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https://issues.apache.org/jira/browse/AMBARI-9128?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antonenko Alexander updated AMBARI-9128:
----------------------------------------
Attachment: AMBARI-9128.patch
> Bulk Ops on slaves for a service does not work as expected when the service
> is in maintenance mode
> --------------------------------------------------------------------------------------------------
>
> Key: AMBARI-9128
> URL: https://issues.apache.org/jira/browse/AMBARI-9128
> Project: Ambari
> Issue Type: Bug
> Components: ambari-web
> Affects Versions: 2.0.0
> Reporter: Antonenko Alexander
> Assignee: Antonenko Alexander
> Fix For: 2.0.0
>
> Attachments: AMBARI-9128.patch
>
>
> ###
> I am observing inconsistency in Ambari’s behavior (1.7.0) and would like to
> see if we should file a bug. My Hbase is in the maintenance mode with 2 RS
> down.
> Next, I go to the service -> click RS link -> explicitly select all hosts
> with RS servers in the Hosts screen -> Actions -> Start RS.
> Ambari even pops up a confirmation screen, but then doesn’t initiate any
> action.
> I understand that maintenance mode prevents components from responding to
> bulk requests, but the behavior I described is wrong – we can’t expect an
> admin go an start a component on each host manually.
> I’d expect this – components won’t respond to bulk requests, but if I
> explicitly select hosts and perform an action – it should go through.
> Especially if Ambari asks me for a confirmation.
> ###
> This should go thru. HBase is in Maintenance Mode, but specific operations
> on HBase itself or its slaves should work.
> PUT request to '/api/v1/clusters/HDP_2_2/host_components' sets an operation
> level in RequestInfo to CLUSTER.
> {code}
> {
> "RequestInfo":{
> "context":"Start RegionServers",
> "operation_level":{"level":"CLUSTER","cluster_name":"HDP_2_2"},
>
> "query":"HostRoles/component_name=HBASE_REGIONSERVER&HostRoles/host_name.in(c6403.ambari.apache.org,c6407.ambari.apache.org)&HostRoles/maintenance_state=OFF"
> },
> "Body":{
> "HostRoles":{"state":"STARTED"}
> }
> }
> {code}
> But our host-component maintenance state is IMPLIED_FROM_SERVICE.
> So our API rejects state change.
> UI should set an operation_level level to SERVICE in this case.
> {{(Actions -> Selected/Filtered/All hosts -> RegionServers/DataNodes... etc)}}
> So new PUT request should looks like:
> {code}
> {
> "RequestInfo":{
> "context":"Start RegionServers",
> "operation_level":{"level":"SERVICE","cluster_name":"HDP_2_2"},
> .......
> }
> {code}
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