[
https://issues.apache.org/jira/browse/HADOOP-15707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Giovanni Matteo Fumarola updated HADOOP-15707:
----------------------------------------------
Fix Version/s: 3.2.0
> Add IsActiveServlet to be used for Load Balancers
> -------------------------------------------------
>
> Key: HADOOP-15707
> URL: https://issues.apache.org/jira/browse/HADOOP-15707
> Project: Hadoop Common
> Issue Type: New Feature
> Components: common
> Reporter: Lukas Majercak
> Assignee: Lukas Majercak
> Priority: Major
> Fix For: 3.2.0
>
> Attachments: HADOOP-15707.000.patch, HADOOP-15707.001.patch,
> HADOOP-15707.002.patch, HADOOP-15707.003.patch, HADOOP-15707.004.patch
>
>
> Hadoop has a few services with HA setups and it is common to set them behind
> Load Balancers.
> We should add a way for the Load Balancers to understand what should be the
> UI to show.
> For example, the standby RM just redirects the requests to the active RM.
> However, if both RMs are behind a Load Balancer the IP might not be reachable.
> Most Load balancers have probes to check if a server reports HTTP code 200:
> *
> [Azure|https://docs.microsoft.com/en-us/azure/load-balancer/load-balancer-custom-probe-overview]
> *
> [AWS|https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-healthchecks.html]
> Components in Hadoop (e.g., NN, RM, Router,...) should have a unified way to
> report if they are active.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
