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https://issues.apache.org/jira/browse/HADOOP-15562?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Íñigo Goiri updated HADOOP-15562:
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Description:
We put HA services behind Software Load Balancers (SLBs), so the SLB only
redirects to the Active components (e.g., active Namenode).
SLBs usually rely on the return code of an endpoint to determine if a service
is available to serve requests.
Currently, one can use already existing interfaces like JMX to check the status
of the service.
However, there is a need to do the mapping between the JMX values and the state
of the service.
We should provide an interface (potentially REST) to check for particular JMX
(or a new ones) values and report a particular HTTP code (e.g., 200).
was:
Software Load Balancers usually rely on the return code of an endpoint to
determine if a service is available to serve requests.
Currently, one can use interfaces like JMX to check the status of the service.
However, there is a need to do the mapping between the JMX values and the state
of the service.
We should provide an interface (potentially REST) to check for particular JMX
(or a new ones) values and report a particular HTTP code (e.g., 200).
> Add Software Load Balancing support for Hadoop services
> -------------------------------------------------------
>
> Key: HADOOP-15562
> URL: https://issues.apache.org/jira/browse/HADOOP-15562
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Giovanni Matteo Fumarola
> Priority: Minor
>
> We put HA services behind Software Load Balancers (SLBs), so the SLB only
> redirects to the Active components (e.g., active Namenode).
> SLBs usually rely on the return code of an endpoint to determine if a service
> is available to serve requests.
> Currently, one can use already existing interfaces like JMX to check the
> status of the service.
> However, there is a need to do the mapping between the JMX values and the
> state of the service.
> We should provide an interface (potentially REST) to check for particular JMX
> (or a new ones) values and report a particular HTTP code (e.g., 200).
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