Parsed test spec with 3 sessions

starting permutation: hb wb wbp wi oseg hc wc orows
step hb: BEGIN; SELECT sift._test_tbl_hold_maint('iso_bp');
_test_tbl_hold_maint
--------------------
                    
(1 row)

step wb: BEGIN; SET sift.table_max_segments = 16; SET sift.table_write_buffer_limit = 2048;
step wbp: SET LOCAL sift.table_backpressure = 75;
step wi: INSERT INTO iso_bp SELECT g, repeat('x', 1000) FROM generate_series(1, 40000) g; <waiting ...>
step oseg: SELECT count(*) AS entries FROM sift.table_segments('iso_bp');
entries
-------
     13
(1 row)

step hc: COMMIT;
step wi: <... completed>
step wc: COMMIT;
step orows: SELECT count(*) AS visible FROM iso_bp;
visible
-------
  40000
(1 row)


starting permutation: hb wb wi oseg hc wc orows
step hb: BEGIN; SELECT sift._test_tbl_hold_maint('iso_bp');
_test_tbl_hold_maint
--------------------
                    
(1 row)

step wb: BEGIN; SET sift.table_max_segments = 16; SET sift.table_write_buffer_limit = 2048;
step wi: INSERT INTO iso_bp SELECT g, repeat('x', 1000) FROM generate_series(1, 40000) g; <waiting ...>
step oseg: SELECT count(*) AS entries FROM sift.table_segments('iso_bp');
entries
-------
     14
(1 row)

step hc: COMMIT;
step wi: <... completed>
step wc: COMMIT;
step orows: SELECT count(*) AS visible FROM iso_bp;
visible
-------
  40000
(1 row)