Bug#12400341 INNODB CAN LEAVE ORPHAN IBD FILES AROUND

If we meet DB_TOO_MANY_CONCURRENT_TRXS during the execution tab_create_graph from row_create_table_for_mysql(), .ibd file for the table should be created already but was not deleted for the error handling.

rb:875 approved by Jimmy Yang

mysql-test/suite/innodb/r/innodb_bug12400341.result

+call mtr.add_suppression("InnoDB: Warning: cannot find a free slot for an undo log. Do you have too");
+show variables like "max_connections";
+Variable_name	Value
+max_connections	64
+show variables like "innodb_thread_concurrency";
+Variable_name	Value
+innodb_thread_concurrency	0
+show variables like "innodb_file_per_table";
+Variable_name	Value
+innodb_file_per_table	ON
+drop database if exists mysqltest;
+create database mysqltest;
+CREATE TABLE mysqltest.transtable (id int unsigned NOT NULL PRIMARY KEY, val int DEFAULT 0) ENGINE=InnoDB;
+select count(*) from information_schema.processlist;
+count(*)
+33
+CREATE TABLE mysqltest.testtable (id int unsigned not null primary key) ENGINE=InnoDB;
+ERROR HY000: Can't create table 'mysqltest.testtable' (errno: 177)
+select count(*) from information_schema.processlist;
+count(*)
+33
+select count(*) from information_schema.processlist;
+count(*)
+33
+drop database mysqltest;

mysql-test/suite/innodb/t/innodb_bug12400341-master.opt

+--max_connections=64 --innodb_thread_concurrency=0 --innodb_file_per_table

mysql-test/suite/innodb/t/innodb_bug12400341.test

+# Test for bug #12400341: INNODB CAN LEAVE ORPHAN IBD FILES AROUND
+
+-- source include/have_innodb.inc
+
+if (`select count(*)=0 from information_schema.global_variables where variable_name = 'INNODB_TRX_RSEG_N_SLOTS_DEBUG'`)
+{
+  --skip Test requires InnoDB built with UNIV_DEBUG definition.
+}
+
+call mtr.add_suppression("InnoDB: Warning: cannot find a free slot for an undo log. Do you have too");
+
+--disable_query_log
+set @old_innodb_trx_rseg_n_slots_debug = @@innodb_trx_rseg_n_slots_debug;
+set global innodb_trx_rseg_n_slots_debug = 32;
+--enable_query_log
+
+show variables like "max_connections";
+show variables like "innodb_thread_concurrency";
+show variables like "innodb_file_per_table";
+
+--disable_warnings
+drop database if exists mysqltest;
+--enable_warnings
+
+create database mysqltest;
+CREATE TABLE mysqltest.transtable (id int unsigned NOT NULL PRIMARY KEY, val int DEFAULT 0) ENGINE=InnoDB;
+
+--disable_query_log
+#
+# Insert in 1 transaction which needs over 1 page undo record to avoid the insert_undo cached,
+# because the cached insert_undo can be reused at "CREATE TABLE" statement later.
+#
+START TRANSACTION;
+let $c = 1024;
+while ($c)
+{
+  eval INSERT INTO mysqltest.transtable (id) VALUES ($c);
+  dec $c;
+}
+COMMIT;
+
+let $c = 32;
+while ($c)
+{
+  # if failed at here, it might be shortage of file descriptors limit.
+  connect (con$c,localhost,root,,);
+  dec $c;
+}
+--enable_query_log
+
+select count(*) from information_schema.processlist;
+
+#
+# fill the all undo slots
+#
+--disable_query_log
+let $c = 32;
+while ($c)
+{
+  connection con$c;
+  START TRANSACTION;
+  eval UPDATE mysqltest.transtable SET val = 1 WHERE id = 33 - $c;
+  dec $c;
+}
+--enable_query_log
+
+connection default;
+
+--error ER_CANT_CREATE_TABLE
+CREATE TABLE mysqltest.testtable (id int unsigned not null primary key) ENGINE=InnoDB;
+
+select count(*) from information_schema.processlist;
+
+--disable_query_log
+let $c = 32;
+while ($c)
+{
+  connection con$c;
+  ROLLBACK;
+  dec $c;
+}
+--enable_query_log
+
+connection default;
+select count(*) from information_schema.processlist;
+
+--disable_query_log
+let $c = 32;
+while ($c)
+{
+  disconnect con$c;
+  dec $c;
+}
+--enable_query_log
+
+#
+# If the isolated .ibd file remained, the drop database should fail.
+#
+drop database mysqltest;
+
+--disable_query_log
+set global innodb_trx_rseg_n_slots_debug = @old_innodb_trx_rseg_n_slots_debug;
+--enable_query_log

mysql-test/suite/innodb_plugin/r/innodb_bug12400341.result

+call mtr.add_suppression("InnoDB: Warning: cannot find a free slot for an undo log. Do you have too");
+show variables like "max_connections";
+Variable_name	Value
+max_connections	64
+show variables like "innodb_thread_concurrency";
+Variable_name	Value
+innodb_thread_concurrency	0
+show variables like "innodb_file_per_table";
+Variable_name	Value
+innodb_file_per_table	ON
+drop database if exists mysqltest;
+create database mysqltest;
+CREATE TABLE mysqltest.transtable (id int unsigned NOT NULL PRIMARY KEY, val int DEFAULT 0) ENGINE=InnoDB;
+select count(*) from information_schema.processlist;
+count(*)
+33
+CREATE TABLE mysqltest.testtable (id int unsigned not null primary key) ENGINE=InnoDB;
+ERROR HY000: Can't create table 'mysqltest.testtable' (errno: 177)
+select count(*) from information_schema.processlist;
+count(*)
+33
+select count(*) from information_schema.processlist;
+count(*)
+33
+drop database mysqltest;

mysql-test/suite/innodb_plugin/t/innodb_bug12400341-master.opt

+--max_connections=64 --innodb_thread_concurrency=0 --innodb_file_per_table

mysql-test/suite/innodb_plugin/t/innodb_bug12400341.test

+# Test for bug #12400341: INNODB CAN LEAVE ORPHAN IBD FILES AROUND
+
+-- source include/have_innodb_plugin.inc
+
+if (`select count(*)=0 from information_schema.global_variables where variable_name = 'INNODB_TRX_RSEG_N_SLOTS_DEBUG'`)
+{
+  --skip Test requires InnoDB built with UNIV_DEBUG definition.
+}
+
+call mtr.add_suppression("InnoDB: Warning: cannot find a free slot for an undo log. Do you have too");
+
+--disable_query_log
+set @old_innodb_trx_rseg_n_slots_debug = @@innodb_trx_rseg_n_slots_debug;
+set global innodb_trx_rseg_n_slots_debug = 32;
+--enable_query_log
+
+show variables like "max_connections";
+show variables like "innodb_thread_concurrency";
+show variables like "innodb_file_per_table";
+
+--disable_warnings
+drop database if exists mysqltest;
+--enable_warnings
+
+create database mysqltest;
+CREATE TABLE mysqltest.transtable (id int unsigned NOT NULL PRIMARY KEY, val int DEFAULT 0) ENGINE=InnoDB;
+
+--disable_query_log
+#
+# Insert in 1 transaction which needs over 1 page undo record to avoid the insert_undo cached,
+# because the cached insert_undo can be reused at "CREATE TABLE" statement later.
+#
+START TRANSACTION;
+let $c = 1024;
+while ($c)
+{
+  eval INSERT INTO mysqltest.transtable (id) VALUES ($c);
+  dec $c;
+}
+COMMIT;
+
+let $c = 32;
+while ($c)
+{
+  # if failed at here, it might be shortage of file descriptors limit.
+  connect (con$c,localhost,root,,);
+  dec $c;
+}
+--enable_query_log
+
+select count(*) from information_schema.processlist;
+
+#
+# fill the all undo slots
+#
+--disable_query_log
+let $c = 32;
+while ($c)
+{
+  connection con$c;
+  START TRANSACTION;
+  eval UPDATE mysqltest.transtable SET val = 1 WHERE id = 33 - $c;
+  dec $c;
+}
+--enable_query_log
+
+connection default;
+
+--error ER_CANT_CREATE_TABLE
+CREATE TABLE mysqltest.testtable (id int unsigned not null primary key) ENGINE=InnoDB;
+
+select count(*) from information_schema.processlist;
+
+--disable_query_log
+let $c = 32;
+while ($c)
+{
+  connection con$c;
+  ROLLBACK;
+  dec $c;
+}
+--enable_query_log
+
+connection default;
+select count(*) from information_schema.processlist;
+
+--disable_query_log
+let $c = 32;
+while ($c)
+{
+  disconnect con$c;
+  dec $c;
+}
+--enable_query_log
+
+#
+# If the isolated .ibd file remained, the drop database should fail.
+#
+drop database mysqltest;
+
+--disable_query_log
+set global innodb_trx_rseg_n_slots_debug = @old_innodb_trx_rseg_n_slots_debug;
+--enable_query_log

storage/innobase/handler/ha_innodb.cc

@@ -9060,6 +9060,13 @@ static MYSQL_SYSVAR_UINT(change_buffering_debug, ibuf_debug,
   NULL, NULL, 0, 0, 1, 0);
 #endif /* UNIV_DEBUG || UNIV_IBUF_DEBUG */
 
+#ifdef UNIV_DEBUG
+static MYSQL_SYSVAR_UINT(trx_rseg_n_slots_debug, trx_rseg_n_slots_debug,
+  PLUGIN_VAR_RQCMDARG,
+  "Debug flags for InnoDB to limit TRX_RSEG_N_SLOTS for trx_rsegf_undo_find_free()",
+  NULL, NULL, 0, 0, 1024, 0);
+#endif /* UNIV_DEBUG */
+
 static struct st_mysql_sys_var* innobase_system_variables[]= {
   MYSQL_SYSVAR(additional_mem_pool_size),
   MYSQL_SYSVAR(autoextend_increment),
@@ -9105,6 +9112,9 @@ static struct st_mysql_sys_var* innobase_system_variables[]= {
 #if defined UNIV_DEBUG || defined UNIV_IBUF_DEBUG
   MYSQL_SYSVAR(change_buffering_debug),
 #endif /* UNIV_DEBUG || UNIV_IBUF_DEBUG */
+#ifdef UNIV_DEBUG
+  MYSQL_SYSVAR(trx_rseg_n_slots_debug),
+#endif /* UNIV_DEBUG */
   NULL
 };
 

storage/innobase/include/trx0rseg.ic

@@ -8,6 +8,7 @@ Created 3/26/1996 Heikki Tuuri
 
 #include "srv0srv.h"
 #include "mtr0log.h"
+#include "trx0sys.h"
 
 /**********************************************************************
 Gets a rollback segment header. */
@@ -113,7 +114,13 @@ trx_rsegf_undo_find_free(
 	ulint		i;
 	ulint		page_no;
 
-	for (i = 0; i < TRX_RSEG_N_SLOTS; i++) {
+	for (i = 0;
+#ifndef UNIV_DEBUG
+	     i < TRX_RSEG_N_SLOTS;
+#else
+	     i < (trx_rseg_n_slots_debug ? trx_rseg_n_slots_debug : TRX_RSEG_N_SLOTS);
+#endif
+	     i++) {
 
 		page_no = trx_rsegf_get_nth_undo(rsegf, i, mtr);
 

storage/innobase/include/trx0sys.h

@@ -47,6 +47,11 @@ extern ibool			trx_doublewrite_buf_is_being_created;
 extern ibool			trx_doublewrite_must_reset_space_ids;
 extern ibool			trx_sys_multiple_tablespace_format;
 
+#ifdef UNIV_DEBUG
+/* Flag to control TRX_RSEG_N_SLOTS behavior debugging. */
+extern uint			trx_rseg_n_slots_debug;
+#endif
+
 /********************************************************************
 Creates the doublewrite buffer to a new InnoDB installation. The header of the
 doublewrite buffer is placed on the trx system header page. */

storage/innobase/row/row0mysql.c

@@ -1948,6 +1948,18 @@ row_create_table_for_mysql(
 							 FALSE);
 			}
 
+		} else if (err == DB_TOO_MANY_CONCURRENT_TRXS) {
+			/* We already have .ibd file here. it should be deleted. */
+			if (table->space
+			    && !fil_delete_tablespace(table->space)) {
+				ut_print_timestamp(stderr);
+				fprintf(stderr,
+					"  InnoDB: Error: not able to"
+					" delete tablespace %lu of table ",
+					(ulong) table->space);
+				ut_print_name(stderr, trx, TRUE, table->name);
+				fputs("!\n", stderr);
+			}
 		} else if (err == DB_DUPLICATE_KEY) {
 			ut_print_timestamp(stderr);
 

storage/innobase/trx/trx0sys.c

@@ -54,6 +54,10 @@ InnoDB. */
 char		trx_sys_mysql_bin_log_name[TRX_SYS_MYSQL_LOG_NAME_LEN];
 ib_longlong	trx_sys_mysql_bin_log_pos	= -1;
 
+#ifdef UNIV_DEBUG
+/* Flag to control TRX_RSEG_N_SLOTS behavior debugging. */
+uint		trx_rseg_n_slots_debug = 0;
+#endif
 
 /********************************************************************
 Determines if a page number is located inside the doublewrite buffer. */

storage/innodb_plugin/ChangeLog

+2012-01-04	The InnoDB Team
+
+	* row/row0mysql.c:
+	Fix Bug#12400341: INNODB CAN LEAVE ORPHAN IBD FILES AROUND
+
 2011-12-21	The InnoDB Team
 
 	* include/ut0rnd.ic:

storage/innodb_plugin/handler/ha_innodb.cc

@@ -11033,6 +11033,13 @@ static MYSQL_SYSVAR_ULONG(read_ahead_threshold, srv_read_ahead_threshold,
   "trigger a readahead.",
   NULL, NULL, 56, 0, 64, 0);
 
+#ifdef UNIV_DEBUG
+static MYSQL_SYSVAR_UINT(trx_rseg_n_slots_debug, trx_rseg_n_slots_debug,
+  PLUGIN_VAR_RQCMDARG,
+  "Debug flags for InnoDB to limit TRX_RSEG_N_SLOTS for trx_rsegf_undo_find_free()",
+  NULL, NULL, 0, 0, 1024, 0);
+#endif /* UNIV_DEBUG */
+
 static struct st_mysql_sys_var* innobase_system_variables[]= {
   MYSQL_SYSVAR(additional_mem_pool_size),
   MYSQL_SYSVAR(autoextend_increment),
@@ -11094,6 +11101,9 @@ static struct st_mysql_sys_var* innobase_system_variables[]= {
   MYSQL_SYSVAR(random_read_ahead),
   MYSQL_SYSVAR(read_ahead_threshold),
   MYSQL_SYSVAR(io_capacity),
+#ifdef UNIV_DEBUG
+  MYSQL_SYSVAR(trx_rseg_n_slots_debug),
+#endif /* UNIV_DEBUG */
   NULL
 };
 

storage/innodb_plugin/include/trx0rseg.ic

@@ -25,6 +25,7 @@ Created 3/26/1996 Heikki Tuuri
 
 #include "srv0srv.h"
 #include "mtr0log.h"
+#include "trx0sys.h"
 
 /******************************************************************//**
 Gets a rollback segment header.
@@ -131,7 +132,13 @@ trx_rsegf_undo_find_free(
 	ulint		i;
 	ulint		page_no;
 
-	for (i = 0; i < TRX_RSEG_N_SLOTS; i++) {
+	for (i = 0;
+#ifndef UNIV_DEBUG
+	     i < TRX_RSEG_N_SLOTS;
+#else
+	     i < (trx_rseg_n_slots_debug ? trx_rseg_n_slots_debug : TRX_RSEG_N_SLOTS);
+#endif
+	     i++) {
 
 		page_no = trx_rsegf_get_nth_undo(rsegf, i, mtr);
 

storage/innodb_plugin/include/trx0sys.h

@@ -229,6 +229,12 @@ trx_id_t
 trx_sys_get_new_trx_no(void);
 /*========================*/
 #endif /* !UNIV_HOTBACKUP */
+
+#ifdef UNIV_DEBUG
+/* Flag to control TRX_RSEG_N_SLOTS behavior debugging. */
+extern uint			trx_rseg_n_slots_debug;
+#endif
+
 /*****************************************************************//**
 Writes a trx id to an index page. In case that the id size changes in
 some future version, this function should be used instead of

storage/innodb_plugin/row/row0mysql.c

@@ -1900,6 +1900,20 @@ err_exit:
 		}
 		break;
 
+	case DB_TOO_MANY_CONCURRENT_TRXS:
+		/* We already have .ibd file here. it should be deleted. */
+
+		if (table->space && !fil_delete_tablespace(table->space)) {
+			ut_print_timestamp(stderr);
+			fprintf(stderr,
+				"  InnoDB: Error: not able to"
+				" delete tablespace %lu of table ",
+				(ulong) table->space);
+			ut_print_name(stderr, trx, TRUE, table->name);
+			fputs("!\n", stderr);
+		}
+		/* fall through */
+
 	case DB_DUPLICATE_KEY:
 	default:
 		/* We may also get err == DB_ERROR if the .ibd file for the

storage/innodb_plugin/trx/trx0sys.c

@@ -127,6 +127,11 @@ static const char*	file_format_name_map[] = {
 static const ulint	FILE_FORMAT_NAME_N
 	= sizeof(file_format_name_map) / sizeof(file_format_name_map[0]);
 
+#ifdef UNIV_DEBUG
+/* Flag to control TRX_RSEG_N_SLOTS behavior debugging. */
+uint		trx_rseg_n_slots_debug = 0;
+#endif
+
 #ifndef UNIV_HOTBACKUP
 /** This is used to track the maximum file format id known to InnoDB. It's
 updated via SET GLOBAL innodb_file_format_check = 'x' or when we open