Bug#49907: ALTER TABLE ... TRUNCATE PARTITION does not wait for

locks on the table

Fixing the partitioning specifics after TRUNCATE TABLE in
bug-42643 was fixed.

Reorganize of code to decrease the size of the giant switch
in mysql_execute_command, and to prepare for future parser
reengineering. Moved code into Sql_statement objects.

Updated patch according to davi's review comments.

mysql-test/r/not_partition.result

@@ -21,23 +21,17 @@ Table	Op	Msg_type	Msg_text
 test.t1	repair	Error	Unknown storage engine 'partition'
 test.t1	repair	error	Corrupt
 ALTER TABLE t1 REPAIR PARTITION ALL;
-Table	Op	Msg_type	Msg_text
-test.t1	repair	Error	Unknown storage engine 'partition'
-test.t1	repair	error	Corrupt
+ERROR HY000: The 'partitioning' feature is disabled; you need MySQL built with '--with-plugin-partition' to have it working
 ALTER TABLE t1 CHECK PARTITION ALL;
-Table	Op	Msg_type	Msg_text
-test.t1	check	Error	Unknown storage engine 'partition'
-test.t1	check	error	Corrupt
+ERROR HY000: The 'partitioning' feature is disabled; you need MySQL built with '--with-plugin-partition' to have it working
 ALTER TABLE t1 OPTIMIZE PARTITION ALL;
-Table	Op	Msg_type	Msg_text
-test.t1	optimize	Error	Unknown storage engine 'partition'
-test.t1	optimize	error	Corrupt
+ERROR HY000: The 'partitioning' feature is disabled; you need MySQL built with '--with-plugin-partition' to have it working
 ALTER TABLE t1 ANALYZE PARTITION ALL;
-Table	Op	Msg_type	Msg_text
-test.t1	analyze	Error	Unknown storage engine 'partition'
-test.t1	analyze	error	Corrupt
+ERROR HY000: The 'partitioning' feature is disabled; you need MySQL built with '--with-plugin-partition' to have it working
 ALTER TABLE t1 REBUILD PARTITION ALL;
 ERROR 42000: Unknown storage engine 'partition'
+ALTER TABLE t1 TRUNCATE PARTITION ALL;
+ERROR HY000: The 'partitioning' feature is disabled; you need MySQL built with '--with-plugin-partition' to have it working
 ALTER TABLE t1 ENGINE Memory;
 ERROR 42000: Unknown storage engine 'partition'
 ALTER TABLE t1 ADD (new INT);

mysql-test/r/partition_disabled.result

@@ -3,7 +3,7 @@ FLUSH TABLES;
 SELECT * FROM t1;
 ERROR HY000: The MySQL server is running with the --skip-partition option so it cannot execute this statement
 TRUNCATE TABLE t1;
-ERROR HY000: The MySQL server is running with the --skip-partition option so it cannot execute this statement
+ERROR 42S02: Table 'test.t1' doesn't exist
 ANALYZE TABLE t1;
 Table	Op	Msg_type	Msg_text
 test.t1	analyze	Error	The MySQL server is running with the --skip-partition option so it cannot execute this statement

mysql-test/r/partition_truncate.result

@@ -16,3 +16,11 @@ subpartitions 1
 alter table t1 truncate partition sp1;
 ERROR HY000: Incorrect partition name
 drop table t1;
+create table t1 (a int);
+insert into t1 values (1), (3), (8);
+alter table t1 truncate partition p0;
+ERROR HY000: Partition management on a not partitioned table is not possible
+select count(*) from t1;
+count(*)
+3
+drop table t1;

mysql-test/suite/parts/inc/partition_mgm.inc

@@ -533,6 +533,8 @@ PARTITION BY KEY (a)
 INSERT INTO t1 VALUES (NULL, "First"), (NULL, "Second"), (999, "Last in LT1000"), (NULL, "First in LT2000"), (NULL, "Second in LT2000"), (1999, "Last in LT2000"), (NULL, "First in MAX"), (NULL, "Second in MAX");
 --error ER_PARTITION_MGMT_ON_NONPARTITIONED, ER_ILLEGAL_HA
 ALTER TABLE t1 TRUNCATE PARTITION MAX;
+--sorted_result
+SELECT * FROM t1;
 }
 if (!$no_truncate)
 {

mysql-test/suite/parts/r/partition_debug_sync_innodb.result

@@ -1,4 +1,38 @@
 #
+# Bug#49907: ALTER TABLE ... TRUNCATE PARTITION
+#            does not wait for locks on the table
+#
+CREATE TABLE t1 (a INT)
+ENGINE = InnoDB
+PARTITION BY RANGE (a)
+(PARTITION p0 VALUES LESS THAN (15),
+PARTITION pMax VALUES LESS THAN MAXVALUE);
+INSERT INTO t1 VALUES (1), (11), (21), (33);
+BEGIN;
+DELETE FROM t1 WHERE a = 11;
+SELECT * FROM t1;
+a
+1
+21
+33
+# con1 (send)
+ALTER TABLE t1 TRUNCATE PARTITION pMax;
+# con default
+SELECT * FROM t1;
+a
+1
+21
+33
+# Commit will allow the TRUNCATE to finish
+COMMIT;
+# con1 (reap)
+# con1 (disconnect)
+# default connection
+SELECT * FROM t1;
+a
+1
+DROP TABLE t1;
+#
 # Bug#50561: ALTER PARTITIONS does not have adequate lock, breaks with
 #            concurrent I_S query
 create table t1 (a int)

mysql-test/suite/parts/r/partition_mgm_lc0_archive.result

@@ -927,6 +927,16 @@ PARTITION MAX);
 INSERT INTO t1 VALUES (NULL, "First"), (NULL, "Second"), (999, "Last in LT1000"), (NULL, "First in LT2000"), (NULL, "Second in LT2000"), (1999, "Last in LT2000"), (NULL, "First in MAX"), (NULL, "Second in MAX");
 ALTER TABLE t1 TRUNCATE PARTITION MAX;
 Got one of the listed errors
+SELECT * FROM t1;
+a	b
+1	First
+1000	First in LT2000
+1001	Second in LT2000
+1999	Last in LT2000
+2	Second
+2000	First in MAX
+2001	Second in MAX
+999	Last in LT1000
 # Cleaning up before exit
 USE test;
 DROP DATABASE MySQL_Test_DB;

mysql-test/suite/parts/r/partition_mgm_lc1_archive.result

@@ -894,6 +894,16 @@ PARTITION MAX);
 INSERT INTO t1 VALUES (NULL, "First"), (NULL, "Second"), (999, "Last in LT1000"), (NULL, "First in LT2000"), (NULL, "Second in LT2000"), (1999, "Last in LT2000"), (NULL, "First in MAX"), (NULL, "Second in MAX");
 ALTER TABLE t1 TRUNCATE PARTITION MAX;
 Got one of the listed errors
+SELECT * FROM t1;
+a	b
+1	First
+1000	First in LT2000
+1001	Second in LT2000
+1999	Last in LT2000
+2	Second
+2000	First in MAX
+2001	Second in MAX
+999	Last in LT1000
 # Cleaning up before exit
 USE test;
 DROP DATABASE MySQL_Test_DB;

mysql-test/suite/parts/r/partition_mgm_lc2_archive.result

@@ -894,6 +894,16 @@ PARTITION MAX);
 INSERT INTO t1 VALUES (NULL, "First"), (NULL, "Second"), (999, "Last in LT1000"), (NULL, "First in LT2000"), (NULL, "Second in LT2000"), (1999, "Last in LT2000"), (NULL, "First in MAX"), (NULL, "Second in MAX");
 ALTER TABLE t1 TRUNCATE PARTITION MAX;
 Got one of the listed errors
+SELECT * FROM t1;
+a	b
+1	First
+1000	First in LT2000
+1001	Second in LT2000
+1999	Last in LT2000
+2	Second
+2000	First in MAX
+2001	Second in MAX
+999	Last in LT1000
 # Cleaning up before exit
 USE test;
 DROP DATABASE MySQL_Test_DB;

mysql-test/suite/parts/t/partition_debug_sync_innodb.test

@@ -4,6 +4,47 @@
 
 let $MYSQLD_DATADIR=`SELECT @@datadir`;
 
+--echo #
+--echo # Bug#49907: ALTER TABLE ... TRUNCATE PARTITION
+--echo #            does not wait for locks on the table
+--echo #
+CREATE TABLE t1 (a INT)
+ENGINE = InnoDB
+PARTITION BY RANGE (a)
+(PARTITION p0 VALUES LESS THAN (15),
+ PARTITION pMax VALUES LESS THAN MAXVALUE);
+INSERT INTO t1 VALUES (1), (11), (21), (33);
+BEGIN;
+DELETE FROM t1 WHERE a = 11;
+--sorted_result
+SELECT * FROM t1;
+
+--connect (con1, localhost, root,,)
+--echo # con1 (send)
+--send
+ALTER TABLE t1 TRUNCATE PARTITION pMax;
+
+--connection default
+--echo # con default
+let $wait_condition=
+  SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST
+    WHERE STATE = "Waiting for table" AND INFO = "ALTER TABLE t1 TRUNCATE PARTITION pMax";
+--source include/wait_condition.inc
+--sorted_result
+SELECT * FROM t1;
+--echo # Commit will allow the TRUNCATE to finish
+COMMIT;
+
+--echo # con1 (reap)
+--connection con1
+--reap
+--echo # con1 (disconnect)
+--disconnect con1
+--connection default
+--echo # default connection
+SELECT * FROM t1;
+DROP TABLE t1;
+
 --echo #
 --echo # Bug#50561: ALTER PARTITIONS does not have adequate lock, breaks with
 --echo #            concurrent I_S query

mysql-test/t/not_partition.test

@@ -27,6 +27,7 @@ ALTER TABLE t1 CHECK PARTITION ALL;
 ALTER TABLE t1 OPTIMIZE PARTITION ALL;
 ALTER TABLE t1 ANALYZE PARTITION ALL;
 ALTER TABLE t1 REBUILD PARTITION ALL;
+ALTER TABLE t1 TRUNCATE PARTITION ALL;
 ALTER TABLE t1 ENGINE Memory;
 ALTER TABLE t1 ADD (new INT);
 DROP TABLE t1;

mysql-test/t/partition_truncate.test

@@ -24,3 +24,10 @@ subpartitions 1
 --error ER_WRONG_PARTITION_NAME
 alter table t1 truncate partition sp1;
 drop table t1;
+
+create table t1 (a int);
+insert into t1 values (1), (3), (8);
+--error ER_PARTITION_MGMT_ON_NONPARTITIONED
+alter table t1 truncate partition p0;
+select count(*) from t1;
+drop table t1;