Hi,I am getting server closed the connection message in the log file of standby after 'logical replication synchronization worker finished processing' LOG message
2017-05-24 08:58:04.451 BST [28496] LOG: logical replication sync for subscription s_5434, table t1039 started 2017-05-24 08:58:05.447 BST [28388] LOG: starting logical replication worker for subscription "s_5434" 2017-05-24 08:58:05.453 BST [28498] LOG: logical replication sync for subscription s_5434, table t104 started 2017-05-24 08:58:06.449 BST [28388] LOG: starting logical replication worker for subscription "s_5434" 2017-05-24 08:58:06.455 BST [28500] LOG: logical replication sync for subscription s_5434, table t1040 started 2017-05-24 08:58:07.451 BST [28388] LOG: starting logical replication worker for subscription "s_5434" 2017-05-24 08:58:07.458 BST [28502] LOG: logical replication sync for subscription s_5434, table t1041 started 2017-05-24 08:58:08.453 BST [28388] LOG: starting logical replication worker for subscription "s_5434" 2017-05-24 08:58:08.461 BST [28504] LOG: logical replication sync for subscription s_5434, table t1042 started 2017-05-24 08:58:23.540 BST [28463] LOG: logical replication synchronization worker finished processing 2017-05-24 08:58:23.550 BST [28461] LOG: logical replication synchronization worker finished processing 2017-05-24 08:58:08.453 BST [28388] LOG: starting logical replication worker for subscription "s_5434" 2017-05-24 08:58:08.461 BST [28504] LOG: logical replication sync for subscription s_5434, table t1042 started 2017-05-24 08:58:23.540 BST [28463] LOG: logical replication synchronization worker finished processing 2017-05-24 08:58:23.550 BST [28461] LOG: logical replication synchronization worker finished processing
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
2017-05-24 08:59:23.622 BST [28465] ERROR: error reading result of
streaming command: server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
2017-05-24 08:59:23.627 BST [28340] LOG: worker process: logical
replication worker for subscription 31385 sync 19463 (PID 28465) exited
with exit code 1
server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
2017-05-24 08:59:33.624 BST [28467] ERROR: error reading result of
streaming command: server closed the connection unexpectedly
This probably means the server terminated abnormally
before or while processing the request.
Steps to reproduce -
X Cluster -
Modify/add this below parameters in postgresql.conf file
wal_level=logical
logging_collector=on
max_replication_slots = 100
max_worker_processes = 50
max_logical_replication_workers = 35
max_sync_workers_per_subscription = 25
max_wal_senders=50
log_min_duration_statement = 0
port=5432
Start the server
connect to psql
create 5000 tables
create publication -> create publication pub for all tables;
Y Cluster-
Modify/add this below parameters in postgresql.conf file
wal_level=logical
logging_collector=on
max_replication_slots = 100
max_worker_processes = 50
max_logical_replication_workers = 35
max_sync_workers_per_subscription = 25
max_wal_senders=50
log_min_duration_statement = 0
port=5433
Start the server
connect to psql
create 5000 tables
create subscription ->create subscription suv connection
'dbname=postgres port=5432 user=centos host=localhost' publication pub;
check the log file on standby ( in 5-10 minutes , server closed ... message should come)
attaching both log files ( master and standby).reproducing this issue is not consistent. Out of 5 times, i am able to reproduce it 2 times only.
-- regards,tushar EnterpriseDB https://www.enterprisedb.com/ The Enterprise PostgreSQL Company
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