Add failure test for insert/select pushdown

src/test/regress/expected/failure_insert_select_pushdown.out

@@ -0,0 +1,150 @@
+--
+-- failure_insert_select_pushdown
+--
+-- performs failure/cancellation test for insert/select pushed down to shards.
+--
+SELECT citus.mitmproxy('conn.allow()');
+ mitmproxy 
+-----------
+ 
+(1 row)
+
+CREATE SCHEMA insert_select_pushdown;
+SET SEARCH_PATH=insert_select_pushdown;
+SET citus.shard_count to 2;
+SET citus.shard_replication_factor to 1;
+SELECT pg_backend_pid() as pid \gset
+CREATE TABLE events_table(user_id int, event_id int, event_type int);
+CREATE TABLE events_summary(user_id int, event_id int, event_count int);
+SELECT create_distributed_table('events_table', 'user_id');
+ create_distributed_table 
+--------------------------
+ 
+(1 row)
+
+SELECT create_distributed_table('events_summary', 'user_id');
+ create_distributed_table 
+--------------------------
+ 
+(1 row)
+
+INSERT INTO events_table VALUES (1, 1, 3 ), (1, 2, 1), (1, 3, 2), (2, 4, 3), (3, 5, 1), (4, 7, 1), (4, 1, 9), (4, 3, 2);
+SELECT count(*) FROM events_summary; 
+ count 
+-------
+     0
+(1 row)
+
+-- insert/select from one distributed table to another
+-- kill worker query
+SELECT citus.mitmproxy('conn.onQuery(query="^INSERT INTO insert_select_pushdown").kill()');
+ mitmproxy 
+-----------
+ 
+(1 row)
+
+INSERT INTO events_summary SELECT user_id, event_id, count(*) FROM events_table GROUP BY 1,2;
+ERROR:  server closed the connection unexpectedly
+	This probably means the server terminated abnormally
+	before or while processing the request.
+CONTEXT:  while executing command on localhost:9060
+--verify nothing is modified
+SELECT citus.mitmproxy('conn.allow()');
+ mitmproxy 
+-----------
+ 
+(1 row)
+
+SELECT count(*) FROM events_summary;
+ count 
+-------
+     0
+(1 row)
+
+-- cancel worker query
+SELECT citus.mitmproxy('conn.onQuery(query="^INSERT INTO insert_select_pushdown").cancel(' || :pid || ')');
+ mitmproxy 
+-----------
+ 
+(1 row)
+
+INSERT INTO events_summary SELECT user_id, event_id, count(*) FROM events_table GROUP BY 1,2;
+ERROR:  canceling statement due to user request
+--verify nothing is modified
+SELECT citus.mitmproxy('conn.allow()');
+ mitmproxy 
+-----------
+ 
+(1 row)
+
+SELECT count(*) FROM events_summary;
+ count 
+-------
+     0
+(1 row)
+
+-- test self insert/select
+SELECT count(*) FROM events_table;
+ count 
+-------
+     8
+(1 row)
+
+-- kill worker query
+SELECT citus.mitmproxy('conn.onQuery(query="^INSERT INTO insert_select_pushdown").kill()');
+ mitmproxy 
+-----------
+ 
+(1 row)
+
+INSERT INTO events_table SELECT * FROM events_table;
+ERROR:  server closed the connection unexpectedly
+	This probably means the server terminated abnormally
+	before or while processing the request.
+CONTEXT:  while executing command on localhost:9060
+--verify nothing is modified
+SELECT citus.mitmproxy('conn.allow()');
+ mitmproxy 
+-----------
+ 
+(1 row)
+
+SELECT count(*) FROM events_table;
+ count 
+-------
+     8
+(1 row)
+
+-- cancel worker query
+SELECT citus.mitmproxy('conn.onQuery(query="^INSERT INTO insert_select_pushdown").cancel(' || :pid || ')');
+ mitmproxy 
+-----------
+ 
+(1 row)
+
+INSERT INTO events_table SELECT * FROM events_table;
+ERROR:  canceling statement due to user request
+--verify nothing is modified
+SELECT citus.mitmproxy('conn.allow()');
+ mitmproxy 
+-----------
+ 
+(1 row)
+
+SELECT count(*) FROM events_table;
+ count 
+-------
+     8
+(1 row)
+
+RESET SEARCH_PATH;
+SELECT citus.mitmproxy('conn.allow()');
+ mitmproxy 
+-----------
+ 
+(1 row)
+
+DROP SCHEMA insert_select_pushdown CASCADE;
+NOTICE:  drop cascades to 2 other objects
+DETAIL:  drop cascades to table insert_select_pushdown.events_table
+drop cascades to table insert_select_pushdown.events_summary

src/test/regress/failure_schedule

@@ -25,3 +25,4 @@ test: failure_vacuum
 test: failure_single_select
 test: failure_ref_tables
 test: failure_real_time_select
+test: failure_insert_select_pushdown

src/test/regress/sql/failure_insert_select_pushdown.sql

@@ -0,0 +1,64 @@
+--
+-- failure_insert_select_pushdown
+--
+-- performs failure/cancellation test for insert/select pushed down to shards.
+--
+SELECT citus.mitmproxy('conn.allow()');
+
+CREATE SCHEMA insert_select_pushdown;
+SET SEARCH_PATH=insert_select_pushdown;
+SET citus.shard_count to 2;
+SET citus.shard_replication_factor to 1;
+SELECT pg_backend_pid() as pid \gset
+
+CREATE TABLE events_table(user_id int, event_id int, event_type int);
+CREATE TABLE events_summary(user_id int, event_id int, event_count int);
+SELECT create_distributed_table('events_table', 'user_id');
+SELECT create_distributed_table('events_summary', 'user_id');
+
+INSERT INTO events_table VALUES (1, 1, 3 ), (1, 2, 1), (1, 3, 2), (2, 4, 3), (3, 5, 1), (4, 7, 1), (4, 1, 9), (4, 3, 2);
+
+
+SELECT count(*) FROM events_summary; 
+
+-- insert/select from one distributed table to another
+
+-- kill worker query
+SELECT citus.mitmproxy('conn.onQuery(query="^INSERT INTO insert_select_pushdown").kill()');
+INSERT INTO events_summary SELECT user_id, event_id, count(*) FROM events_table GROUP BY 1,2;
+
+--verify nothing is modified
+SELECT citus.mitmproxy('conn.allow()');
+SELECT count(*) FROM events_summary;
+
+-- cancel worker query
+SELECT citus.mitmproxy('conn.onQuery(query="^INSERT INTO insert_select_pushdown").cancel(' || :pid || ')');
+INSERT INTO events_summary SELECT user_id, event_id, count(*) FROM events_table GROUP BY 1,2;
+
+--verify nothing is modified
+SELECT citus.mitmproxy('conn.allow()');
+SELECT count(*) FROM events_summary;
+
+-- test self insert/select
+SELECT count(*) FROM events_table;
+
+-- kill worker query
+SELECT citus.mitmproxy('conn.onQuery(query="^INSERT INTO insert_select_pushdown").kill()');
+INSERT INTO events_table SELECT * FROM events_table;
+
+--verify nothing is modified
+SELECT citus.mitmproxy('conn.allow()');
+SELECT count(*) FROM events_table;
+
+-- cancel worker query
+SELECT citus.mitmproxy('conn.onQuery(query="^INSERT INTO insert_select_pushdown").cancel(' || :pid || ')');
+INSERT INTO events_table SELECT * FROM events_table;
+
+--verify nothing is modified
+SELECT citus.mitmproxy('conn.allow()');
+SELECT count(*) FROM events_table;
+
+
+RESET SEARCH_PATH;
+SELECT citus.mitmproxy('conn.allow()');
+DROP SCHEMA insert_select_pushdown CASCADE;