The cursor statistic cursor_next_skip_lt_100 (same for cursor_prev_skip_lt_100) is somewhat misleading as we increment it when we skip 0 entries, it is unclear if this is intended or not as technically 0 is less than 100 but also it seems not meaningful to record when we don't skip any entries.

The relevant code is here:

err:
    if (total_skipped < 100)
        WT_STAT_CONN_DATA_INCR(session, cursor_next_skip_lt_100);
    else
        WT_STAT_CONN_DATA_INCR(session, cursor_next_skip_ge_100);

    WT_STAT_CONN_DATA_INCRV(session, cursor_next_skip_total, total_skipped);

If total skipped is 0 is it clear we still increment the skip_lt_100 stat. The same functionality exists in cursor prev.

The consensus in the comments means that we agree this should be fixed, the scope for fixing it will be:

• Fix the relevant if checks to be if (total_skipped != 0 && total_skipped < 100). For both cursor_next and cursor_prev.
• Fix broken tests that relied on those statistics. If too many tests break as a result then the ticket can be broken down further.