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Posted to user@hadoop.apache.org by Debraj Manna <su...@gmail.com> on 2020/04/08 11:21:02 UTC
Decommissioning YARN resource manager node
Hi
I have 3 nodes running only resource-manager. I want to change it to 2
nodes. Can someone let me know what is the recommended a way to
decommission a node running resource-manager? I have seen the below link
but it explains only about nodemanager
https://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/GracefulDecommission.html
Can I just do the following (downtime is not a problem here)
1. Stop resourcemanager and nodemanager in all the nodes
2. Remove the node details from all the yarn-site.xml files
3. Restart the resourcemanager and nodemanager services in the remaining
nodes
Hadoop Version - 2.6.0
Re: Decommissioning YARN resource manager node
Posted by Debraj Manna <su...@gmail.com>.
I have posted the same in StackOverflow
<https://stackoverflow.com/questions/61099510/decomission-yarn-resource-manager-node>
and
did not get much reply there also. Anyone any thoughts on this?
On Wed, Apr 8, 2020 at 4:51 PM Debraj Manna <su...@gmail.com>
wrote:
> Hi
>
> I have 3 nodes running only resource-manager. I want to change it to 2
> nodes. Can someone let me know what is the recommended a way to
> decommission a node running resource-manager? I have seen the below link
> but it explains only about nodemanager
>
>
> https://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/GracefulDecommission.html
>
> Can I just do the following (downtime is not a problem here)
>
> 1. Stop resourcemanager and nodemanager in all the nodes
> 2. Remove the node details from all the yarn-site.xml files
> 3. Restart the resourcemanager and nodemanager services in the
> remaining nodes
>
> Hadoop Version - 2.6.0
>
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Posted by "epayne@apache.org" <ep...@apache.org>.
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I hope that helps.
-Eric Payne-
On Wednesday, April 8, 2020, 8:36:58 AM CDT, S B <sa...@gmail.com> wrote:
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Posted by S B <sa...@gmail.com>.
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Re: Decommissioning YARN resource manager node
Posted by Debraj Manna <su...@gmail.com>.
Yes we have more than two. So wanted to stop the third one and wanted to
confirm the recommended steps for doing the same.
On Thu, 9 Apr 2020, 17:24 Vinod Kumar Vavilapalli, <vi...@apache.org>
wrote:
> What do you mean by “3 nodes running only resource-manager”?
>
> ResourceManager (RM) is the master daemon in YARN.
>
> In typical setups, you either have only 1 RM (no high-availability) or 2
> RMs (one active, one standby). It is possible to have more than 2, but
> that’s rare.
>
> Stopping any of those other non-active RMs doesn’t have any impact on the
> cluster.
>
> Thanks
> +Vinod
>
> On Apr 8, 2020, at 4:51 PM, Debraj Manna <su...@gmail.com> wrote:
>
> Hi
>
> I have 3 nodes running only resource-manager. I want to change it to 2
> nodes. Can someone let me know what is the recommended a way to
> decommission a node running resource-manager? I have seen the below link
> but it explains only about nodemanager
>
>
> https://hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-site/GracefulDecommission.html
>
> Can I just do the following (downtime is not a problem here)
>
> 1. Stop resourcemanager and nodemanager in all the nodes
> 2. Remove the node details from all the yarn-site.xml files
> 3. Restart the resourcemanager and nodemanager services in the
> remaining nodes
>
> Hadoop Version - 2.6.0
>
>
>