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-rw-r--r--sql/pgq/functions/pgq.maint_rotate_tables.sql6
1 files changed, 6 insertions, 0 deletions
diff --git a/sql/pgq/functions/pgq.maint_rotate_tables.sql b/sql/pgq/functions/pgq.maint_rotate_tables.sql
index d972a04e..d3cee739 100644
--- a/sql/pgq/functions/pgq.maint_rotate_tables.sql
+++ b/sql/pgq/functions/pgq.maint_rotate_tables.sql
@@ -30,6 +30,12 @@ begin
return 0;
end if;
+ -- if DB is in invalid state, stop
+ if txid_current() < cf.queue_switch_step1 then
+ raise exception 'queue % maint failure: step1=%, current=%',
+ i_queue_name, cf.queue_switch_step1, txid_current();
+ end if;
+
-- find lowest tick for that queue
select min(sub_last_tick) into lowest_tick_id
from pgq.subscription