Andrii Tkach created AMBARI-3693:
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Summary: [perf] Hosts UI should not load host_components unless
editing a host
Key: AMBARI-3693
URL: https://issues.apache.org/jira/browse/AMBARI-3693
Project: Ambari
Issue Type: Bug
Components: client
Affects Versions: 1.4.1
Reporter: Andrii Tkach
Assignee: Andrii Tkach
Fix For: 1.4.2
Attachments: AMBARI-3693.patch
Ambari UI when getting hosts, also gets all the host-components. This is needed
to calculate state of each host, when filtering by components on Hosts page,
and when editing a host.
The call UI makes is
{code}
http://server:8080/api/v1/clusters/ga/hosts?fields=Hosts/host_name,Hosts/public_host_name,Hosts/disk_info,Hosts/cpu_count,Hosts/total_mem,Hosts/host_status,Hosts/last_heartbeat_time,Hosts/os_arch,Hosts/os_type,Hosts/ip,host_components,metrics/disk,metrics/load/load_one
{code}
UI should get away from loading all host-components where possible.
* Ambari load
** UI should not ask for all host-components
** Hosts should have their {{state}} flag reflect rolled-up status of
host-components
* Hosts page
** UI has no option but to load basic information on all host_components. But
only when you enter this page.
* Individual host editing
** Load host_components for that host (if not loaded)
UI might need a wrapper/utility class where we do not directly ask Ember for
host_components, but rather maintain a cache and load only when necessary. This
will allow the flexibility required for above varying cases.
Also API needs to provide the rolled up {{state}} flag.
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