Show related data for large selections?

Question

I am attempting to rebuild an app originally created in Web AppBuilder (WAB) with Experience Builder (ExpB). This app relies heavily on a REST service with many point features and related tables. Each table has a 1:many relate with the parent point features. The service is loaded into an ArcGIS Online Web Map, which is then used as the data source in WAB and ExpB.

I am experiencing an issue in ExpB where the select>show related action (via spatial select or table widgets) breaks for larger selections (~200+ features), in most cases stalling indefinitely, sometimes crashing out to a "page unresponsive" message in Chrome. In WAB, the select>show related action can return up to the record return limit (10,000 for this particular service) with ease.

I assume that this is a bug with ExpB, but would love to know if there is simply a setting that I am missing. Unfortunately, the ExpB limitation breaks the core functionality of this app.

Similarly, is there any way to enable shift+select for rows in the attribute table? This is another feature of WAB that seems to be missing in ExpB. I have select multiple enabled, but can only add to the selection one row at a time.

I am using ExpB Developer edition 1.16 and can also confirm this behavior in the ArcGIS Online ExpB. Thanks for the advice!

kxu · Answer

Hi @ElijahMlawsky

The issue has been resolved.

Please note that Chrome browser has built-in constraints when dealing with large-volume data. We recommend using Firefox for better performance.

Thanks,

Ke

kxu · Answer

Hi @ElijahMlawsky,

When selecting a large amount of data using the Select widget, it is possible to experience freezing due to the processing load. This is a known limitation. We will discuss some technical solutions and then optimize accordingly. I will keep you update.

Workaround:

Using a Feature Layer as a replacement for a Map Image Layer.

Thanks,

Ke

ElijahMlawsky · Answer

Performance is slightly improved in the 2/2025 update, but the above issues do not appear to be resolved. Please see Case #03819484. Thanks.

Edit: Specifically, the application still crashes when selecting on the order of 10,000 + points, and the "show related data" option does not work for even small selections. I do see that using existing service relationships is now comparable with redefining relates at the app level, which is good progress.