Currently we use the .wt_stable suffix to identify shared tables, including non-layered shared tables like the shared history store and shared metadata tables. This suffix is misleading since the term "stable" is coined for the stable table constituent of layered tables. The .wt_stable suffix was only introduced as a quick workaround to support shared behaviour.

As per peter.macko@mongodb.com's suggestion, to improve clarity, we should consider replacing the .wt_stable suffix with something more appropriate like .wt_shared suffix for non-layered shared tables.

Definition of done:

• rename existing instances of .wt_stable suffix for non-layered shared tables with clearer suffix
• make the relevant code changes here and other places as needed to account for this