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unknown f5dd3491f2 Bug#21587 FLUSH TABLES causes server crash when used with HANDLER statements 
This bug is a symptom of the way handler's tables are managed. The
most different aspect, compared to the conventional behavior, is that
the handler's tables are long lived, meaning that their lifetimes are
not bounded by the duration of the command that opened them. For this
effect the handler code uses its own list (handler_tables instead of
open_tables) to hold open handler tables so that the tables won't be
closed at the end of the command/statement. Besides the handler_tables
list, there is a hash (handler_tables_hash) which is used to associate
handler aliases to tables and to refresh the tables upon demand (flush
tables).

The current implementation doesn't work properly with refreshed tables
-- more precisely when flush commands are issued by other initiators.
This happens because when a handler open or read statement is being
processed, the associated table has to be opened or locked and, for this
matter, the open_tables and handler_tables lists are swapped so that the
new table being opened is inserted into the handler_tables list. But when
opening or locking the table, if the refresh version is different from the
thread refresh version then all used tables in the open_tables list (now
handler_tables) are refreshed. In the "refreshing" process the handler
tables are flushed (closed) without being properly unlinked from the
handler hash.

The current implementation also fails to properly discard handlers of
dropped tables, but this and other problems are going to be addressed
in the fixes for bugs 31397 and 31409.

The chosen approach tries to properly save and restore the table state
so that no table is flushed during the table open and lock operations.
The logic is almost the same as before with the list swapping, but with
a working glue code.

The test case for this bug is going to be committed into 5.1 because it
requires a test feature only avaiable in 5.1 (wait_condition).


sql/sql_handler.cc:
  Backup and reset the open_tables and handler_table lists when opening
  a new handler table and merge the opened table into the handler_tables
  list afterwards. When locking, do the same but possibly close the table
  if a refresh is pending.
2007-10-04 17:34:41 -03:00
..
examples Bug#28862 Extended Latin1 characters get lost in CVS engine 2007-06-15 11:19:35 +05:00
share Merge ramayana.hindu.god:/home/tsmith/m/bk/50 2007-08-15 15:48:03 -06:00
.cvsignore
add_errmsg
client_settings.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
CMakeLists.txt CMakeLists.txt, README, configure.js 2007-08-03 21:51:37 +02:00
custom_conf.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
derror.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
des_key_file.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
discover.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
field.cc Bug #29536: timestamp inconsistent in replication around 1970 2007-08-06 04:57:28 -07:00
field.h Fixed compiler error for Windows in the patch for bug 30219. 2007-08-05 17:12:57 -07:00
field_conv.cc field_conv.cc: 2007-07-12 00:55:40 +05:00
filesort.cc Bug#15130: CREATE .. SELECT was denied to use advantages of the SQL_BIG_RESULT. 2007-07-24 18:15:44 +04:00
frm_crypt.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
gen_lex_hash.cc gen_lex_hash.cc: 2007-01-31 00:06:42 +01:00
gstream.cc Many files: 2006-12-23 20:17:15 +01:00
gstream.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
ha_archive.cc BUG#29207 - archive table reported as corrupt by check table (P1) 2007-06-27 13:19:34 +05:00
ha_archive.h Merge bk-internal.mysql.com:/home/bk/mysql-5.0 2007-01-22 14:04:40 +02:00
ha_berkeley.cc BUG#28591: make the fix work for BDB tables too: 2007-07-26 20:52:53 +04:00
ha_berkeley.h Fixed compiler warnings (for linux and win32 and win64) 2007-02-22 16:59:57 +02:00
ha_blackhole.cc Bug#19717: The blackhole engine is returning an OK flag in 2007-02-14 18:35:59 +02:00
ha_blackhole.h Merge mysql.com:/home/svoj/devel/mysql/BUG27998/mysql-4.1-engines 2007-05-10 18:14:04 +05:00
ha_federated.cc fix pushbuild failures 2007-07-25 17:22:52 -07:00
ha_federated.h Merge ramayana.hindu.god:/home/tsmith/m/bk/50 2007-08-01 18:14:50 -06:00
ha_heap.cc Mark deadcode for gcov 2007-07-18 11:12:15 +04:00
ha_heap.h [pb problem]: ha_heap->clone() fails on windows because of mess with 2007-07-17 19:51:50 +04:00
ha_innodb.cc NULL MERGE this ChangeSet to 5.1 2007-08-15 17:20:54 -06:00
ha_innodb.h Apply innodb-5.0-ss1405 snapshot 2007-04-18 19:36:22 -06:00
ha_myisam.cc Merge gleb.loc:/home/uchum/work/bk/5.0 2007-07-19 19:57:53 +05:00
ha_myisam.h Bug#28249 Query Cache returns wrong result with concurrent insert / certain lock 2007-07-12 13:29:51 +02:00
ha_myisammrg.cc BUG#26976 - Missing table in merge not noted in related error msg + 2007-06-14 16:18:01 +05:00
ha_myisammrg.h BUG#26976 - Missing table in merge not noted in related error msg + 2007-06-06 04:42:41 +05:00
ha_ndbcluster.cc (pushing for Andrei) 2007-07-30 18:27:36 +03:00
ha_ndbcluster.h Merge dev3-221.dev.cn.tlan:/home/ngb/mysql/mysql-5.0/mysql-5.0-ndb-bj 2007-05-08 10:00:12 +08:00
ha_ndbcluster_cond.cc Back-ported compiler warning fixes from 5.1 to ease merging 2007-04-24 10:25:15 +02:00
ha_ndbcluster_cond.h Bug #29185 Large IN list crashes mysqld with cluster and condition pushdown 2007-06-19 13:56:02 +02:00
handler.cc bug#28570: handler::index_read() is called with different find_flag when 2007-08-15 09:23:44 +02:00
handler.h Merge tsmith@bk-internal.mysql.com:/home/bk/mysql-5.0-opt 2007-08-01 18:39:13 -06:00
hash_filo.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
hash_filo.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
hostname.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
init.cc Fix for bug #28121 "INSERT or UPDATE into DOUBLE(200,0) field being truncated to 31 digits" 2007-05-28 12:44:59 +04:00
item.cc Fixed bug #30287. 2007-08-21 01:39:39 +05:00
item.h Merge mkindahl@bk-internal.mysql.com:/home/bk/mysql-5.0-rpl 2007-08-03 18:59:16 +02:00
item_buff.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
item_cmpfunc.cc item_cmpfunc.cc: 2007-07-16 01:03:58 +04:00
item_cmpfunc.h Merge weblab.(none):/home/marcsql/TREE/mysql-5.0-base 2007-08-30 17:23:40 -06:00
item_create.cc Fix for bug #30200: mysqlbinlog.test: connection_id() not restored under ps-protocol 2007-08-02 14:51:03 +05:00
item_create.h Bug #27921 View ignores precision for CAST() 2007-05-10 00:17:21 +05:00
item_func.cc Merge mkindahl@bk-internal.mysql.com:/home/bk/mysql-5.0-rpl 2007-08-03 18:59:16 +02:00
item_func.h Fixed bug #29338. 2007-07-19 18:39:01 +05:00
item_geofunc.cc Merge rkalimullin@bk-internal.mysql.com:/home/bk/mysql-5.0-maint 2007-03-05 18:22:35 +04:00
item_geofunc.h Merge mysql.com:/home/ram/work/b26038/b26038.4.1 2007-02-28 12:13:46 +04:00
item_row.cc Many files: 2006-12-23 20:17:15 +01:00
item_row.h Merge bk-internal.mysql.com:/home/bk/mysql-5.0 2007-01-22 14:04:40 +02:00
item_strfunc.cc Merge mysql.com:/home/bar/mysql-work/mysql-5.0.b28875 2007-08-03 15:30:31 +05:00
item_strfunc.h Bug #29878 Garbage data generation when executing SESSION_USER() on a slave. 2007-07-27 18:42:25 +05:00
item_subselect.cc Bug#27333: subquery grouped for aggregate of outer 2007-06-29 10:39:17 +03:00
item_subselect.h Fixed bug #27870. The bug that causes crashes manifests itself at some 2007-04-17 17:35:29 -07:00
item_sum.cc Bug#29850: Wrong charset of GROUP_CONCAT result when the select employs 2007-07-19 20:21:23 +04:00
item_sum.h Bug#27333: subquery grouped for aggregate of outer 2007-06-29 10:39:17 +03:00
item_timefunc.cc Merge mysql.com:/home/bar/mysql-work/mysql-5.0.b28875 2007-08-03 15:30:31 +05:00
item_timefunc.h Backport of TIME->MYSQL_TIME / Y2K fixset 2007-05-16 10:44:59 +02:00
item_uniq.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
item_uniq.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
key.cc Patch to eliminate compilation errors under VC after bug #13191 fix. 2007-04-29 12:56:46 +05:00
lex.h Fix -ansi -pedantic warning (can't cast a pointer to function 2007-03-08 12:04:45 +03:00
lex_symbol.h Fix -ansi -pedantic warning (can't cast a pointer to function 2007-03-08 12:04:45 +03:00
lock.cc Bug#25164 create table a as select * from A hangs 2007-08-27 10:13:54 -03:00
log.cc (pushing for Andrei) 2007-07-30 18:27:36 +03:00
log_event.cc Fix for bug #29928: INSERT ... VALUES(connection_id(), ...) incorrect 2007-08-01 15:27:03 +05:00
log_event.h Bug#22725 Replication outages from ER_SERVER_SHUTDOWN (1053) set in replication events 2007-05-28 22:20:22 +03:00
Makefile.am Bug#29414 HPUX build fails - 'noinst_HEADERS' does not exist 2007-06-28 11:13:18 +02:00
matherr.c my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
message.mc make dist changes for Cmake build 2006-09-01 10:32:12 +02:00
mf_iocache.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
my_decimal.cc Backport of TIME->MYSQL_TIME / Y2K fixset 2007-05-16 10:44:59 +02:00
my_decimal.h Merge bk-internal.mysql.com:/data0/bk/mysql-5.0 2007-05-28 00:05:38 +02:00
my_lock.c my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
mysql_priv.h Bug#16918: Aborted_clients > Connections. 2007-09-13 17:30:44 +04:00
mysqld.cc Fix for Bug#27970 "Fix for bug 24507 makes mysql_install_db fail" 2007-08-16 17:25:48 +03:00
mysqld_suffix.h Many files: 2006-12-23 20:17:15 +01:00
net_serv.cc Merge mysql.com:/home/hf/work/29117/my41-29117 2007-06-19 12:31:37 +05:00
nt_servc.cc
nt_servc.h
opt_range.cc Merge mhansson@bk-internal.mysql.com:/home/bk/mysql-5.0-opt 2007-08-16 14:13:07 +02:00
opt_range.h Merge bk-internal.mysql.com:/home/bk/mysql-5.0 2007-01-22 14:04:40 +02:00
opt_sum.cc Bug#27573: MIN() on an indexed column which is always NULL sets _other_ results 2007-05-15 15:29:12 +03:00
parse_file.cc Polishing: add comments. 2007-04-06 18:56:39 +04:00
parse_file.h Many files: 2006-12-23 20:17:15 +01:00
password.c Merge bk-internal.mysql.com:/home/bk/mysql-5.0 2007-01-22 14:04:40 +02:00
procedure.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
procedure.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
protocol.cc Backport of TIME->MYSQL_TIME / Y2K fixset 2007-05-16 10:44:59 +02:00
protocol.h Backport of TIME->MYSQL_TIME / Y2K fixset 2007-05-16 10:44:59 +02:00
records.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
repl_failsafe.cc Merge bk-internal.mysql.com:/home/bk/mysql-5.0 2007-02-21 14:07:08 +02:00
repl_failsafe.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
set_var.cc (pushing for Andrei) 2007-07-30 18:27:36 +03:00
set_var.h Merge bk-internal.mysql.com:/home/bk/mysql-5.0 2007-02-21 14:07:08 +02:00
slave.cc Merge polly.local:/home/kaa/src/maint/bug24192/my50-bug24192 2007-07-11 19:29:11 +04:00
slave.h Fix for BUG#24432 2007-02-08 15:53:14 +01:00
sp.cc Allow mysql.proc to have extra (unknown) fields. 2007-07-25 18:38:52 +04:00
sp.h Many files: 2006-12-23 20:17:15 +01:00
sp_cache.cc Many files: 2006-12-23 20:17:15 +01:00
sp_cache.h Many files: 2006-12-23 20:17:15 +01:00
sp_head.cc Merge gkodinov@bk-internal.mysql.com:/home/bk/mysql-5.0-opt 2007-07-31 15:23:25 +03:00
sp_head.h A fix and a test case for Bug#26141 mixing table types in trigger 2007-07-12 22:26:41 +04:00
sp_pcontext.cc Bug#26503 (Illegal SQL exception handler code causes the server to crash) 2007-03-14 12:02:32 -06:00
sp_pcontext.h Bug#26503 (Illegal SQL exception handler code causes the server to crash) 2007-03-14 12:02:32 -06:00
sp_rcontext.cc Bug#24989: The DEADLOCK error is improperly handled by InnoDB. 2007-07-30 17:14:34 +04:00
sp_rcontext.h Bug#24989: The DEADLOCK error is improperly handled by InnoDB. 2007-07-30 17:14:34 +04:00
spatial.cc Bug #29166: 2007-07-05 18:24:48 +03:00
spatial.h Bug #24563: MBROverlaps does not seem to function propertly. 2007-03-23 16:28:07 -06:00
sql_acl.cc BUG#29030 (DROP USER command that errors still gets written to binary log 2007-06-20 14:24:31 +02:00
sql_acl.h Bug#20166 mysql-test-run.pl does not test system privilege tables creation 2007-03-16 20:56:16 +01:00
sql_analyse.cc Merge rkalimullin@bk-internal.mysql.com:/home/bk/mysql-5.0-maint 2007-02-06 17:18:43 +04:00
sql_analyse.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_array.h Many files: 2006-12-23 20:17:15 +01:00
sql_base.cc Merge pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-marvel 2007-08-23 17:43:47 +02:00
sql_bitmap.h Many files: 2006-12-23 20:17:15 +01:00
sql_cache.cc Merge adventure.(none):/home/thek/Development/cpp/bug21074/my50-bug21074 2007-09-03 13:46:10 +02:00
sql_cache.h Bug #30269 Query cache eats memory 2007-08-17 16:55:20 +02:00
sql_class.cc Merge tsmith@bk-internal.mysql.com:/home/bk/mysql-5.0-opt 2007-08-01 18:39:13 -06:00
sql_class.h Merge tsmith@bk-internal.mysql.com:/home/bk/mysql-5.0-opt 2007-08-01 18:39:13 -06:00
sql_client.cc Bug#26664 test suite times out on OS X 64bit 2007-05-24 11:21:27 +02:00
sql_crypt.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_crypt.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_cursor.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_cursor.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_db.cc A fix and a teset case for Bug#28551 The warning 2007-07-05 02:20:32 +04:00
sql_delete.cc (pushing for Andrei) 2007-07-30 18:27:36 +03:00
sql_derived.cc - renaming TMP_TABLE to NON_TRANSACTIONAL_TMP_TABLE because this is 2007-03-22 15:07:32 +01:00
sql_do.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_error.cc Merge bk-internal.mysql.com:/home/bk/mysql-5.0-runtime 2007-06-20 12:46:15 +04:00
sql_error.h BUG#26976 - Missing table in merge not noted in related error msg + 2007-06-06 04:42:41 +05:00
sql_handler.cc Bug#21587 FLUSH TABLES causes server crash when used with HANDLER statements 2007-10-04 17:34:41 -03:00
sql_help.cc Bug #25831: Deficiencies in INSERT ... SELECT ... field name resolving. 2007-02-19 14:39:37 +02:00
sql_insert.cc Bug#28587 SELECT is blocked by INSERT waiting on read lock, even with low_priority_updates 2007-08-30 16:11:53 -03:00
sql_lex.cc Merge weblab.(none):/home/marcsql/TREE/mysql-5.0-base 2007-08-30 17:23:40 -06:00
sql_lex.h Fixed bug #30396. 2007-08-15 10:24:18 -07:00
sql_list.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_list.h Merge of BUG#26624 and BUG#26625 2007-03-29 10:35:28 +04:00
sql_load.cc (pushing for Andrei) 2007-07-30 18:27:36 +03:00
sql_locale.cc Merge mysql.com:/nfsdisk1/lars/bkroot/mysql-5.0-rpl 2007-01-12 12:22:54 +01:00
sql_manager.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_manager.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_map.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_map.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_olap.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_parse.cc Bug#16918: Aborted_clients > Connections. 2007-09-13 17:30:44 +04:00
sql_prepare.cc Merge bk-internal.mysql.com:/home/bk/mysql-5.0-runtime 2007-07-12 23:22:17 +04:00
sql_rename.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_repl.cc Fix for bug #29420: crash with show and purge binlogs 2007-07-05 13:09:56 +05:00
sql_repl.h my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_select.cc Merge gleb.loc:/home/uchum/work/bk/5.0-opt-30287 2007-08-21 19:30:32 +05:00
sql_select.h Merge spetrunia@bk-internal.mysql.com:/home/bk/mysql-5.0-opt 2007-07-31 15:24:22 +04:00
sql_show.cc Merge ramayana.hindu.god:/home/tsmith/m/bk/50 2007-08-27 18:19:55 -06:00
sql_sort.h Fixed bug #25798. 2007-07-01 15:33:28 -07:00
sql_state.c Many files: 2006-12-23 20:17:15 +01:00
sql_string.cc Reversing additional change suggested by Serg 2007-08-07 19:25:45 +05:00
sql_string.h Merge bk-internal.mysql.com:/home/bk/mysql-5.0 2007-01-22 14:04:40 +02:00
sql_table.cc Merge olga.mysql.com:/home/igor/mysql-5.0 2007-08-04 20:53:26 -07:00
sql_test.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
sql_trigger.cc Fixed whitespace 2007-09-04 16:40:27 -06:00
sql_trigger.h A fix and a test case for Bug#26141 mixing table types in trigger 2007-07-12 22:26:41 +04:00
sql_udf.cc Merge bk-internal:/home/bk/mysql-5.0-opt 2007-01-03 18:29:39 +02:00
sql_udf.h Remove typedef st_table_list TABLE_LIST and always use name 'TABLE_LIST'. 2007-07-06 16:18:49 +04:00
sql_union.cc Post-merge fixes 2007-07-31 16:15:56 +04:00
sql_update.cc addendum for the fix for bug 27417: 2007-07-31 14:42:56 +03:00
sql_view.cc Fixed bug #30287. 2007-08-21 01:39:39 +05:00
sql_view.h Many files: 2006-12-23 20:17:15 +01:00
sql_yacc.yy Bug#30625 (Performance, reduce depth for expressions) 2007-08-28 11:16:03 -06:00
stacktrace.c Bug #29543 GCov information not written in case of crash. 2007-07-07 07:46:17 +02:00
stacktrace.h Many files: 2006-12-23 20:17:15 +01:00
strfunc.cc Fixed compiler warnings. 2007-03-22 20:32:07 +02:00
structs.h Bug#28149 overflow in some "SHOW STATUS"-variables 2007-06-09 17:46:09 +05:00
table.cc Merge tsmith@bk-internal.mysql.com:/home/bk/mysql-5.0-opt 2007-08-01 18:39:13 -06:00
table.h Bug #29929 LOCK TABLES does not pre-lock tables used in triggers of the locked tables 2007-07-27 16:56:29 +02:00
thr_malloc.cc my_strtoll10-x86.s: 2006-12-31 01:02:27 +01:00
time.cc Bug #29536: timestamp inconsistent in replication around 1970 2007-08-06 04:57:28 -07:00
tzfile.h Many files: 2006-12-23 20:17:15 +01:00
tztime.cc Backport of TIME->MYSQL_TIME / Y2K fixset 2007-05-16 10:44:59 +02:00
tztime.h Backport of TIME->MYSQL_TIME / Y2K fixset 2007-05-16 10:44:59 +02:00
udf_example.c bug#27741: udf test fails on AIX < 5.3 2007-05-31 14:22:21 +02:00
udf_example.def Fixed compiler warnings (for linux and win32 and win64) 2007-02-22 16:59:57 +02:00
uniques.cc Fixed bug #25798. 2007-07-01 15:33:28 -07:00
unireg.cc Bug #29325: 2007-07-11 10:49:54 +03:00
unireg.h Fixed bug #27352. 2007-08-03 01:58:21 +05:00
watchdog_mysqld