Hao Chen created EAGLE-868:
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Summary: Refactor metric chart render process to improve user
experience.
Key: EAGLE-868
URL: https://issues.apache.org/jira/browse/EAGLE-868
Project: Eagle
Issue Type: Sub-task
Reporter: Hao Chen
Assignee: Chang chen
Priority: Minor
*Problem*
Currently when initially loading hbase metric page, there will be relatively
long time that the whole metric dashboard is blank, then all charts and data
are rendered at same time.
*Improvements*
* Refactor the metric load logic to : Load metric chart config -> show metric
chart placeholder (show blank chart with no data) and show "data loading icon"
for each chart one by one -> load metric data query for each chart -> reader
metric data into metric chart when response returned and remove "data loading
icon" one by one.
* Add "loading-in-progress icon" with appropriate description during any
long-time actions.
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