Postgresql logical replication 'key already exists' error
Faced with an issue - on slave from time to time catch an error, that replication process cannot insert row into table with primary key because this id value already exists.
Select with this id returns 0 rows (so probably it was inserted but not committed)
Slave restart didn't help, same error again when replication starts.
So on this moment replication enters in infinite loop and stops.
Are there any clues how it might happen?
p.s. on slave no one has access to write except replication system user
p.p.s. I have a feeling like in wal this insert added twice. Is it possible? On prod database, this table has same structure, id generated via sequence, and it is primary key there too
postgresql replication logical-replication
edited Nov 13 '18 at 8:16
a_horse_with_no_name
305k46466562
asked Nov 13 '18 at 5:33
Дмитрий КудрявцевДмитрий Кудрявцев
263
add a comment |
Faced with an issue - on slave from time to time catch an error, that replication process cannot insert row into table with primary key because this id value already exists.
Select with this id returns 0 rows (so probably it was inserted but not committed)
Slave restart didn't help, same error again when replication starts.
So on this moment replication enters in infinite loop and stops.
Are there any clues how it might happen?
p.s. on slave no one has access to write except replication system user
p.p.s. I have a feeling like in wal this insert added twice. Is it possible? On prod database, this table has same structure, id generated via sequence, and it is primary key there too
postgresql replication logical-replication
edited Nov 13 '18 at 8:16
a_horse_with_no_name
305k46466562
asked Nov 13 '18 at 5:33
Дмитрий КудрявцевДмитрий Кудрявцев
263
add a comment |
Faced with an issue - on slave from time to time catch an error, that replication process cannot insert row into table with primary key because this id value already exists.
Select with this id returns 0 rows (so probably it was inserted but not committed)
Slave restart didn't help, same error again when replication starts.
So on this moment replication enters in infinite loop and stops.
Are there any clues how it might happen?
p.s. on slave no one has access to write except replication system user
p.p.s. I have a feeling like in wal this insert added twice. Is it possible? On prod database, this table has same structure, id generated via sequence, and it is primary key there too
postgresql replication logical-replication
edited Nov 13 '18 at 8:16
a_horse_with_no_name
305k46466562
asked Nov 13 '18 at 5:33
Дмитрий КудрявцевДмитрий Кудрявцев
263
Faced with an issue - on slave from time to time catch an error, that replication process cannot insert row into table with primary key because this id value already exists.
Select with this id returns 0 rows (so probably it was inserted but not committed)
Slave restart didn't help, same error again when replication starts.
So on this moment replication enters in infinite loop and stops.
Are there any clues how it might happen?
p.s. on slave no one has access to write except replication system user
p.p.s. I have a feeling like in wal this insert added twice. Is it possible? On prod database, this table has same structure, id generated via sequence, and it is primary key there too
postgresql replication logical-replication
postgresql replication logical-replication
edited Nov 13 '18 at 8:16
a_horse_with_no_name
305k46466562
asked Nov 13 '18 at 5:33
Дмитрий КудрявцевДмитрий Кудрявцев
263
edited Nov 13 '18 at 8:16
a_horse_with_no_name
305k46466562
asked Nov 13 '18 at 5:33
Дмитрий КудрявцевДмитрий Кудрявцев
263
edited Nov 13 '18 at 8:16
a_horse_with_no_name
305k46466562
edited Nov 13 '18 at 8:16
a_horse_with_no_name
305k46466562
edited Nov 13 '18 at 8:16
a_horse_with_no_name
305k46466562
305k46466562
asked Nov 13 '18 at 5:33
Дмитрий КудрявцевДмитрий Кудрявцев
263
asked Nov 13 '18 at 5:33
Дмитрий КудрявцевДмитрий Кудрявцев
263
asked Nov 13 '18 at 5:33
Дмитрий КудрявцевДмитрий Кудрявцев
263
263
add a comment |
add a comment |
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