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https://issues.apache.org/jira/browse/SLIDER-764?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14299358#comment-14299358
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Ted Yu commented on SLIDER-764:
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bq. start with some criteria for the minimum number of each component type
Yes. We can begin with count of each component type as threshold, then support
using percentage of max count for component type as threshold.
> Provide proper response when number of good nodes is lower than requested
> number of components
> ----------------------------------------------------------------------------------------------
>
> Key: SLIDER-764
> URL: https://issues.apache.org/jira/browse/SLIDER-764
> Project: Slider
> Issue Type: Task
> Reporter: Ted Yu
>
> While debugging a Slider-hbase deployment problem where client retrieved
> hbase-site.xml but verification of region server count failed, I found the
> following in SliderAppMaster log:
> {code}
> 2015-01-19 11:19:57,318 [AMRM Callback Handler Thread] INFO
> appmaster.SliderAppMaster (SliderAppMaster.java:onNodesUpdated(1603)) -
> Updated nodes [nodeId { host:
> "os-h2-2210-d6-sec-1421653828-hbase-slider3-1.hw.local" port: 45454 }
> httpAddress: "os-h2-2210-d6-sec-1421653828-hbase-slider3-1.hw.local:8044"
> rackName: "/default-rack" used { memory: 0 virtual_cores: 0 }
> capability { memory: 10240 virtual_cores: 8 } node_state: NS_UNHEALTHY
> health_report: "2/2 local-dirs are bad:
> /grid/0/yarn/local,/grid/1/yarn/local; 2/2 log- dirs are bad:
> /grid/0/yarn/log,/grid/1/yarn/log" last_health_report_time: 1421666370462]
> {code}
> In case there're not enough good nodes where requested number of components
> (such as region server) can be deployed, Slider shouldn't signal deployment
> success.
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