We’ve noticed a performance issue with slower throughput for bulk inserts in disagg and observed very large page size(over 600 MB) seen at eviction, which appears to be a bug.

This ticket aims to investigate why, in disagg, a page can grow to such a large size without being effectively split and evicted, and to fix the bug if possible.

To run a patch build that reproduces the issue, please refer to the linked HELP ticket and check the comment for the build variant and task.