Tibor Meller created METRON-2190:
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Summary: [UI] Alerts UI: Indicating loading and preventing
parallel requests
Key: METRON-2190
URL: https://issues.apache.org/jira/browse/METRON-2190
Project: Metron
Issue Type: Bug
Reporter: Tibor Meller
Issues caused by having no loading indicator and allowing multiple requests at
the same time reported by both Telstra and Raytheon
h2. Loading indicator for alert list screen
Loading indicator will be applied for both manual and automatic queries but in
a different way (manual blocking, auto nonblocking).
Loading state of a manual query might better to block the UI (grouping,
filtering, querying, time range change, turning automatic querying on/of,
changing show/hide toggles).
Automatic query should be cancelled if the user trigger a manual query,
changing filtering, time range or show/hide setup.
h2. Introducing blocking loading state
Improvement could block the query button and automatic querying while UI
waiting for the response of a manual query.
This could fix having multiple requests at the same time.
h2. A) Issue: Lack of loading indicator (spinner)
There is no indicator such as a "spinner" that a query is pending/executing, so
if the screen does not change, you have no idea (or if you were not watching as
it changed). This is a problem when queries do not return immediately,
considering the issue where there are multiple pending queries (described
later).
h2. B) Issue: allowing Multiple pending Query Requests
For Solr queries that are not sub-second, as they are submitted and responses
are still pending, requests queue up and results start updating the UI in order
as they come in. If queries are really slow, this can become very confusing as
3-4 changes may happen in the UI.
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