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Commit 0df4eb3

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tvondratvondra
committed
Reinstate tests accidentally removed by e3fcca0
Commit e3fcca0 reverted modifications to HOT for BRIN, but it also removed a couple unrelated tests from stats.sql. Reinstate those tests. Reported-by: Peter Eisentraut
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‎src/test/regress/expected/stats.out

+242
Original file line numberDiff line numberDiff line change
@@ -554,4 +554,246 @@ SELECT pg_stat_get_live_tuples(:drop_stats_test_subxact_oid);
554554

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DROP TABLE trunc_stats_test, trunc_stats_test1, trunc_stats_test2, trunc_stats_test3, trunc_stats_test4;
556556
DROP TABLE prevstats;
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-----
558+
-- Test that various stats views are being properly populated
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-----
560+
-- Test that sessions is incremented when a new session is started in pg_stat_database
561+
SELECT sessions AS db_stat_sessions FROM pg_stat_database WHERE datname = (SELECT current_database()) \gset
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\c
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SELECT sessions > :db_stat_sessions FROM pg_stat_database WHERE datname = (SELECT current_database());
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?column?
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----------
566+
t
567+
(1 row)
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569+
-- Test pg_stat_bgwriter checkpointer-related stats, together with pg_stat_wal
570+
SELECT checkpoints_req AS rqst_ckpts_before FROM pg_stat_bgwriter \gset
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-- Test pg_stat_wal
572+
SELECT wal_bytes AS wal_bytes_before FROM pg_stat_wal \gset
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CREATE TABLE test_stats_temp AS SELECT 17;
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DROP TABLE test_stats_temp;
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-- Checkpoint twice: The checkpointer reports stats after reporting completion
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-- of the checkpoint. But after a second checkpoint we'll see at least the
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-- results of the first.
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CHECKPOINT;
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CHECKPOINT;
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SELECT checkpoints_req > :rqst_ckpts_before FROM pg_stat_bgwriter;
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?column?
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----------
583+
t
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(1 row)
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SELECT wal_bytes > :wal_bytes_before FROM pg_stat_wal;
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?column?
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----------
589+
t
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(1 row)
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-----
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-- Test that resetting stats works for reset timestamp
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-----
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-- Test that reset_slru with a specified SLRU works.
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SELECT stats_reset AS slru_commit_ts_reset_ts FROM pg_stat_slru WHERE name = 'CommitTs' \gset
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SELECT stats_reset AS slru_notify_reset_ts FROM pg_stat_slru WHERE name = 'Notify' \gset
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SELECT pg_stat_reset_slru('CommitTs');
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pg_stat_reset_slru
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--------------------
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(1 row)
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SELECT stats_reset > :'slru_commit_ts_reset_ts'::timestamptz FROM pg_stat_slru WHERE name = 'CommitTs';
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?column?
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----------
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t
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(1 row)
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SELECT stats_reset AS slru_commit_ts_reset_ts FROM pg_stat_slru WHERE name = 'CommitTs' \gset
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-- Test that multiple SLRUs are reset when no specific SLRU provided to reset function
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SELECT pg_stat_reset_slru(NULL);
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pg_stat_reset_slru
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--------------------
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(1 row)
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SELECT stats_reset > :'slru_commit_ts_reset_ts'::timestamptz FROM pg_stat_slru WHERE name = 'CommitTs';
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?column?
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----------
621+
t
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(1 row)
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SELECT stats_reset > :'slru_notify_reset_ts'::timestamptz FROM pg_stat_slru WHERE name = 'Notify';
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?column?
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----------
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t
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(1 row)
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-- Test that reset_shared with archiver specified as the stats type works
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SELECT stats_reset AS archiver_reset_ts FROM pg_stat_archiver \gset
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SELECT pg_stat_reset_shared('archiver');
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pg_stat_reset_shared
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----------------------
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(1 row)
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SELECT stats_reset > :'archiver_reset_ts'::timestamptz FROM pg_stat_archiver;
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?column?
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----------
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t
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(1 row)
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SELECT stats_reset AS archiver_reset_ts FROM pg_stat_archiver \gset
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-- Test that reset_shared with bgwriter specified as the stats type works
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SELECT stats_reset AS bgwriter_reset_ts FROM pg_stat_bgwriter \gset
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SELECT pg_stat_reset_shared('bgwriter');
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pg_stat_reset_shared
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----------------------
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(1 row)
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SELECT stats_reset > :'bgwriter_reset_ts'::timestamptz FROM pg_stat_bgwriter;
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?column?
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----------
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t
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(1 row)
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SELECT stats_reset AS bgwriter_reset_ts FROM pg_stat_bgwriter \gset
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-- Test that reset_shared with wal specified as the stats type works
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SELECT stats_reset AS wal_reset_ts FROM pg_stat_wal \gset
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SELECT pg_stat_reset_shared('wal');
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pg_stat_reset_shared
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----------------------
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(1 row)
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SELECT stats_reset > :'wal_reset_ts'::timestamptz FROM pg_stat_wal;
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?column?
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----------
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t
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(1 row)
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SELECT stats_reset AS wal_reset_ts FROM pg_stat_wal \gset
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-- Test that reset_shared with no specified stats type doesn't reset anything
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SELECT pg_stat_reset_shared(NULL);
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pg_stat_reset_shared
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----------------------
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680+
(1 row)
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SELECT stats_reset = :'archiver_reset_ts'::timestamptz FROM pg_stat_archiver;
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?column?
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----------
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t
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(1 row)
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SELECT stats_reset = :'bgwriter_reset_ts'::timestamptz FROM pg_stat_bgwriter;
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?column?
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----------
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t
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(1 row)
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SELECT stats_reset = :'wal_reset_ts'::timestamptz FROM pg_stat_wal;
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?column?
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----------
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t
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(1 row)
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-- Test that reset works for pg_stat_database
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-- Since pg_stat_database stats_reset starts out as NULL, reset it once first so we have something to compare it to
702+
SELECT pg_stat_reset();
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pg_stat_reset
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---------------
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(1 row)
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SELECT stats_reset AS db_reset_ts FROM pg_stat_database WHERE datname = (SELECT current_database()) \gset
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SELECT pg_stat_reset();
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pg_stat_reset
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---------------
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(1 row)
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SELECT stats_reset > :'db_reset_ts'::timestamptz FROM pg_stat_database WHERE datname = (SELECT current_database());
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?column?
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----------
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t
719+
(1 row)
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721+
----
722+
-- pg_stat_get_snapshot_timestamp behavior
723+
----
724+
BEGIN;
725+
SET LOCAL stats_fetch_consistency = snapshot;
726+
-- no snapshot yet, return NULL
727+
SELECT pg_stat_get_snapshot_timestamp();
728+
pg_stat_get_snapshot_timestamp
729+
--------------------------------
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731+
(1 row)
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733+
-- any attempt at accessing stats will build snapshot
734+
SELECT pg_stat_get_function_calls(0);
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pg_stat_get_function_calls
736+
----------------------------
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738+
(1 row)
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SELECT pg_stat_get_snapshot_timestamp() >= NOW();
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?column?
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----------
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t
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(1 row)
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-- shows NULL again after clearing
747+
SELECT pg_stat_clear_snapshot();
748+
pg_stat_clear_snapshot
749+
------------------------
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(1 row)
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SELECT pg_stat_get_snapshot_timestamp();
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pg_stat_get_snapshot_timestamp
755+
--------------------------------
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757+
(1 row)
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COMMIT;
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----
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-- pg_stat_have_stats behavior
762+
----
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-- fixed-numbered stats exist
764+
SELECT pg_stat_have_stats('bgwriter', 0, 0);
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pg_stat_have_stats
766+
--------------------
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t
768+
(1 row)
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-- unknown stats kinds error out
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SELECT pg_stat_have_stats('zaphod', 0, 0);
772+
ERROR: invalid statistics kind: "zaphod"
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-- db stats have objoid 0
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SELECT pg_stat_have_stats('database', (SELECT oid FROM pg_database WHERE datname = current_database()), 1);
775+
pg_stat_have_stats
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--------------------
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f
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(1 row)
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SELECT pg_stat_have_stats('database', (SELECT oid FROM pg_database WHERE datname = current_database()), 0);
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pg_stat_have_stats
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--------------------
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t
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(1 row)
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786+
-- ensure that stats accessors handle NULL input correctly
787+
SELECT pg_stat_get_replication_slot(NULL);
788+
pg_stat_get_replication_slot
789+
------------------------------
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(1 row)
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SELECT pg_stat_get_subscription_stats(NULL);
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pg_stat_get_subscription_stats
795+
--------------------------------
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(1 row)
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557799
-- End of Stats Test

‎src/test/regress/sql/stats.sql

+111
Original file line numberDiff line numberDiff line change
@@ -285,4 +285,115 @@ SELECT pg_stat_get_live_tuples(:drop_stats_test_subxact_oid);
285285

286286
DROP TABLE trunc_stats_test, trunc_stats_test1, trunc_stats_test2, trunc_stats_test3, trunc_stats_test4;
287287
DROP TABLE prevstats;
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289+
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-----
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-- Test that various stats views are being properly populated
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-----
293+
294+
-- Test that sessions is incremented when a new session is started in pg_stat_database
295+
SELECT sessions AS db_stat_sessions FROM pg_stat_database WHERE datname = (SELECT current_database()) \gset
296+
\c
297+
SELECT sessions > :db_stat_sessions FROM pg_stat_database WHERE datname = (SELECT current_database());
298+
299+
-- Test pg_stat_bgwriter checkpointer-related stats, together with pg_stat_wal
300+
SELECT checkpoints_req AS rqst_ckpts_before FROM pg_stat_bgwriter \gset
301+
302+
-- Test pg_stat_wal
303+
SELECT wal_bytes AS wal_bytes_before FROM pg_stat_wal \gset
304+
305+
CREATE TABLE test_stats_temp AS SELECT 17;
306+
DROP TABLE test_stats_temp;
307+
308+
-- Checkpoint twice: The checkpointer reports stats after reporting completion
309+
-- of the checkpoint. But after a second checkpoint we'll see at least the
310+
-- results of the first.
311+
CHECKPOINT;
312+
CHECKPOINT;
313+
314+
SELECT checkpoints_req > :rqst_ckpts_before FROM pg_stat_bgwriter;
315+
SELECT wal_bytes > :wal_bytes_before FROM pg_stat_wal;
316+
317+
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-----
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-- Test that resetting stats works for reset timestamp
320+
-----
321+
322+
-- Test that reset_slru with a specified SLRU works.
323+
SELECT stats_reset AS slru_commit_ts_reset_ts FROM pg_stat_slru WHERE name = 'CommitTs' \gset
324+
SELECT stats_reset AS slru_notify_reset_ts FROM pg_stat_slru WHERE name = 'Notify' \gset
325+
SELECT pg_stat_reset_slru('CommitTs');
326+
SELECT stats_reset > :'slru_commit_ts_reset_ts'::timestamptz FROM pg_stat_slru WHERE name = 'CommitTs';
327+
SELECT stats_reset AS slru_commit_ts_reset_ts FROM pg_stat_slru WHERE name = 'CommitTs' \gset
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-- Test that multiple SLRUs are reset when no specific SLRU provided to reset function
330+
SELECT pg_stat_reset_slru(NULL);
331+
SELECT stats_reset > :'slru_commit_ts_reset_ts'::timestamptz FROM pg_stat_slru WHERE name = 'CommitTs';
332+
SELECT stats_reset > :'slru_notify_reset_ts'::timestamptz FROM pg_stat_slru WHERE name = 'Notify';
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-- Test that reset_shared with archiver specified as the stats type works
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SELECT stats_reset AS archiver_reset_ts FROM pg_stat_archiver \gset
336+
SELECT pg_stat_reset_shared('archiver');
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SELECT stats_reset > :'archiver_reset_ts'::timestamptz FROM pg_stat_archiver;
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SELECT stats_reset AS archiver_reset_ts FROM pg_stat_archiver \gset
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-- Test that reset_shared with bgwriter specified as the stats type works
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SELECT stats_reset AS bgwriter_reset_ts FROM pg_stat_bgwriter \gset
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SELECT pg_stat_reset_shared('bgwriter');
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SELECT stats_reset > :'bgwriter_reset_ts'::timestamptz FROM pg_stat_bgwriter;
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SELECT stats_reset AS bgwriter_reset_ts FROM pg_stat_bgwriter \gset
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-- Test that reset_shared with wal specified as the stats type works
347+
SELECT stats_reset AS wal_reset_ts FROM pg_stat_wal \gset
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SELECT pg_stat_reset_shared('wal');
349+
SELECT stats_reset > :'wal_reset_ts'::timestamptz FROM pg_stat_wal;
350+
SELECT stats_reset AS wal_reset_ts FROM pg_stat_wal \gset
351+
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-- Test that reset_shared with no specified stats type doesn't reset anything
353+
SELECT pg_stat_reset_shared(NULL);
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SELECT stats_reset = :'archiver_reset_ts'::timestamptz FROM pg_stat_archiver;
355+
SELECT stats_reset = :'bgwriter_reset_ts'::timestamptz FROM pg_stat_bgwriter;
356+
SELECT stats_reset = :'wal_reset_ts'::timestamptz FROM pg_stat_wal;
357+
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-- Test that reset works for pg_stat_database
359+
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-- Since pg_stat_database stats_reset starts out as NULL, reset it once first so we have something to compare it to
361+
SELECT pg_stat_reset();
362+
SELECT stats_reset AS db_reset_ts FROM pg_stat_database WHERE datname = (SELECT current_database()) \gset
363+
SELECT pg_stat_reset();
364+
SELECT stats_reset > :'db_reset_ts'::timestamptz FROM pg_stat_database WHERE datname = (SELECT current_database());
365+
366+
367+
----
368+
-- pg_stat_get_snapshot_timestamp behavior
369+
----
370+
BEGIN;
371+
SET LOCAL stats_fetch_consistency = snapshot;
372+
-- no snapshot yet, return NULL
373+
SELECT pg_stat_get_snapshot_timestamp();
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-- any attempt at accessing stats will build snapshot
375+
SELECT pg_stat_get_function_calls(0);
376+
SELECT pg_stat_get_snapshot_timestamp() >= NOW();
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-- shows NULL again after clearing
378+
SELECT pg_stat_clear_snapshot();
379+
SELECT pg_stat_get_snapshot_timestamp();
380+
COMMIT;
381+
382+
----
383+
-- pg_stat_have_stats behavior
384+
----
385+
-- fixed-numbered stats exist
386+
SELECT pg_stat_have_stats('bgwriter', 0, 0);
387+
-- unknown stats kinds error out
388+
SELECT pg_stat_have_stats('zaphod', 0, 0);
389+
-- db stats have objoid 0
390+
SELECT pg_stat_have_stats('database', (SELECT oid FROM pg_database WHERE datname = current_database()), 1);
391+
SELECT pg_stat_have_stats('database', (SELECT oid FROM pg_database WHERE datname = current_database()), 0);
392+
393+
394+
-- ensure that stats accessors handle NULL input correctly
395+
SELECT pg_stat_get_replication_slot(NULL);
396+
SELECT pg_stat_get_subscription_stats(NULL);
397+
398+
288399
-- End of Stats Test

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