Logical replication stuck and no data being copied - Mailing list pgsql-general
From | anonymous001 |
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Subject | Logical replication stuck and no data being copied |
Date | |
Msg-id | 1613570206123-0.post@n3.nabble.com Whole thread Raw |
Responses |
Re: Logical replication stuck and no data being copied
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List | pgsql-general |
I'm connecting from an aurora postgresql 12.4 instance to a postgresql 12.6 community edition. The postgresql 12.6 is the publisher and the aurora db is the subscriber. Most of the subscriptions and publishing worked. Except for one table, which I've created a separate publication for. One table is stuck and not copying data I checked with the following query. WITH active_pub_sub AS ( select relname from pg_stat_all_tables a join pg_subscription_rel sr on sr.srrelid = a.relid where srsubstate!='r' ) select relname as table_name, pg_size_pretty(pg_total_relation_size(relid)) as total_size, pg_size_pretty(pg_relation_size(relid)) as table_size, pg_size_pretty(pg_total_relation_size(relid) - pg_relation_size(relid)) as index_size from pg_catalog.pg_statio_user_tables where relname IN (SELECT * FROM active_pub_sub) order by pg_relation_size(relid) desc; table_name | total_size | table_size | index_size -----------------+------------+------------+------------ translationitem | 16 kB | 0 bytes | 16 kB This is what i see from the logs 2021-02-17 14:38:42 SAST [19462]: [3-1] user=replication,db=prodza,app=sub_prodza_translationitem,client=13.x.x.x LOG: starting logical decoding for slot "sub_prodza_translationitem" 2021-02-17 14:38:42 SAST [19462]: [4-1] user=replication,db=prodza,app=sub_prodza_translationitem,client=13.x.x.x DETAIL: Streaming transactions committing after 7AB/9CD78D60, reading WAL from 7AB/9CD78D28. 2021-02-17 14:38:42 SAST [19462]: [5-1] user=replication,db=prodza,app=sub_prodza_translationitem,client=13.x.x.x LOG: logical decoding found consistent point at 7AB/9CD78D28 2021-02-17 14:38:42 SAST [19462]: [6-1] user=replication,db=prodza,app=sub_prodza_translationitem,client=13.x.x.x DETAIL: There are no running transactions. from aurora prodza=> select * from pg_subscription_rel r join pg_stat_all_tables b on b.relid = r.srrelid and r.srsubstate='i';; -[ RECORD 1 ]-------+------------------------------ srsubid | 7768746 srrelid | 3553053 srsubstate | i srsublsn | relid | 3553053 schemaname | prodza relname | translationitem seq_scan | 6 seq_tup_read | 0 idx_scan | 0 idx_tup_fetch | 0 n_tup_ins | 15021981 n_tup_upd | 0 n_tup_del | 0 n_tup_hot_upd | 0 n_live_tup | 0 n_dead_tup | 0 n_mod_since_analyze | 0 last_vacuum | 2021-02-17 14:23:43.23275+02 last_autovacuum | 2021-02-17 14:09:05.482797+02 last_analyze | 2021-02-17 14:23:43.232893+02 last_autoanalyze | vacuum_count | 1 autovacuum_count | 42 analyze_count | 1 autoanalyze_count | 0 I have tried: ALTER SUBSCRIPTION sub_prodza_translationitem REFRESH PUBLICATION WITH (COPY_DATA); alter subscription sub_prodza_translationitem REFRESH PUBLICATION; On the publisher. # select * from pg_stat_activity where application_name ='sub_prodza_translationitem'; -[ RECORD 1 ]----+-------------------------------------------------------- datid | 221550750 datname | prodza pid | 19462 usesysid | 401960256 usename | replication application_name | sub_prodza_translationitem client_addr | 13.x.x.x.x client_hostname | client_port | 53162 backend_start | 2021-02-17 14:38:42.299105+02 xact_start | query_start | 2021-02-17 14:38:42.382807+02 state_change | 2021-02-17 14:38:42.43461+02 wait_event_type | Client wait_event | WalSenderWaitForWAL state | active backend_xid | backend_xmin | query | SELECT pg_catalog.set_config('search_path', '', false); backend_type | walsender I'm not certain why the snapshot and replication is not working. I'm guessing the the snapshot of the table completed but the wal process is stuck. -- Sent from: https://www.postgresql-archive.org/PostgreSQL-general-f1843780.html
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