WiredTiger has a feature called reference tracking to trace the recent history of page reference state transitions. It was only enabled in diagnostic build and in MongoDB debug build. We make the change in WT-9418 to introduce a build flag HAVE_REF_TRACK so that this feature can also be enabled in the production build. We'd like MongoDB to enable it in its production testing. In detail, at MongoDB side, we need to do the following:

• Change Mongodb scons script to always build the debug build with the new flag.
• Change Mongodb scons script to optionally build with the new flag in production build.
• Build with the new flag in our testing for production build.
• Ensure in the release build we are not building with the new flag.