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Diffstat (limited to 'contrib/test_decoding/expected/stats.out')
| -rw-r--r-- | contrib/test_decoding/expected/stats.out | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/contrib/test_decoding/expected/stats.out b/contrib/test_decoding/expected/stats.out new file mode 100644 index 0000000..78d3642 --- /dev/null +++ b/contrib/test_decoding/expected/stats.out @@ -0,0 +1,149 @@ +-- predictability +SET synchronous_commit = on; +SELECT 'init' FROM + pg_create_logical_replication_slot('regression_slot_stats1', 'test_decoding') s1, + pg_create_logical_replication_slot('regression_slot_stats2', 'test_decoding') s2, + pg_create_logical_replication_slot('regression_slot_stats3', 'test_decoding') s3; + ?column? +---------- + init +(1 row) + +CREATE TABLE stats_test(data text); +-- non-spilled xact +SET logical_decoding_work_mem to '64MB'; +INSERT INTO stats_test values(1); +SELECT count(*) FROM pg_logical_slot_get_changes('regression_slot_stats1', NULL, NULL, 'skip-empty-xacts', '1'); + count +------- + 3 +(1 row) + +SELECT count(*) FROM pg_logical_slot_get_changes('regression_slot_stats2', NULL, NULL, 'skip-empty-xacts', '1'); + count +------- + 3 +(1 row) + +SELECT count(*) FROM pg_logical_slot_get_changes('regression_slot_stats3', NULL, NULL, 'skip-empty-xacts', '1'); + count +------- + 3 +(1 row) + +SELECT pg_stat_force_next_flush(); + pg_stat_force_next_flush +-------------------------- + +(1 row) + +SELECT slot_name, spill_txns = 0 AS spill_txns, spill_count = 0 AS spill_count, total_txns > 0 AS total_txns, total_bytes > 0 AS total_bytes FROM pg_stat_replication_slots ORDER BY slot_name; + slot_name | spill_txns | spill_count | total_txns | total_bytes +------------------------+------------+-------------+------------+------------- + regression_slot_stats1 | t | t | t | t + regression_slot_stats2 | t | t | t | t + regression_slot_stats3 | t | t | t | t +(3 rows) + +RESET logical_decoding_work_mem; +-- reset stats for one slot, others should be unaffected +SELECT pg_stat_reset_replication_slot('regression_slot_stats1'); + pg_stat_reset_replication_slot +-------------------------------- + +(1 row) + +SELECT slot_name, spill_txns = 0 AS spill_txns, spill_count = 0 AS spill_count, total_txns > 0 AS total_txns, total_bytes > 0 AS total_bytes FROM pg_stat_replication_slots ORDER BY slot_name; + slot_name | spill_txns | spill_count | total_txns | total_bytes +------------------------+------------+-------------+------------+------------- + regression_slot_stats1 | t | t | f | f + regression_slot_stats2 | t | t | t | t + regression_slot_stats3 | t | t | t | t +(3 rows) + +-- reset stats for all slots +SELECT pg_stat_reset_replication_slot(NULL); + pg_stat_reset_replication_slot +-------------------------------- + +(1 row) + +SELECT slot_name, spill_txns = 0 AS spill_txns, spill_count = 0 AS spill_count, total_txns > 0 AS total_txns, total_bytes > 0 AS total_bytes FROM pg_stat_replication_slots ORDER BY slot_name; + slot_name | spill_txns | spill_count | total_txns | total_bytes +------------------------+------------+-------------+------------+------------- + regression_slot_stats1 | t | t | f | f + regression_slot_stats2 | t | t | f | f + regression_slot_stats3 | t | t | f | f +(3 rows) + +-- verify accessing/resetting stats for non-existent slot does something reasonable +SELECT * FROM pg_stat_get_replication_slot('do-not-exist'); + slot_name | spill_txns | spill_count | spill_bytes | stream_txns | stream_count | stream_bytes | total_txns | total_bytes | stats_reset +--------------+------------+-------------+-------------+-------------+--------------+--------------+------------+-------------+------------- + do-not-exist | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | +(1 row) + +SELECT pg_stat_reset_replication_slot('do-not-exist'); +ERROR: replication slot "do-not-exist" does not exist +SELECT * FROM pg_stat_get_replication_slot('do-not-exist'); + slot_name | spill_txns | spill_count | spill_bytes | stream_txns | stream_count | stream_bytes | total_txns | total_bytes | stats_reset +--------------+------------+-------------+-------------+-------------+--------------+--------------+------------+-------------+------------- + do-not-exist | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | +(1 row) + +-- spilling the xact +BEGIN; +INSERT INTO stats_test SELECT 'serialize-topbig--1:'||g.i FROM generate_series(1, 5000) g(i); +COMMIT; +SELECT count(*) FROM pg_logical_slot_peek_changes('regression_slot_stats1', NULL, NULL, 'skip-empty-xacts', '1'); + count +------- + 5002 +(1 row) + +-- Check stats. We can't test the exact stats count as that can vary if any +-- background transaction (say by autovacuum) happens in parallel to the main +-- transaction. +SELECT pg_stat_force_next_flush(); + pg_stat_force_next_flush +-------------------------- + +(1 row) + +SELECT slot_name, spill_txns > 0 AS spill_txns, spill_count > 0 AS spill_count FROM pg_stat_replication_slots; + slot_name | spill_txns | spill_count +------------------------+------------+------------- + regression_slot_stats1 | t | t + regression_slot_stats2 | f | f + regression_slot_stats3 | f | f +(3 rows) + +-- Ensure stats can be repeatedly accessed using the same stats snapshot. See +-- https://postgr.es/m/20210317230447.c7uc4g3vbs4wi32i%40alap3.anarazel.de +BEGIN; +SELECT slot_name FROM pg_stat_replication_slots; + slot_name +------------------------ + regression_slot_stats1 + regression_slot_stats2 + regression_slot_stats3 +(3 rows) + +SELECT slot_name FROM pg_stat_replication_slots; + slot_name +------------------------ + regression_slot_stats1 + regression_slot_stats2 + regression_slot_stats3 +(3 rows) + +COMMIT; +DROP TABLE stats_test; +SELECT pg_drop_replication_slot('regression_slot_stats1'), + pg_drop_replication_slot('regression_slot_stats2'), + pg_drop_replication_slot('regression_slot_stats3'); + pg_drop_replication_slot | pg_drop_replication_slot | pg_drop_replication_slot +--------------------------+--------------------------+-------------------------- + | | +(1 row) + |