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Disable xids and empty transactions in TAP test
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Instead of filtering the output of `pg_logical_slot_get_changes` we set
the option `skip-empty-xacts` and clear `include-xids` to get stable
tests.

Since the option 'skip-empty-xacts' is set, this changes the order of
messages since the BEGIN of a transaction is not generated until the
decoder plugin can see that the transaction started and messages do not
count as part of a transaction.

We also remove transaction start and end marker (and strip trailing and
leading whitespace) since these will appear in different places
depending on the PostgreSQL version and they are not important for the
correctness of the test.
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@mkindahl
mkindahl committed Sep 19, 2024
1 parent c2fc403 commit 5cd23f9
Showing 1 changed file with 48 additions and 60 deletions.
108 changes: 48 additions & 60 deletions tsl/test/t/002_logrepl_decomp_marker.pl
View file
Original file line number Diff line number Diff line change
Expand Up @@ -30,23 +30,34 @@ sub query_generates_wal

$db->safe_psql('postgres', $query);
my $result = $db->safe_psql('postgres',
qq/SELECT data FROM pg_logical_slot_get_changes('slot', NULL, NULL);/
qq/SELECT data FROM pg_logical_slot_get_changes('slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');/
);
$result =~ s/\s+creation_time.*//g
; # creation_time is non-deterministic, so strip it from wal (it's always the final column)
$result =~ s/(BEGIN|COMMIT) \d+/$1/g
; # BEGIN/COMMIT statements contain the statement number, which we don't care about

# Remove BEGIN/COMMIT from output since there are only single
# transactions in the output and the only interesting part from a
# testing perspective are the other messages.
$result =~ s/^(BEGIN|COMMIT).*\n?//gm;

# creation_time is non-deterministic, so strip it from wal (it's
# always the final column)
$result =~ s/\s+creation_time.*//g;

# Strip leading and trailing whitespace
$result =~ s/^\s+|\s+$//g;

is($result, $expected_wal, $description);
}

sub discard_wal
{
$db->safe_psql('postgres',
qq/SELECT data FROM pg_logical_slot_get_changes('slot', NULL, NULL);/
qq/SELECT data FROM pg_logical_slot_get_changes('slot', NULL, NULL, 'include-xids', '0', 'skip-empty-xacts', '1');/
);
}

my $server_version = 0 + $db->safe_psql('postgres',
"select current_setting('server_version_num')::int");

# stop background jobs because they can scribble in our WAL
run_queries(
qq/
Expand All @@ -67,41 +78,35 @@ sub discard_wal
query_generates_wal(
"insert into plain chunk",
qq/INSERT INTO metrics VALUES ('2023-07-01T00:00:00Z', 1, 1.0);/,
qq(BEGIN
table _timescaledb_catalog.dimension_slice: INSERT: id[integer]:1 dimension_id[integer]:1 range_start[bigint]:1687996800000000 range_end[bigint]:1688601600000000
qq(table _timescaledb_catalog.dimension_slice: INSERT: id[integer]:1 dimension_id[integer]:1 range_start[bigint]:1687996800000000 range_end[bigint]:1688601600000000
table _timescaledb_catalog.chunk: INSERT: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:null dropped[boolean]:false status[integer]:0 osm_chunk[boolean]:false
table _timescaledb_catalog.chunk_constraint: INSERT: chunk_id[integer]:1 dimension_slice_id[integer]:1 constraint_name[name]:'constraint_1' hypertable_constraint_name[name]:null
table _timescaledb_catalog.chunk_index: INSERT: chunk_id[integer]:1 index_name[name]:'_hyper_1_1_chunk_metrics_time_idx' hypertable_id[integer]:1 hypertable_index_name[name]:'metrics_time_idx'
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:1
COMMIT)
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:1)
);

query_generates_wal(
"compress chunk",
qq(SELECT compress_chunk('_timescaledb_internal._hyper_1_1_chunk'::regclass, TRUE);),
qq(BEGIN
message: transactional: 1 prefix: ::timescaledb-compression-start, sz: 0 content:
qq(message: transactional: 1 prefix: ::timescaledb-compression-start, sz: 0 content:
table _timescaledb_catalog.chunk: INSERT: id[integer]:2 hypertable_id[integer]:2 schema_name[name]:'_timescaledb_internal' table_name[name]:'compress_hyper_2_2_chunk' compressed_chunk_id[integer]:null dropped[boolean]:false status[integer]:0 osm_chunk[boolean]:false
table _timescaledb_catalog.compression_settings: INSERT: relid[regclass]:'_timescaledb_internal.compress_hyper_2_2_chunk' segmentby[text[]]:'{device_id}' orderby[text[]]:'{time}' orderby_desc[boolean[]]:'{f}' orderby_nullsfirst[boolean[]]:'{f}'
table _timescaledb_internal.compress_hyper_2_2_chunk: INSERT: _ts_meta_count[integer]:1 _ts_meta_sequence_num[integer]:10 device_id[bigint]:1 _ts_meta_min_1[timestamp with time zone]:'2023-06-30 17:00:00-07' _ts_meta_max_1[timestamp with time zone]:'2023-06-30 17:00:00-07' "time"[_timescaledb_internal.compressed_data]:'BAAAAqJgYhxAAAAComBiHEAAAAAAAQAAAAEAAAAAAAAADgAFRMDEOIAA' value[_timescaledb_internal.compressed_data]:'AwA/8AAAAAAAAAAAAAEAAAABAAAAAAAAAAEAAAAAAAAAAQAAAAEAAAABAAAAAAAAAAEAAAAAAAAAAQAAAAEGAAAAAAAAAAIAAAABAAAAAQAAAAAAAAAEAAAAAAAAAAoAAAABCgAAAAAAAAP/'
table _timescaledb_catalog.compression_chunk_size: INSERT: chunk_id[integer]:1 compressed_chunk_id[integer]:2 uncompressed_heap_size[bigint]:8192 uncompressed_toast_size[bigint]:0 uncompressed_index_size[bigint]:16384 compressed_heap_size[bigint]:16384 compressed_toast_size[bigint]:8192 compressed_index_size[bigint]:16384 numrows_pre_compression[bigint]:1 numrows_post_compression[bigint]:1 numrows_frozen_immediately[bigint]:1
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:2 dropped[boolean]:false status[integer]:1 osm_chunk[boolean]:false
message: transactional: 1 prefix: ::timescaledb-compression-end, sz: 0 content:
COMMIT)
message: transactional: 1 prefix: ::timescaledb-compression-end, sz: 0 content:)
);

query_generates_wal(
"decompress chunk",
qq(SELECT decompress_chunk('_timescaledb_internal._hyper_1_1_chunk'::regclass, TRUE);),
qq(BEGIN
message: transactional: 1 prefix: ::timescaledb-decompression-start, sz: 0 content:
qq(message: transactional: 1 prefix: ::timescaledb-decompression-start, sz: 0 content:
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_catalog.compression_chunk_size: DELETE: chunk_id[integer]:1
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:null dropped[boolean]:false status[integer]:0 osm_chunk[boolean]:false
table _timescaledb_catalog.compression_settings: DELETE: relid[regclass]:'_timescaledb_internal.compress_hyper_2_2_chunk'
table _timescaledb_catalog.chunk: DELETE: id[integer]:2
message: transactional: 1 prefix: ::timescaledb-decompression-end, sz: 0 content:
COMMIT)
message: transactional: 1 prefix: ::timescaledb-decompression-end, sz: 0 content:)
);

run_queries(
Expand All @@ -112,88 +117,77 @@ sub discard_wal
query_generates_wal(
"recompress chunk (NOOP)",
qq(SELECT compress_chunk('_timescaledb_internal._hyper_1_1_chunk'::regclass, TRUE);),
qq(BEGIN
message: transactional: 1 prefix: ::timescaledb-compression-start, sz: 0 content:
message: transactional: 1 prefix: ::timescaledb-compression-end, sz: 0 content:
COMMIT),);
qq(message: transactional: 1 prefix: ::timescaledb-compression-start, sz: 0 content:
message: transactional: 1 prefix: ::timescaledb-compression-end, sz: 0 content:),
);

query_generates_wal(
"insert into uncompressed chunk",
qq(INSERT INTO metrics VALUES ('2023-07-01T01:00:00Z', 1, 1.0);),
qq(BEGIN
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 18:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:3 dropped[boolean]:false status[integer]:9 osm_chunk[boolean]:false
COMMIT),);
qq(table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 18:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:3 dropped[boolean]:false status[integer]:9 osm_chunk[boolean]:false),
);

query_generates_wal(
"recompress chunk",
qq(SELECT compress_chunk('_timescaledb_internal._hyper_1_1_chunk'::regclass, TRUE);),
qq(BEGIN
message: transactional: 1 prefix: ::timescaledb-compression-start, sz: 0 content:
qq(message: transactional: 1 prefix: ::timescaledb-compression-start, sz: 0 content:
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:3 dropped[boolean]:false status[integer]:1 osm_chunk[boolean]:false
table _timescaledb_internal._hyper_1_1_chunk: DELETE: "time"[timestamp with time zone]:'2023-06-30 18:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_internal.compress_hyper_2_3_chunk: DELETE: (no-tuple-data)
table _timescaledb_internal.compress_hyper_2_3_chunk: INSERT: _ts_meta_count[integer]:2 _ts_meta_sequence_num[integer]:10 device_id[bigint]:1 _ts_meta_min_1[timestamp with time zone]:'2023-06-30 17:00:00-07' _ts_meta_max_1[timestamp with time zone]:'2023-06-30 18:00:00-07' "time"[_timescaledb_internal.compressed_data]:'BAAAAqJhOK/kAAAAAADWk6QAAAAAAgAAAAIAAAAAAAAA7gAFRMDEOIAAAAVEvxcRN/8=' value[_timescaledb_internal.compressed_data]:'AwA/8AAAAAAAAAAAAAIAAAABAAAAAAAAAAEAAAAAAAAAAwAAAAIAAAABAAAAAAAAAAEAAAAAAAAAAwAAAAEMAAAAAAAAD8IAAAACAAAAAQAAAAAAAAAEAAAAAAAAAAoAAAABCgAAAAAAAAP/'
message: transactional: 1 prefix: ::timescaledb-compression-end, sz: 0 content:
COMMIT)
message: transactional: 1 prefix: ::timescaledb-compression-end, sz: 0 content:)
);

query_generates_wal(
"insert into uncompressed chunk 2",
qq(INSERT INTO metrics VALUES ('2023-07-01T02:00:00Z', 1, 1.0);),
qq(BEGIN
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 19:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:3 dropped[boolean]:false status[integer]:9 osm_chunk[boolean]:false
COMMIT),);
qq(table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 19:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:3 dropped[boolean]:false status[integer]:9 osm_chunk[boolean]:false),
);

query_generates_wal(
"update rows in uncompressed and compressed chunk",
qq(UPDATE metrics SET value = 22 WHERE time IN ('2023-07-01T00:00:00Z', '2023-07-01T02:00:00Z');),
qq(BEGIN
message: transactional: 1 prefix: ::timescaledb-decompression-start, sz: 0 content:
qq(message: transactional: 1 prefix: ::timescaledb-decompression-start, sz: 0 content:
table _timescaledb_internal.compress_hyper_2_3_chunk: DELETE: (no-tuple-data)
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 18:00:00-07' device_id[bigint]:1 value[double precision]:1
message: transactional: 1 prefix: ::timescaledb-decompression-end, sz: 0 content:
table _timescaledb_internal._hyper_1_1_chunk: UPDATE: old-key: "time"[timestamp with time zone]:'2023-06-30 19:00:00-07' device_id[bigint]:1 value[double precision]:1 new-tuple: "time"[timestamp with time zone]:'2023-06-30 19:00:00-07' device_id[bigint]:1 value[double precision]:22
table _timescaledb_internal._hyper_1_1_chunk: UPDATE: old-key: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:1 new-tuple: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:22
COMMIT),);
table _timescaledb_internal._hyper_1_1_chunk: UPDATE: old-key: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:1 new-tuple: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:22),
);

query_generates_wal(
"compress chunk after update",
qq(SELECT compress_chunk('_timescaledb_internal._hyper_1_1_chunk'::regclass, TRUE);),
qq(BEGIN
message: transactional: 1 prefix: ::timescaledb-compression-start, sz: 0 content:
qq(message: transactional: 1 prefix: ::timescaledb-compression-start, sz: 0 content:
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:3 dropped[boolean]:false status[integer]:1 osm_chunk[boolean]:false
table _timescaledb_internal._hyper_1_1_chunk: DELETE: "time"[timestamp with time zone]:'2023-06-30 18:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_internal._hyper_1_1_chunk: DELETE: "time"[timestamp with time zone]:'2023-06-30 19:00:00-07' device_id[bigint]:1 value[double precision]:22
table _timescaledb_internal._hyper_1_1_chunk: DELETE: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:22
table _timescaledb_internal.compress_hyper_2_3_chunk: INSERT: _ts_meta_count[integer]:3 _ts_meta_sequence_num[integer]:10 device_id[bigint]:1 _ts_meta_min_1[timestamp with time zone]:'2023-06-30 17:00:00-07' _ts_meta_max_1[timestamp with time zone]:'2023-06-30 19:00:00-07' "time"[_timescaledb_internal.compressed_data]:'BAAAAqJiD0OIAAAAAADWk6QAAAAAAwAAAAMAAAAAAAAB7gAFRMDEOIAAAAVEvxcRN/8AAAAAAAAAAA==' value[_timescaledb_internal.compressed_data]:'AwBANgAAAAAAAAAAAAMAAAABAAAAAAAAAAEAAAAAAAAABwAAAAMAAAABAAAAAAAAAAEAAAAAAAAABwAAAAESAAAAAAAAEEEAAAADAAAAAQAAAAAAAAAEAAAAAAAADu4AAAABKgAAA/4/+OAb'
message: transactional: 1 prefix: ::timescaledb-compression-end, sz: 0 content:
COMMIT)
message: transactional: 1 prefix: ::timescaledb-compression-end, sz: 0 content:)
);

query_generates_wal(
"insert into uncompressed chunk 3",
qq(INSERT INTO metrics VALUES ('2023-07-01T03:00:00Z', 1, 1.0);),
qq(BEGIN
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 20:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:3 dropped[boolean]:false status[integer]:9 osm_chunk[boolean]:false
COMMIT),);
qq(table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 20:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:3 dropped[boolean]:false status[integer]:9 osm_chunk[boolean]:false),
);

query_generates_wal(
"delete row in compressed chunk",
qq(DELETE FROM metrics WHERE time IN ('2023-07-01T00:00:00Z', '2023-07-01T03:00:00Z');),
qq(BEGIN
message: transactional: 1 prefix: ::timescaledb-decompression-start, sz: 0 content:
qq(message: transactional: 1 prefix: ::timescaledb-decompression-start, sz: 0 content:
table _timescaledb_internal.compress_hyper_2_3_chunk: DELETE: (no-tuple-data)
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:22
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 18:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 19:00:00-07' device_id[bigint]:1 value[double precision]:22
message: transactional: 1 prefix: ::timescaledb-decompression-end, sz: 0 content:
table _timescaledb_internal._hyper_1_1_chunk: DELETE: "time"[timestamp with time zone]:'2023-06-30 20:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_internal._hyper_1_1_chunk: DELETE: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:22
COMMIT)
table _timescaledb_internal._hyper_1_1_chunk: DELETE: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:22)
);

# switch to PK on time for insert with PK decompression test
Expand All @@ -215,9 +209,7 @@ sub discard_wal
query_generates_wal(
"insert into compressed chunk with pk forces decompression",
qq/INSERT INTO metrics VALUES ('2023-07-01 00:00:00Z', 1, 5555) ON CONFLICT DO NOTHING;/,
qq/BEGIN
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:4 dropped[boolean]:false status[integer]:9 osm_chunk[boolean]:false
COMMIT/
qq/table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:4 dropped[boolean]:false status[integer]:9 osm_chunk[boolean]:false/
);

# Disable marker generation through GUC
Expand All @@ -228,22 +220,18 @@ sub discard_wal
query_generates_wal(
"compress chunk after disabling markers",
qq(SELECT compress_chunk('_timescaledb_internal._hyper_1_1_chunk'::regclass, TRUE);),
qq(BEGIN
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:4 dropped[boolean]:false status[integer]:1 osm_chunk[boolean]:false
COMMIT)
qq(table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:4 dropped[boolean]:false status[integer]:1 osm_chunk[boolean]:false)
);

query_generates_wal(
"decompress chunk after disabling markers",
qq(SELECT decompress_chunk('_timescaledb_internal._hyper_1_1_chunk'::regclass, TRUE);),
qq(BEGIN
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:1
qq(table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-06-30 17:00:00-07' device_id[bigint]:1 value[double precision]:1
table _timescaledb_internal._hyper_1_1_chunk: INSERT: "time"[timestamp with time zone]:'2023-07-01 05:00:00-07' device_id[bigint]:1 value[double precision]:2
table _timescaledb_catalog.compression_chunk_size: DELETE: chunk_id[integer]:1
table _timescaledb_catalog.chunk: UPDATE: id[integer]:1 hypertable_id[integer]:1 schema_name[name]:'_timescaledb_internal' table_name[name]:'_hyper_1_1_chunk' compressed_chunk_id[integer]:null dropped[boolean]:false status[integer]:0 osm_chunk[boolean]:false
table _timescaledb_catalog.compression_settings: DELETE: relid[regclass]:'_timescaledb_internal.compress_hyper_3_4_chunk'
table _timescaledb_catalog.chunk: DELETE: id[integer]:4
COMMIT)
table _timescaledb_catalog.chunk: DELETE: id[integer]:4)
);

# re-enable background jobs
Expand Down

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