Reduce load time for Pinot UI Home Page

[deepthi912]

In the Pinot UI home page currently the following is the behaviour:
Redundant calls
Multiple /instances calls, 2 for each component type (total 4*2=8) although one call should provide information for all
Multiple /zk/ls?path=%2Fpinot%2FLIVEINSTANCES calls, 1 each component type (total 4) although one call should provide information for all.

We can try to reduce these redundant calls:
Reuse the response from /instances to display instance counts and instance info tabs
Reuse the response from /zk/ls?path=%2Fpinot%2FLIVEINSTANCES to display instance status in instance info tabs.

Left over task from : #13278

[jayeshchoudhary]

@deepthi912 is it just on the homepage or do we have to address redundant api calls from other pages in the UI as well

[deepthi912]

Not necessarily with Home page, if there are redundant calls from these apis made in other pages, we can change that as well. Does that answer the question?

[jayeshchoudhary]

okay, will try to check each page and raise pr one page at a time. Starting with home page.

[Jackie-Jiang]

@jayeshchoudhary Does #14295 resolve this issue completely? Or are you going to make more improvements?

[deepthi912]

I think this issue can be closed now.