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fix: fix timeout issue for long-running queries by ssalmani-ledger · Pull Request #15 · dacker-team/pyred · GitHub
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fix: fix timeout issue for long-running queries #15

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pflucet merged 1 commit into from
Apr 20, 2022
Merged

fix: fix timeout issue for long-running queries #15

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14 changes: 10 additions & 4 deletions pyred/RedDBStream.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,14 +23,20 @@ def __init__(self, instance_name, client_id):

def connection(self):
connection_kwargs = self.credentials()
keepalive_kwargs = {
"keepalives": 1,
"keepalives_idle": 30,
"keepalives_interval": 5,
"keepalives_count": 5,
}
try:
con = psycopg2.connect(**connection_kwargs, cursor_factory=RealDictCursor)
con = psycopg2.connect(**connection_kwargs, **keepalive_kwargs, cursor_factory=RealDictCursor)
except psycopg2.OperationalError:
time.sleep(2)
if self.ssh_tunnel:
self.ssh_tunnel.close()
self.create_tunnel()
con = psycopg2.connect(**connection_kwargs, cursor_factory=RealDictCursor)
con = psycopg2.connect(**connection_kwargs, **keepalive_kwargs, cursor_factory=RealDictCursor)
return con

def _execute_query_custom(self, query):
Expand Down Expand Up @@ -201,7 +207,7 @@ def clean(self, selecting_id, schema_prefix, table):
print('trying to clean table %s.%s using %s' % (schema_prefix, table, selecting_id))
cleaning_query = """
DELETE FROM %(schema_name)s.%(table_name)s WHERE %(id)s IN (SELECT distinct %(id)s FROM %(schema_name)s.%(table_name)s_temp);
INSERT INTO %(schema_name)s.%(table_name)s
INSERT INTO %(schema_name)s.%(table_name)s
SELECT * FROM %(schema_name)s.%(table_name)s_temp;
DELETE FROM %(schema_name)s.%(table_name)s_temp;
""" % {"table_name": table,
Expand All @@ -228,7 +234,7 @@ def get_data_type(self, table_name, schema_name):
information_schema.columns
WHERE
table_name = '%s' and table_schema = '%s'
union
union
select col_name as column_name , col_type as data_type
from pg_get_late_binding_view_cols() cols(view_schema name, view_name name, col_name name, col_type varchar, col_num int)
WHERE
Expand Down