NOTE: Per T337446#8882092, replag is likely to keep increasing until mid next week. This only affects s1, s2, s3, s4, s5 and s7. The rest of the sections should be working as normal.
db1154 and db1155 has their replication broken due to different errors. For example for s5:
PROBLEM - MariaDB Replica SQL: s5 on db1154 is CRITICAL: CRITICAL slave_sql_state Slave_SQL_Running: No, Errno: 1032, Errmsg: Could not execute Delete_rows_v1 event on table dewiki.flaggedpage_pending: Cant find record in flaggedpage_pending, Error_code: 1032: handler error HA_ERR_KEY_NOT_FOUND: the events master log db1161-bin.001646, end_log_pos 385492288
for s4 and s7 also the replication is broken but on a different table.
Section with broken replication are: s1, s2, s5, s7
[x] s1 (caught up)
[x] s3 (caught up)
[x] s5 (caught up)
[x] s2 (caught up)
 s4 (recloning)
[x] s7 (caught up)
[x] clouddb1017 (catching up)
 clouddb1015 (needs recloning)
 clouddb1019 (needs recloning)
 clouddb1021 (needs recloning)