Major - P3 We introduced a fix in WT-6924 to tackle increased cache usage due to HS content. One of the stats added as part of fix is being incorrectly calculated in __evict_walk_pages():
if (!WT_IS_HS(btree->dhandle) && __wt_cache_hs_dirty(session)) {
/* If target pages are less than 10, keep it like that. */
target_pages = target_pages < 10 ? target_pages : target_pages / 10;
WT_STAT_CONN_INCR(session, cache_eviction_target_page_reduced);
WT_STAT_DATA_INCR(session, cache_eviction_target_page_reduced);
}
The stat should only be updated when we actually reduce the number of target pages.