Add TAP test for crash recovery Issue #84

Test crash recovery when prepared transactions are being created in
the background. Tests #84.

5 files changed, 298 insertions, 0 deletions

diff --git a/contrib/pgxc_ctl/t/020_prepared_txns.pl b/contrib/pgxc_ctl/t/020_prepared_txns.pl
new file mode 100755
index 0000000000..371cd9315e
--- /dev/null
+++ b/contrib/pgxc_ctl/t/020_prepared_txns.pl
@@ -0,0 +1,206 @@
+use strict;
+use warnings;
+use Cwd;
+use Config;
+use TestLib;
+use Test::More tests => 5;
+
+my $dataDirRoot="~/DATA/pgxl/nodes/";
+$ENV{'PGXC_CTL_HOME'} = '/tmp/pgxc_ctl';
+my $PGXC_CTL_HOME=$ENV{'PGXC_CTL_HOME'};
+
+#delete related dirs for cleanup
+system("echo '==========clear existing configuration==========='");
+system("rm -rf $dataDirRoot");
+system("rm -rf $PGXC_CTL_HOME");
+
+my $GTM_HOST="localhost";
+my $COORD1_HOST="localhost";
+my $COORD1_PORT=30001;
+my $COORD2_PORT=30002;
+my $COORD2_HOST="localhost";
+my $DN1_HOST="localhost";
+my $DN2_HOST="localhost";
+my $DEFAULT_DB="postgres";
+my $TEST_DB="testdb";
+
+system("echo '==========prepare configuration==========='");
+system_or_bail 'pgxc_ctl', 'prepare', 'config', 'empty' ;
+
+system_or_bail 'pgxc_ctl', 'add', 'gtm', 'master', 'gtm', "$GTM_HOST", '20001', "$dataDirRoot/gtm" ;
+
+system_or_bail 'pgxc_ctl', 'add', 'coordinator', 'master', 'coord1', "$COORD1_HOST", '30001', '30011', "$dataDirRoot/coord_master.1", 'none', 'none';
+
+system_or_bail 'pgxc_ctl', 'add', 'coordinator', 'master', 'coord2', "$COORD2_HOST", '30002', '30012', "$dataDirRoot/coord_master.2", 'none', 'none';
+
+system_or_bail 'pgxc_ctl', 'add', 'datanode', 'master', 'dn1', "$DN1_HOST", '40001', '40011', "$dataDirRoot/dn_master.1", 'none', 'none', 'none' ;
+
+system_or_bail 'pgxc_ctl', 'add', 'datanode', 'master', 'dn2', "$DN2_HOST", '40002', '40012', "$dataDirRoot/dn_master.2", 'none', 'none', 'none' ;
+
+system_or_bail 'pgxc_ctl', 'monitor', 'all' ;
+
+#add data
+
+system("echo '==========populate data==========='");
+
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$DEFAULT_DB",'-c', "CREATE DATABASE testdb;";
+
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT * FROM pgxc_node;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "CREATE TABLE disttab(col1 int, col2 int) DISTRIBUTE BY HASH(col1);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "CREATE TABLE repltab (col1 int, col2 int) DISTRIBUTE BY REPLICATION;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(1,1);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(2,2);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(3,3);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(4,4);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(5,5);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(6,6);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(7,7);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(8,8);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(9,9);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(10,10);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(11,11);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(12,12);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(13,13);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(14,14);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(15,15);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(16,16);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(17,17);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(18,18);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(19,19);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO disttab VALUES(20,20);";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "INSERT INTO repltab VALUES (generate_series(1,100), generate_series(101, 200));";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM disttab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM disttab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, * FROM disttab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM repltab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM repltab GROUP BY xc_node_id;";
+
+# test with killing nodes
+# do data sanity check
+
+system("psql -p 30001 testdb -f t/prep_tx1.sql --echo-all --set AUTOCOMMIT=off &");
+system("echo '==========kill dn1 -- with data==========='");
+system_or_bail 'pgxc_ctl', 'kill', 'datanode', 'master', 'dn1' ;
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "select pg_sleep(3);";
+system_or_bail 'pgxc_ctl', 'start', 'datanode', 'master', 'dn1' ;
+
+
+system("echo '==========data sanity check==========='");
+
+system_or_bail 'pgxc_ctl', 'monitor', 'all' ;
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM disttab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM disttab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM repltab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM repltab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT * from pg_prepared_xacts;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (dn1) 'SELECT * from pg_prepared_xacts;';";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (dn2) 'SELECT * from pg_prepared_xacts;';";
+system("echo '==========checking on coord1==========='");
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (coord1) 'SELECT * from pg_prepared_xacts;';";
+system("echo '==========checking on coord2==========='");
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (coord2) 'SELECT * from pg_prepared_xacts;';";
+
+
+system("psql -p 30001 testdb -f t/prep_tx2.sql --echo-all --set AUTOCOMMIT=off &");
+system("echo '==========kill coord1 -- with data==========='");
+system_or_bail 'pgxc_ctl', 'kill', 'coordinator', 'master', 'coord1' ;
+system_or_bail 'sleep', '3';
+system_or_bail 'pgxc_ctl', 'start', 'coordinator', 'master', 'coord1' ;
+
+
+system("echo '==========data sanity check==========='");
+
+system_or_bail 'pgxc_ctl', 'monitor', 'all' ;
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM disttab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM disttab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM repltab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM repltab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT * from pg_prepared_xacts;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (dn1) 'SELECT * from pg_prepared_xacts;';";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (dn2) 'SELECT * from pg_prepared_xacts;';";
+system("echo '==========checking on coord1==========='");
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (coord1) 'SELECT * from pg_prepared_xacts;';";
+system("echo '==========checking on coord2==========='");
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (coord2) 'SELECT * from pg_prepared_xacts;';";
+
+
+
+system("psql -p 30001 testdb -f t/prep_tx3.sql --echo-all --set AUTOCOMMIT=off &");
+system("echo '==========kill coord2 -- with data==========='");
+system_or_bail 'pgxc_ctl', 'kill', 'coordinator', 'master', 'coord2' ;
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "select pg_sleep(3);";
+system_or_bail 'pgxc_ctl', 'start', 'coordinator', 'master', 'coord2' ;
+
+
+system("echo '==========data sanity check==========='");
+
+system_or_bail 'pgxc_ctl', 'monitor', 'all' ;
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM disttab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM disttab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM repltab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM repltab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT * from pg_prepared_xacts;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (dn1) 'SELECT * from pg_prepared_xacts;';";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (dn2) 'SELECT * from pg_prepared_xacts;';";
+system("echo '==========checking on coord1==========='");
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (coord1) 'SELECT * from pg_prepared_xacts;';";
+system("echo '==========checking on coord2==========='");
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (coord2) 'SELECT * from pg_prepared_xacts;';";
+
+
+
+system("psql -p 30001 testdb -f t/prep_tx4.sql --echo-all --set AUTOCOMMIT=off &");
+system("echo '==========kill gtm master -- with data==========='");
+system_or_bail 'pgxc_ctl', 'kill', 'gtm', 'master', 'gtm' ;
+system_or_bail 'sleep', '3';
+system_or_bail 'pgxc_ctl', 'start', 'gtm', 'master', 'gtm' ;
+system_or_bail 'sleep', '10';
+
+system("echo '==========data sanity check==========='");
+
+system_or_bail 'pgxc_ctl', 'monitor', 'all' ;
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM disttab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM disttab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM repltab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM repltab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT * from pg_prepared_xacts;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (dn1) 'SELECT * from pg_prepared_xacts;';";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (dn2) 'SELECT * from pg_prepared_xacts;';";
+system("echo '==========checking on coord1==========='");
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (coord1) 'SELECT * from pg_prepared_xacts;';";
+system("echo '==========checking on coord2==========='");
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (coord2) 'SELECT * from pg_prepared_xacts;';";
+
+
+
+system("echo '==========commit prepared transactions==========='");
+
+command_ok([ 'psql', '-p', "$COORD1_PORT", "$TEST_DB", '-c', "COMMIT PREPARED 'foo1';" ], 'commit prepared transaction foo1 ');
+command_ok([ 'psql', '-p', "$COORD1_PORT", "$TEST_DB", '-c', "COMMIT PREPARED 'foo2';" ], 'commit prepared transaction foo2');
+command_ok([ 'psql', '-p', "$COORD1_PORT", "$TEST_DB", '-c', "EXECUTE DIRECT ON (coord2) 'COMMIT PREPARED ''foo3'';';" ], 'commit prepared transaction directly on coord2 ');
+command_ok([ 'psql', '-p', "$COORD2_PORT", "$TEST_DB", '-c', "COMMIT PREPARED 'foo3';" ], 'commit prepared transaction connecting to coord2 ');
+command_ok([ 'psql', '-p', "$COORD1_PORT", "$TEST_DB", '-c', "COMMIT PREPARED 'foo4';" ], 'commit prepared transaction connecting to coord2 ');
+
+system("echo '==========data sanity check==========='");
+
+system_or_bail 'pgxc_ctl', 'monitor', 'all' ;
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM disttab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM disttab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT count(*) FROM repltab;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT xc_node_id, count(*) FROM repltab GROUP BY xc_node_id;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "SELECT * from pg_prepared_xacts;";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (dn1) 'SELECT * from pg_prepared_xacts;';";
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (dn2) 'SELECT * from pg_prepared_xacts;';";
+system("echo '==========checking on coord1==========='");
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (coord1) 'SELECT * from pg_prepared_xacts;';";
+system("echo '==========checking on coord2==========='");
+system_or_bail 'psql', '-p', "$COORD1_PORT", "$TEST_DB",'-c', "EXECUTE DIRECT ON (coord2) 'SELECT * from pg_prepared_xacts;';";
+
+#add cleanup
+system_or_bail 'pgxc_ctl', 'clean', 'all' ;
+
+
+#delete related dirs for cleanup
+system("rm -rf $dataDirRoot");
+system("rm -rf $PGXC_CTL_HOME");
+
diff --git a/contrib/pgxc_ctl/t/prep_tx1.sql b/contrib/pgxc_ctl/t/prep_tx1.sql
new file mode 100755
index 0000000000..79c355a283
--- /dev/null
+++ b/contrib/pgxc_ctl/t/prep_tx1.sql
@@ -0,0 +1,23 @@
+BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE;
+SELECT pg_sleep(3);
+INSERT INTO disttab VALUES(21,21);
+INSERT INTO disttab VALUES(22,22);
+INSERT INTO disttab VALUES(23,23);
+INSERT INTO disttab VALUES(24,24);
+INSERT INTO disttab VALUES(25,25);
+INSERT INTO disttab VALUES(26,26);
+INSERT INTO disttab VALUES(27,27);
+INSERT INTO disttab VALUES(28,28);
+INSERT INTO disttab VALUES(29,29);
+INSERT INTO disttab VALUES(30,30);
+INSERT INTO disttab VALUES(31,31);
+INSERT INTO disttab VALUES(32,32);
+INSERT INTO disttab VALUES(33,33);
+INSERT INTO disttab VALUES(34,34);
+INSERT INTO disttab VALUES(35,35);
+INSERT INTO disttab VALUES(36,36);
+INSERT INTO disttab VALUES(37,37);
+INSERT INTO disttab VALUES(38,38);
+INSERT INTO disttab VALUES(39,39);
+INSERT INTO disttab VALUES(40,40);
+PREPARE TRANSACTION 'foo1';
diff --git a/contrib/pgxc_ctl/t/prep_tx2.sql b/contrib/pgxc_ctl/t/prep_tx2.sql
new file mode 100755
index 0000000000..4e4efb8161
--- /dev/null
+++ b/contrib/pgxc_ctl/t/prep_tx2.sql
@@ -0,0 +1,23 @@
+BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE;
+SELECT pg_sleep(3);
+INSERT INTO disttab VALUES(21,21);
+INSERT INTO disttab VALUES(22,22);
+INSERT INTO disttab VALUES(23,23);
+INSERT INTO disttab VALUES(24,24);
+INSERT INTO disttab VALUES(25,25);
+INSERT INTO disttab VALUES(26,26);
+INSERT INTO disttab VALUES(27,27);
+INSERT INTO disttab VALUES(28,28);
+INSERT INTO disttab VALUES(29,29);
+INSERT INTO disttab VALUES(30,30);
+INSERT INTO disttab VALUES(31,31);
+INSERT INTO disttab VALUES(32,32);
+INSERT INTO disttab VALUES(33,33);
+INSERT INTO disttab VALUES(34,34);
+INSERT INTO disttab VALUES(35,35);
+INSERT INTO disttab VALUES(36,36);
+INSERT INTO disttab VALUES(37,37);
+INSERT INTO disttab VALUES(38,38);
+INSERT INTO disttab VALUES(39,39);
+INSERT INTO disttab VALUES(40,40);
+PREPARE TRANSACTION 'foo2';
diff --git a/contrib/pgxc_ctl/t/prep_tx3.sql b/contrib/pgxc_ctl/t/prep_tx3.sql
new file mode 100755
index 0000000000..0278d39553
--- /dev/null
+++ b/contrib/pgxc_ctl/t/prep_tx3.sql
@@ -0,0 +1,23 @@
+BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE;
+SELECT pg_sleep(3);
+INSERT INTO disttab VALUES(21,21);
+INSERT INTO disttab VALUES(22,22);
+INSERT INTO disttab VALUES(23,23);
+INSERT INTO disttab VALUES(24,24);
+INSERT INTO disttab VALUES(25,25);
+INSERT INTO disttab VALUES(26,26);
+INSERT INTO disttab VALUES(27,27);
+INSERT INTO disttab VALUES(28,28);
+INSERT INTO disttab VALUES(29,29);
+INSERT INTO disttab VALUES(30,30);
+INSERT INTO disttab VALUES(31,31);
+INSERT INTO disttab VALUES(32,32);
+INSERT INTO disttab VALUES(33,33);
+INSERT INTO disttab VALUES(34,34);
+INSERT INTO disttab VALUES(35,35);
+INSERT INTO disttab VALUES(36,36);
+INSERT INTO disttab VALUES(37,37);
+INSERT INTO disttab VALUES(38,38);
+INSERT INTO disttab VALUES(39,39);
+INSERT INTO disttab VALUES(40,40);
+PREPARE TRANSACTION 'foo3';
diff --git a/contrib/pgxc_ctl/t/prep_tx4.sql b/contrib/pgxc_ctl/t/prep_tx4.sql
new file mode 100755
index 0000000000..1f328170eb
--- /dev/null
+++ b/contrib/pgxc_ctl/t/prep_tx4.sql
@@ -0,0 +1,23 @@
+BEGIN TRANSACTION ISOLATION LEVEL SERIALIZABLE;
+SELECT pg_sleep(3);
+INSERT INTO disttab VALUES(21,21);
+INSERT INTO disttab VALUES(22,22);
+INSERT INTO disttab VALUES(23,23);
+INSERT INTO disttab VALUES(24,24);
+INSERT INTO disttab VALUES(25,25);
+INSERT INTO disttab VALUES(26,26);
+INSERT INTO disttab VALUES(27,27);
+INSERT INTO disttab VALUES(28,28);
+INSERT INTO disttab VALUES(29,29);
+INSERT INTO disttab VALUES(30,30);
+INSERT INTO disttab VALUES(31,31);
+INSERT INTO disttab VALUES(32,32);
+INSERT INTO disttab VALUES(33,33);
+INSERT INTO disttab VALUES(34,34);
+INSERT INTO disttab VALUES(35,35);
+INSERT INTO disttab VALUES(36,36);
+INSERT INTO disttab VALUES(37,37);
+INSERT INTO disttab VALUES(38,38);
+INSERT INTO disttab VALUES(39,39);
+INSERT INTO disttab VALUES(40,40);
+PREPARE TRANSACTION 'foo4';