Parsed test spec with 2 sessions

starting permutation: v_base r_lock v_del v_vac v_vac v_vac v_held r_end v_vac v_vac v_freed v_count
merged
------
t     
(1 row)

step v_base: CREATE TEMP TABLE base AS SELECT pg_relation_size('vg_fts') AS s0;
step r_lock: BEGIN; SELECT count(*) > 0 AS found FROM vg WHERE d @@@ 'alpha'::ftsquery;
found
-----
t    
(1 row)

step v_del: DELETE FROM vg WHERE id % 97 = 0;
step v_vac: VACUUM vg;
step v_vac: VACUUM vg;
step v_vac: VACUUM vg;
step v_held: SELECT pg_relation_size('vg_fts') <= s0 + 16 * 8192 AS no_growth_while_locked FROM base;
no_growth_while_locked
----------------------
t                     
(1 row)

step r_end: COMMIT;
step v_vac: VACUUM vg;
step v_vac: VACUUM vg;
step v_freed: SELECT pg_relation_size('vg_fts') < s0 * 3 / 4 AS reclaimed_after_unlock FROM base;
reclaimed_after_unlock
----------------------
t                     
(1 row)

step v_count: SET enable_seqscan = off;
                  SELECT (SELECT count(*) FROM vg WHERE d @@@ 'alpha'::ftsquery)
                       = (SELECT count(*) FROM vg WHERE fts_match(d, 'alpha'::ftsquery)) AS index_matches_heap;
index_matches_heap
------------------
t                 
(1 row)