Antonenko Alexander created AMBARI-9128:
-------------------------------------------
Summary: 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
###
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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