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The problem is that DROP TABLE and other DDL statements failed to automatically close handlers associated with tables that were marked for reopen (FLUSH TABLES). The current implementation fails to properly discard handlers of dropped tables (that were marked for reopen) because it searches on the open handler tables list and using the current alias of the table being dropped. The problem is that it must not use the open handler tables list to search because the table might have been closed (marked for reopen) by a flush tables command and also it must not use the current table alias at all since multiple different aliases may be associated with a single table. This is specially visible when a user has two open handlers (using alias) of a same table and a flush tables command is issued before the table is dropped (see test case). Scanning the handler table list is also useless for dropping handlers associated with temporary tables, because temporary tables are not kept in the THD::handler_tables list. The solution is to simple scan the handlers hash table searching for, and deleting all handlers with matching table names if the reopen flag is not passed to the flush function, indicating that the handlers should be deleted. All matching handlers are deleted even if the associated the table is not open. mysql-test/include/handler.inc: Add test case for Bug#31397 mysql-test/r/handler_innodb.result: Add test case result for Bug#31397 mysql-test/r/handler_myisam.result: Add test case result for Bug#31397 sql/mysql_priv.h: Rename flush functions to better match the intent of the caller and update functions prototypes and remove unused flags. sql/sql_base.cc: Rename flush functions to better match the intent of the caller. sql/sql_class.cc: Rename the flush functions to better match the intent of the caller. The hash_free function is moved to the cleanup. sql/sql_handler.cc: When dropping tables for a final close, scan the handler's hash table since the table might not be in the handlers open table list because the table was marked for reopen or because it's a temporary table. sql/sql_rename.cc: Drop handlers associated with tables that are being renamed. sql/sql_table.cc: Now that temporary tables are properly removed even when opened by a SQL HANDLER, enable the assert since this branch can't be taken outside of SF/trigger/prelocked mode.
694 lines
16 KiB
PHP
694 lines
16 KiB
PHP
# include/handler.inc
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#
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# The variables
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# $engine_type -- storage engine to be tested
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# $other_engine_type -- storage engine <> $engine_type
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# $other_handler_engine_type -- storage engine <> $engine_type, if possible
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# 1. $other_handler_engine_type must support handler
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# 2. $other_handler_engine_type must point to an all
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# time available storage engine
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# 2006-08 MySQL 5.1 MyISAM and MEMORY only
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# have to be set before sourcing this script.
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-- source include/not_embedded.inc
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#
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# test of HANDLER ...
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#
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# Last update:
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# 2006-07-31 ML test refactored (MySQL 5.1)
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# code of t/handler.test and t/innodb_handler.test united
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# main testing code put into include/handler.inc
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#
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eval SET SESSION STORAGE_ENGINE = $engine_type;
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--disable_warnings
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drop table if exists t1,t3,t4,t5;
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--enable_warnings
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create table t1 (a int, b char(10), key a(a), key b(a,b));
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insert into t1 values
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(17,"ddd"),(18,"eee"),(19,"fff"),(19,"yyy"),
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(14,"aaa"),(15,"bbb"),(16,"ccc"),(16,"xxx"),
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(20,"ggg"),(21,"hhh"),(22,"iii");
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handler t1 open as t2;
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-- error 1064
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handler t2 read a=(SELECT 1);
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handler t2 read a first;
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handler t2 read a next;
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handler t2 read a next;
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handler t2 read a prev;
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handler t2 read a last;
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handler t2 read a prev;
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handler t2 read a prev;
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handler t2 read a first;
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handler t2 read a prev;
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handler t2 read a last;
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handler t2 read a prev;
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handler t2 read a next;
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handler t2 read a next;
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handler t2 read a=(15);
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handler t2 read a=(16);
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--error 1070
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handler t2 read a=(19,"fff");
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handler t2 read b=(19,"fff");
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handler t2 read b=(19,"yyy");
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handler t2 read b=(19);
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--error 1109
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handler t1 read a last;
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handler t2 read a=(11);
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handler t2 read a>=(11);
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handler t2 read a=(18);
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handler t2 read a>=(18);
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handler t2 read a>(18);
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handler t2 read a<=(18);
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handler t2 read a<(18);
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handler t2 read a first limit 5;
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handler t2 read a next limit 3;
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handler t2 read a prev limit 10;
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handler t2 read a>=(16) limit 4;
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handler t2 read a>=(16) limit 2,2;
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handler t2 read a last limit 3;
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handler t2 read a=(19);
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handler t2 read a=(19) where b="yyy";
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handler t2 read first;
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handler t2 read next;
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handler t2 read next;
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--error 1064
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handler t2 read last;
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handler t2 close;
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handler t1 open;
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handler t1 read a next; # this used to crash as a bug#5373
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handler t1 read a next;
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handler t1 close;
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handler t1 open;
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handler t1 read a prev; # this used to crash as a bug#5373
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handler t1 read a prev;
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handler t1 close;
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handler t1 open as t2;
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handler t2 read first;
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eval alter table t1 engine = $engine_type;
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--error 1109
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handler t2 read first;
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#
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# DROP TABLE / ALTER TABLE
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#
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handler t1 open as t2;
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drop table t1;
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create table t1 (a int);
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insert into t1 values (17);
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--error 1109
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handler t2 read first;
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handler t1 open as t2;
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eval alter table t1 engine=$other_engine_type;
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--error 1109
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handler t2 read first;
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drop table t1;
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#
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# Test case for the bug #787
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#
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create table t1 (a int);
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insert into t1 values (1),(2),(3),(4),(5),(6);
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delete from t1 limit 2;
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handler t1 open;
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handler t1 read first;
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handler t1 read first limit 1,1;
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handler t1 read first limit 2,2;
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delete from t1 limit 3;
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handler t1 read first;
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drop table t1;
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#
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# Test for #751
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#
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create table t1(a int, index(a));
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insert into t1 values (1), (2), (3);
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handler t1 open;
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--error 1054
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handler t1 read a=(W);
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--error 1210
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handler t1 read a=(a);
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drop table t1;
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#
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# BUG#2304
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#
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create table t1 (a char(5));
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insert into t1 values ("Ok");
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handler t1 open as t;
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handler t read first;
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use mysql;
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handler t read first;
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handler t close;
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handler test.t1 open as t;
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handler t read first;
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handler t close;
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use test;
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drop table t1;
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#
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# BUG#3649
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#
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create table t1 ( a int, b int, INDEX a (a) );
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insert into t1 values (1,2), (2,1);
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handler t1 open;
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handler t1 read a=(1) where b=2;
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handler t1 read a=(1) where b=3;
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handler t1 read a=(1) where b=1;
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handler t1 close;
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drop table t1;
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#
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# Check if two database names beginning the same are seen as different.
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#
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# This database begins like the usual 'test' database.
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#
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--disable_warnings
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drop database if exists test_test;
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--enable_warnings
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create database test_test;
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use test_test;
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create table t1(table_id char(20) primary key);
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insert into t1 values ('test_test.t1');
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insert into t1 values ('');
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handler t1 open;
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handler t1 read first limit 9;
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create table t2(table_id char(20) primary key);
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insert into t2 values ('test_test.t2');
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insert into t2 values ('');
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handler t2 open;
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handler t2 read first limit 9;
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#
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# This is the usual 'test' database.
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#
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use test;
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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create table t1(table_id char(20) primary key);
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insert into t1 values ('test.t1');
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insert into t1 values ('');
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--error 1066
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handler t1 open;
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#
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# Check accesibility of all the tables.
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#
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use test;
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--error 1064
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handler test.t1 read first limit 9;
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--error 1064
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handler test_test.t1 read first limit 9;
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handler t1 read first limit 9;
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--error 1064
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handler test_test.t2 read first limit 9;
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handler t2 read first limit 9;
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#
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# Cleanup.
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#
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--error 1064
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handler test_test.t1 close;
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handler t1 close;
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drop table test_test.t1;
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--error 1064
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handler test_test.t2 close;
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handler t2 close;
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drop table test_test.t2;
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drop database test_test;
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#
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use test;
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--error 1064
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handler test.t1 close;
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--error 1109
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handler t1 close;
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drop table test.t1;
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#
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# BUG#4335
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#
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--disable_warnings
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drop database if exists test_test;
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drop table if exists t1;
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drop table if exists t2;
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drop table if exists t3;
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--enable_warnings
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create database test_test;
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use test_test;
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create table t1 (c1 char(20));
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insert into t1 values ('test_test.t1');
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create table t3 (c1 char(20));
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insert into t3 values ('test_test.t3');
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handler t1 open;
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handler t1 read first limit 9;
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handler t1 open h1;
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handler h1 read first limit 9;
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use test;
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create table t1 (c1 char(20));
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create table t2 (c1 char(20));
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create table t3 (c1 char(20));
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insert into t1 values ('t1');
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insert into t2 values ('t2');
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insert into t3 values ('t3');
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--error 1066
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handler t1 open;
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--error 1066
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handler t2 open t1;
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--error 1066
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handler t3 open t1;
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handler t1 read first limit 9;
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--error 1064
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handler test.t1 close;
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--error 1066
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handler test.t1 open h1;
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--error 1066
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handler test_test.t1 open h1;
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handler test_test.t3 open h3;
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handler test.t1 open h2;
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handler t1 read first limit 9;
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handler h1 read first limit 9;
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handler h2 read first limit 9;
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handler h3 read first limit 9;
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handler h2 read first limit 9;
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--error 1064
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handler test.h1 close;
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handler t1 close;
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handler h1 close;
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handler h2 close;
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--error 1109
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handler t1 read first limit 9;
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--error 1109
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handler h1 read first limit 9;
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--error 1109
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handler h2 read first limit 9;
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handler h3 read first limit 9;
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handler h3 read first limit 9;
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use test_test;
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handler h3 read first limit 9;
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--error 1064
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handler test.h3 read first limit 9;
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handler h3 close;
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use test;
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drop table t3;
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drop table t2;
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drop table t1;
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drop database test_test;
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#
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# Test if fix for BUG#4286 correctly closes handler tables.
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#
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create table t1 (c1 char(20));
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insert into t1 values ("t1");
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handler t1 open as h1;
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handler h1 read first limit 9;
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create table t2 (c1 char(20));
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insert into t2 values ("t2");
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handler t2 open as h2;
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handler h2 read first limit 9;
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create table t3 (c1 char(20));
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insert into t3 values ("t3");
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handler t3 open as h3;
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handler h3 read first limit 9;
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create table t4 (c1 char(20));
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insert into t4 values ("t4");
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handler t4 open as h4;
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handler h4 read first limit 9;
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create table t5 (c1 char(20));
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insert into t5 values ("t5");
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handler t5 open as h5;
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handler h5 read first limit 9;
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# close first
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eval alter table t1 engine=$other_handler_engine_type;
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--error 1109
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handler h1 read first limit 9;
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handler h2 read first limit 9;
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handler h3 read first limit 9;
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handler h4 read first limit 9;
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handler h5 read first limit 9;
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# close last
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eval alter table t5 engine=$other_handler_engine_type;
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--error 1109
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handler h1 read first limit 9;
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handler h2 read first limit 9;
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handler h3 read first limit 9;
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handler h4 read first limit 9;
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--error 1109
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handler h5 read first limit 9;
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# close middle
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eval alter table t3 engine=$other_handler_engine_type;
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--error 1109
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handler h1 read first limit 9;
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handler h2 read first limit 9;
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--error 1109
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handler h3 read first limit 9;
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handler h4 read first limit 9;
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--error 1109
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handler h5 read first limit 9;
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handler h2 close;
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handler h4 close;
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# close all depending handler tables
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handler t1 open as h1_1;
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handler t1 open as h1_2;
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handler t1 open as h1_3;
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handler h1_1 read first limit 9;
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handler h1_2 read first limit 9;
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handler h1_3 read first limit 9;
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eval alter table t1 engine=$engine_type;
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--error 1109
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handler h1_1 read first limit 9;
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--error 1109
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handler h1_2 read first limit 9;
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--error 1109
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handler h1_3 read first limit 9;
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drop table t1;
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drop table t2;
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drop table t3;
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drop table t4;
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drop table t5;
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#
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# Bug#14397 - OPTIMIZE TABLE with an open HANDLER causes a crash
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#
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create table t1 (c1 int);
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insert into t1 values (1);
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# client 1
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handler t1 open;
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handler t1 read first;
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# client 2
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connect (con2,localhost,root,,);
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connection con2;
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--exec echo send the below to another connection, do not wait for the result
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send optimize table t1;
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--sleep 1
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# client 1
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--exec echo proceed with the normal connection
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connection default;
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handler t1 read next;
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handler t1 close;
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# client 2
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--exec echo read the result from the other connection
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connection con2;
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reap;
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# client 1
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--exec echo proceed with the normal connection
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connection default;
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drop table t1;
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CREATE TABLE t1 ( no1 smallint(5) NOT NULL default '0', no2 int(10) NOT NULL default '0', PRIMARY KEY (no1,no2));
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INSERT INTO t1 VALUES (1,274),(1,275),(2,6),(2,8),(4,1),(4,2);
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HANDLER t1 OPEN;
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HANDLER t1 READ `primary` = (1, 1000);
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HANDLER t1 READ `primary` PREV;
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DROP TABLE t1;
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# End of 4.1 tests
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#
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# Addendum to Bug#14397 - OPTIMIZE TABLE with an open HANDLER causes a crash
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# Show that DROP TABLE can no longer deadlock against
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# FLUSH TABLES WITH READ LOCK. This is a 5.0 issue.
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#
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create table t1 (c1 int);
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insert into t1 values (14397);
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flush tables with read lock;
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# The thread with the global read lock cannot drop the table itself:
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--error 1223
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drop table t1;
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#
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# client 2
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# We need a second connection to try the drop.
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# The drop waits for the global read lock to go away.
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# Without the addendum fix it locked LOCK_open before entering the wait loop.
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connection con2;
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--exec echo send the below to another connection, do not wait for the result
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send drop table t1;
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--sleep 1
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#
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# client 1
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# Now we need something that wants LOCK_open. A simple table access which
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# opens the table does the trick.
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--exec echo proceed with the normal connection
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connection default;
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# This would hang on LOCK_open without the 5.0 addendum fix.
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select * from t1;
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# Release the read lock. This should make the DROP go through.
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unlock tables;
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#
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# client 2
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# Read the result of the drop command.
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connection con2;
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--exec echo read the result from the other connection
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reap;
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#
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# client 1
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# Now back to normal operation. The table should not exist any more.
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--exec echo proceed with the normal connection
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connection default;
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--error 1146
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select * from t1;
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# Just to be sure and not confuse the next test case writer.
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drop table if exists t1;
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#
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# Bug#25856 - HANDLER table OPEN in one connection lock DROP TABLE in another one
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#
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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eval create table t1 (a int) ENGINE=$other_engine_type;
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--echo --> client 2
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connection con2;
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--error 1031
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handler t1 open;
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--echo --> client 1
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connection default;
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drop table t1;
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#
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# Bug#30632 HANDLER read failure causes hang
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#
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--disable_warnings
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drop table if exists t1;
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--enable_warnings
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create table t1 (a int);
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handler t1 open as t1_alias;
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--error 1176
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handler t1_alias read a next;
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--error 1054
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handler t1_alias READ a next where inexistent > 0;
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--error 1176
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handler t1_alias read a next;
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--error 1054
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handler t1_alias READ a next where inexistent > 0;
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handler t1_alias close;
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drop table t1;
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#
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# Bug#21587 FLUSH TABLES causes server crash when used with HANDLER statements
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#
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--disable_warnings
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drop table if exists t1,t2;
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--enable_warnings
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create table t1 (c1 int);
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create table t2 (c1 int);
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insert into t1 values (1);
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insert into t2 values (2);
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--echo connection: default
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handler t1 open;
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handler t1 read first;
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connect (flush,localhost,root,,);
|
|
connection flush;
|
|
--echo connection: flush
|
|
--send flush tables;
|
|
connection default;
|
|
--echo connection: default
|
|
let $wait_condition=
|
|
select count(*) = 1 from information_schema.processlist
|
|
where state = "Flushing tables";
|
|
--source include/wait_condition.inc
|
|
handler t2 open;
|
|
handler t2 read first;
|
|
handler t1 read next;
|
|
handler t1 close;
|
|
handler t2 close;
|
|
connection flush;
|
|
reap;
|
|
connection default;
|
|
drop table t1,t2;
|
|
disconnect flush;
|
|
|
|
#
|
|
# Bug#31409 RENAME TABLE causes server crash or deadlock when used with HANDLER statements
|
|
#
|
|
|
|
--disable_warnings
|
|
drop table if exists t1,t2;
|
|
--enable_warnings
|
|
create table t1 (c1 int);
|
|
--echo connection: default
|
|
handler t1 open;
|
|
handler t1 read first;
|
|
connect (flush,localhost,root,,);
|
|
connection flush;
|
|
--echo connection: flush
|
|
--send rename table t1 to t2;
|
|
connection default;
|
|
--echo connection: default
|
|
let $wait_condition=
|
|
select count(*) = 1 from information_schema.processlist
|
|
where state = "Waiting for table" and info = "rename table t1 to t2";
|
|
--source include/wait_condition.inc
|
|
handler t2 open;
|
|
handler t2 read first;
|
|
--error ER_NO_SUCH_TABLE
|
|
handler t1 read next;
|
|
handler t1 close;
|
|
handler t2 close;
|
|
connection flush;
|
|
reap;
|
|
connection default;
|
|
drop table t2;
|
|
disconnect flush;
|
|
|
|
#
|
|
# Bug#30882 Dropping a temporary table inside a stored function may cause a server crash
|
|
#
|
|
# Test HANDLER statements in conjunction with temporary tables. While the temporary table
|
|
# is open by a HANDLER, no other statement can access it.
|
|
#
|
|
|
|
--disable_warnings
|
|
drop table if exists t1;
|
|
--enable_warnings
|
|
create temporary table t1 (a int, b char(1), key a(a), key b(a,b));
|
|
insert into t1 values (0,"a"),(1,"b"),(2,"c"),(3,"d"),(4,"e"),
|
|
(5,"f"),(6,"g"),(7,"h"),(8,"i"),(9,"j");
|
|
select a,b from t1;
|
|
handler t1 open as a1;
|
|
handler a1 read a first;
|
|
handler a1 read a next;
|
|
handler a1 read a next;
|
|
--error ER_CANT_REOPEN_TABLE
|
|
select a,b from t1;
|
|
handler a1 read a prev;
|
|
handler a1 read a prev;
|
|
handler a1 read a=(6) where b="g";
|
|
handler a1 close;
|
|
select a,b from t1;
|
|
handler t1 open as a2;
|
|
handler a2 read a first;
|
|
handler a2 read a last;
|
|
handler a2 read a prev;
|
|
handler a2 close;
|
|
drop table t1;
|
|
|
|
#
|
|
# Bug#31397 Inconsistent drop table behavior of handler tables.
|
|
#
|
|
|
|
--disable_warnings
|
|
drop table if exists t1,t2;
|
|
--enable_warnings
|
|
create table t1 (a int);
|
|
handler t1 open as t1_alias;
|
|
drop table t1;
|
|
create table t1 (a int);
|
|
handler t1 open as t1_alias;
|
|
flush tables;
|
|
drop table t1;
|
|
create table t1 (a int);
|
|
handler t1 open as t1_alias;
|
|
handler t1_alias close;
|
|
drop table t1;
|
|
create table t1 (a int);
|
|
handler t1 open as t1_alias;
|
|
handler t1_alias read first;
|
|
drop table t1;
|
|
--error ER_UNKNOWN_TABLE
|
|
handler t1_alias read next;
|
|
|
|
# Test that temporary tables associated with handlers are properly dropped.
|
|
|
|
create table t1 (a int);
|
|
create temporary table t2 (a int, key(a));
|
|
handler t1 open as a1;
|
|
handler t2 open as a2;
|
|
handler a2 read a first;
|
|
drop table t1, t2;
|
|
--error ER_UNKNOWN_TABLE
|
|
handler a2 read a next;
|
|
--error ER_UNKNOWN_TABLE
|
|
handler a1 close;
|
|
|
|
# Alter table drop handlers
|
|
|
|
create table t1 (a int, key(a));
|
|
create table t2 like t1;
|
|
handler t1 open as a1;
|
|
handler t2 open as a2;
|
|
handler a1 read a first;
|
|
handler a2 read a first;
|
|
alter table t1 add b int;
|
|
--error ER_UNKNOWN_TABLE
|
|
handler a1 close;
|
|
handler a2 close;
|
|
drop table t1, t2;
|
|
|
|
# Rename table drop handlers
|
|
|
|
create table t1 (a int, key(a));
|
|
handler t1 open as a1;
|
|
handler a1 read a first;
|
|
rename table t1 to t2;
|
|
--error ER_UNKNOWN_TABLE
|
|
handler a1 read a first;
|
|
drop table t2;
|
|
|
|
# Optimize table drop handlers
|
|
|
|
create table t1 (a int, key(a));
|
|
create table t2 like t1;
|
|
handler t1 open as a1;
|
|
handler t2 open as a2;
|
|
handler a1 read a first;
|
|
handler a2 read a first;
|
|
optimize table t1;
|
|
--error ER_UNKNOWN_TABLE
|
|
handler a1 close;
|
|
handler a2 close;
|
|
drop table t1, t2;
|
|
|
|
# Flush tables causes handlers reopen
|
|
|
|
create table t1 (a int, b char(1), key a(a), key b(a,b));
|
|
insert into t1 values (0,"a"),(1,"b"),(2,"c"),(3,"d"),(4,"e"),
|
|
(5,"f"),(6,"g"),(7,"h"),(8,"i"),(9,"j");
|
|
handler t1 open;
|
|
handler t1 read a first;
|
|
handler t1 read a next;
|
|
flush tables;
|
|
handler t1 read a next;
|
|
handler t1 read a next;
|
|
flush tables with read lock;
|
|
handler t1 read a next;
|
|
unlock tables;
|
|
drop table t1;
|
|
--error ER_UNKNOWN_TABLE
|
|
handler t1 read a next;
|