Hi, On 2021-06-08 19:18:18 -0500, Justin Pryzby wrote: > I reproduced the issue on a new/fresh cluster like this: > > ./postgres -D data -c autovacuum_naptime=1 -c > autovacuum_analyze_scale_factor=0.005 -c log_autovacuum_min_duration=-1 > psql -h /tmp postgres -c "CREATE TABLE t(i int); INSERT INTO t SELECT > generate_series(1,99999); CREATE INDEX ON t(i);" > time while psql -h /tmp postgres -qc 'REINDEX (CONCURRENTLY) INDEX t_i_idx'; > do :; done& > time while psql -h /tmp postgres -qc 'ANALYZE pg_attribute'; do :; done& > > TRAP: FailedAssertion("restarts == 0", File: "vacuumlazy.c", Line: 1803, PID: > 10367)
Has anybody looked at getting test coverage for the retry path? Not with the goal of triggering an assertion, just to have at least basic coverage. The problem with writing a test is likely to find a way to halfway reliably schedule a transaction abort after pruning, but before the tuple-removal loop? Does anybody see a trick to do so? Greetings, Andres Freund