method to solve this problem，use kill container to instead of
kill nova-api progress，as for haproxy， due to the k8s use nginx to realize LB 
we can use kill nginx to instead. Meanwhile, I ask dovetail whether they can 
offer
a patch in dovetail to match k8s HA test, the reply me this patch is all for 
yardstick and may do  many changes, so they suggest me go to yardstick progrom 
seek for
help. I know yardstick maybe support k8s in F version，but it seems to long for 
my current condition.

 By the way, in my test SUT every controller nodes have a container run 
opensatck service, such as nova-api, glance-api. We can access one controller 
node to kill
the container by specify name id or use k8s command to kill the container, When 
kill the container k8s will auto recovey the container on this node, and the 
recovery time is decided by k8s configuration.

This email first I want to know whether this kill container methond feasible； 
second，whether yardstick could offer such a patch for k8s HA test.

Thanks,

 louie



--

龙雨  Louie Long
邮箱:yl...@biigroup.cnE-mail: yl...@biigroup.cn 
手机：+86 13261979365  Mobile: +86 13261979365
 
传真: 86-10-5638-1682-162Fax: 86-10-5867-8466


邮编：10 Postcode：10


地址：北京市经济技术开发区经海五路58号院数字工场5号楼2层
 
Add: 2nd Floor, Building 5, No.58 Jinghai Road, BDA, Beijing, China
 天地互连信息技术有限公司  下一代互联网国家工程中心
Website: www.biigroup.com  www.cfiec.net___
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