The problem was in a test case for Bug33507:
- when the number of active connections reaches the limit,
the server accepts only root connections. That's achieved by
accepting a connection, negotiating with the client and
checking user credentials. If it is not SUPER, the connection
is dropped.
- when the server accepts connection, it increases the counter;
- when the server drops connection, it decreases the counter;
- the race was in between of decreasing the counter and accepting
new connection:
- max_user_connections = 2;
- 2 oridinary user connections accepted;
- extra user connection is establishing;
- server checked user credentials, and sent 'Too many connections'
error;
- the client receives the error and establishes extra SUPER user
connection;
- the server however didn't decrease the counter (the extra
user connection still is "alive" in the server) -- so, the new
SUPER-user connection, will be dropped, because it exceeds
(max_user_connections + 1).
The fix is to implement "safe connect", which makes several attempts
to connect and use it in the test script.
mysql-test/r/connect.result:
Update test file.
mysql-test/t/connect.test:
Avoid races in connect.test.
mysql-test/include/connect2.inc:
Auxiliary routine to establish a connection reliably.
in some case.
ER_CON_COUNT_ERROR is defined with SQL state 08004. However, this SQL state is not always
returned.
This error can be thrown in two cases:
1. when an ordinary user (a user w/o SUPER privilege) is connecting,
and the number of active user connections is equal or greater than
max_connections.
2. when a user is connecting and the number of active user connections is
already (max_connections + 1) -- that means that no more connections will
be accepted regardless of the user credentials.
In the 1-st case, SQL state is correct.
The bug happens in the 2-nd case -- on UNIX the client gets 00000 SQL state, which is
absolutely wrong (00000 means "not error SQL state); on Windows
the client accidentally gets HY000 (which means "unknown SQL state).
The cause of the problem is that the server rejects extra connection
prior to read a packet with client capabilities. Thus, the server
does not know if the client supports SQL states or not (if the client
supports 4.1 protocol or not). So, the server supposes the worst and
does not send SQL state at all.
The difference in behavior on UNIX and Windows occurs because on Windows
CLI_MYSQL_REAL_CONNECT() invokes create_shared_memory(), which returns
an error (in default configuration, where shared memory is not configured).
Then, the client does not reset this error, so when the connection is
rejected, SQL state is HY000 (from the error from create_shared_memory()).
The bug appeared after test case for Bug#33507 -- before that, this behavior
just had not been tested.
The fix is to 1) reset the error after create_shared_memory();
2) set SQL state to 'unknown error' if it was not received from
the server.
A separate test case is not required, since the behavior is already
tested in connect.test.
Note for doc-team: the manual should be updated to say that under
some circumstances, 'Too many connections' has HY000 SQL state.
mysql-test/r/connect.result:
Update result file.
sql-common/client.c:
1. Reset an error from create_shared_memory();
2. Set SQL state to 'unknown error' if it was not received from
the server.
The problem is that since MyISAM's concurrent_insert is on by
default some concurrent SELECT statements might not see changes
made by INSERT statements in other connections, even if the
INSERT statement has returned.
The solution is to disable concurrent_insert so that INSERT
statements returns after the data is actually visible to other
statements.
mysql-test/r/flush_read_lock_kill.result:
Restore old value of @@global.concurrent_insert
mysql-test/r/kill.result:
Restore old value of @@global.concurrent_insert
mysql-test/r/sp_notembedded.result:
Update test case result
mysql-test/t/flush_read_lock_kill.test:
Restore old value of @@global.concurrent_insert so it
doesn't affect other tests.
mysql-test/t/kill.test:
Restore old value of @@global.concurrent_insert so it
doesn't affect other tests.
mysql-test/t/sp_notembedded.test:
Disable and restore concurrent_insert value at the end of the
test case. The test case for Bug 29936 requires that the inserted
rows need to be visible before a SELECT statement is queued in
another connection.
Remove sleep at the start of the test, it's not necessary to log
the result of the processlist command, showing the warnings has
the same end result.
The problem was that number of threads was used to calculate
max_used_connections.
The fix is to use number of active connections.
mysql-test/r/connect.result:
Update result file.
mysql-test/t/connect.test:
- Add a test case for Bug#35074: max_used_connections is not correct;
- Make a test case for Bug#33507 more stable.
sql/mysqld.cc:
Use number of connections insetad of threads
to calculate max_used_connections.
than max_connections -- which results in user lockout.
The problem was that the variable thread_count that contains
the number of active threads was interpreted as a number of
active connections.
The fix is to introduce a new counter for active connections.
mysql-test/r/connect.result:
A test case for Bug#33507: Event scheduler creates more threads
than max_connections -- which results in user lockout.
mysql-test/t/connect.test:
A test case for Bug#33507: Event scheduler creates more threads
than max_connections -- which results in user lockout.
sql/mysql_priv.h:
1. Polishing: login_connection() and end_connection() need not
to be public.
2. Introduce connection_count -- a variable to contain the number
of active connections. It is protected by LOCK_connection_count.
sql/mysqld.cc:
Use connection_count to count active connections.
sql/sql_connect.cc:
1. Use connection_count to count active connections.
2. Make login_connection(), end_connection() private for the module
as they had to be.
In cases when TRUNCATE was executed by invoking mysql_delete() rather
than by table recreation (for example, when TRUNCATE was issued on
InnoDB table with is referenced by foreign key) triggers were invoked.
In debug builds this also led to crash because of an assertion, which
assumes that some preliminary actions take place before trigger
invocation, which doesn't happen in case of TRUNCATE.
The fix is not to execute triggers in mysql_delete() when this
function is used by TRUNCATE.
mysql-test/r/trigger-trans.result:
Update result file.
mysql-test/t/trigger-trans.test:
A test case for Bug#34643: TRUNCATE crash if trigger and foreign key.
sql/sql_delete.cc:
Do not process triggers in TRUNCATE.
The initial value of free memory blocks in 0. When the query cache is enabled
a new memory block gets allocated and is assigned number 1. The free memory
block is later split each time query cache memory is allocated for new blocks.
This means that the free memory block counter won't be reduced to zero when
the number of allocated blocks are zero, but rather one. To avoid confusion
this patch changes this behavior so that the free memory block counter is
reset to zero when the query cache is disabled.
Note that when the query cache is enabled and resized the free memory block
counter was still calculated correctly.
mysql-test/r/query_cache.result:
test case
mysql-test/t/query_cache.test:
test case
sql/sql_cache.cc:
Restore the memory block count to 0 for consistency.
It's impossible to determine which test inside mysql_client_test
failed if the log file is overwritten by mysqltest when dumping
the test case results. Redirect mysql_client_test output to a
separate file.
mysql-test/t/mysql_client_test.test:
Redirect mysql_client_test output to a separate log file so
it doesn't get overwritten by mysqltest.
into buzz.(none):/home/davi/mysql-5.1-runtime
mysql-test/r/ps.result:
Auto merged
mysql-test/t/limit.test:
Auto merged
mysql-test/t/ps.test:
Auto merged
sql/item.h:
Auto merged
sql/item_func.cc:
Auto merged
sql/sql_class.h:
Auto merged
sql/item.cc:
Auto merged
mysql-test/suite/rpl/r/rpl_user_variables.result:
Manual merge
mysql-test/suite/rpl/t/rpl_user_variables.test:
Manual merge
sql/sql_yacc.yy:
Manual merge
The problem is that passing anything other than a integer to a limit
clause in a prepared statement would fail. This limitation was introduced
to avoid replication problems (e.g: replicating the statement with a
string argument would cause a parse failure in the slave).
The solution is to convert arguments to the limit clause to a integer
value and use this converted value when persisting the query to the log.
mysql-test/r/limit.result:
Update test case result.
mysql-test/r/ps.result:
Add test case result for Bug#33851
mysql-test/r/rpl_user_variables.result:
Test case result for replication of prepared statement with
limit clause.
mysql-test/t/limit.test:
Test parameters to limit clause.
mysql-test/t/ps.test:
Add test case for Bug#33851
mysql-test/t/rpl_user_variables.test:
Test replication of a parameter which value is converted.
sql/item.cc:
Convert value to integer if it's a parameter to a limit clause.
sql/item.h:
Flag signal that item is a parameter to a limit clause.
sql/item_func.cc:
Const member functions, object is not mutated.
sql/sql_class.h:
Const member functions, object is not mutated.
sql/sql_yacc.yy:
Flag that item is a parameter to a limit clause.
(show_check.test fails sporadically).
Fix test case for Bug#12183 to make it stable.
mysql-test/r/show_check.result:
Fix result file.
mysql-test/t/show_check.test:
Make test case for Bug#12183 stable.
to reach the desired value.
mysql-test/r/flush_read_lock_kill.result:
Update test case result.
mysql-test/t/flush_read_lock_kill.test:
Wait for the debug synchronization point to be reached.
into quad.:/mnt/raid/alik/MySQL/devel/5.1-rt-merged
client/mysqltest.c:
Auto merged
mysql-test/r/view.result:
Auto merged
sql/ha_ndbcluster.cc:
Auto merged
sql/ha_ndbcluster_binlog.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/log_event.cc:
Auto merged
sql/mysql_priv.h:
Auto merged
sql/mysqld.cc:
Auto merged
sql/set_var.cc:
Auto merged
sql/sql_class.cc:
Auto merged
sql/sql_connect.cc:
Auto merged
sql/sql_parse.cc:
Auto merged
tests/mysql_client_test.c:
Auto merged
mysql-test/suite/rpl_ndb/t/disabled.def:
Manually merged.
mysql-test/t/disabled.def:
Manually merged.
Bug#34678 @@debug variable's incremental mode
The problem is that the per-thread debugging settings stack wasn't
being deallocated before the thread termination, leaking the stack
memory. The chosen solution is to push a new state if the current
is set to the initial settings and pop it (free) once the thread
finishes.
dbug/dbug.c:
Move dbug parser out of _db_set_ to a separate function and
make _db_set_ push a new stack if the corrent one is set to
the initial settings.
dbug/user.r:
Update DBUG_SET description.
mysql-test/t/disabled.def:
Re-enable test case which triggered the leak.
mysys/my_thr_init.c:
Pop a pushed state, nop if stack is empty.
sql/set_var.cc:
Handle incremental debug settings.
mysql-test/r/variables_debug.result:
Add new test case result for Bug#34678
mysql-test/t/variables_debug.test:
Add new test case for Bug#34678
The problem is that the commands COM_STMT_CLOSE, COM_STMT_RESET,
COM_STMT_SEND_LONG_DATA weren't being logged to the general log.
The solution is to log the general log the aforementioned commands.
mysql-test/t/mysql_client_test-master.opt:
Also log to table.
sql/sql_prepare.cc:
Log COM_STMT_CLOSE, COM_STMT_RESET and COM_STMT_SEND_LONG_DATA.
tests/mysql_client_test.c:
Add test case for Bug#28386
The check_global_access() function was made available to InnoDB, but
was not defined in the embedded server library. InnoDB, as a plugin,
is not recompiled when the embedded server is built. This caused a
link failure when compiling applications which use the embedded server.
The fix here is to always define check_global_access() externally; in
the embedded server case, it is defined to just return OK.
Also, don't run the test case for this bug in embedded server.
mysql-test/t/innodb_bug34053.test:
Disable this test on embedded server - it tests privilege
checks which are not in place there.
sql/mysql_priv.h:
Since check_global_access() may be used from some storage engine plugins
(InnoDB, currently), and the plugins are not recompiled for the embedded
server, it must be defined externally even for NO_EMBEDDED_ACCESS_CHECKS.
sql/sql_parse.cc:
Since check_global_access() may be used from some storage engine plugins
(InnoDB, currently), and the plugins are not recompiled for the embedded
server, it must be defined externally even for NO_EMBEDDED_ACCESS_CHECKS.
Disable extra team trees.
Temporary fix for entry 34761 in the bugs DB.
(Patch by Magnus Svensson, 2008-02-22 17:40:14+01:00, msvensson@pilot.mysql.com +1 -0)
mysql-test/mysql-test-run.pl:
Disable extra team trees.
Temporary fix for entry 34761 in the bugs DB.
(Patch by Magnus Svensson, 2008-02-22 17:40:14+01:00, msvensson@pilot.mysql.com +1 -0)
into trift2.:/MySQL/M51/push-5.1
configure.in:
Auto merged
extra/yassl/src/handshake.cpp:
Auto merged
extra/yassl/src/template_instnt.cpp:
Auto merged
extra/yassl/src/yassl_imp.cpp:
Auto merged
mysql-test/mysql-test-run.pl:
Auto merged
sql/ha_ndbcluster_binlog.cc:
Auto merged
sql/handler.cc:
Auto merged
sql/log_event.cc:
Auto merged
sql/mysqld.cc:
Auto merged
sql/sql_class.cc:
Auto merged
storage/ndb/src/common/util/OutputStream.cpp:
Auto merged
storage/ndb/src/kernel/blocks/dbtux/DbtuxScan.cpp:
Auto merged
storage/ndb/tools/waiter.cpp:
Auto merged
mysql-test/r/kill.result:
Update test case result.
mysql-test/t/disabled.def:
Re-enable kill test, bug was closed.
mysql-test/t/kill.test:
Disable concurrent inserts for the kill test.
between 5.0 and 5.1.
The problem was that in the patch for Bug#11986 it was decided
to store original query in UTF8 encoding for the INFORMATION_SCHEMA.
This approach however turned out to be quite difficult to implement
properly. The main problem is to preserve the same IS-output after
dump/restore.
So, the fix is to rollback to the previous functionality, but also
to fix it to support multi-character-set-queries properly. The idea
is to generate INFORMATION_SCHEMA-query from the item-tree after
parsing view declaration. The IS-query should:
- be completely in UTF8;
- not contain character set introducers.
For more information, see WL4052.
mysql-test/include/ddl_i18n.check_views.inc:
Add a test case for Bug#30217.
mysql-test/r/ddl_i18n_koi8r.result:
Update result file.
mysql-test/r/ddl_i18n_utf8.result:
Update result file.
mysql-test/r/information_schema.result:
Update result file.
mysql-test/r/information_schema_db.result:
Update result file.
mysql-test/r/mysqldump.result:
Update result file.
mysql-test/r/show_check.result:
Update result file.
mysql-test/t/ddl_i18n_koi8r.test:
Add a test case for Bug#30217.
mysql-test/t/ddl_i18n_utf8.test:
Add a test case for Bug#30217.
mysql-test/t/mysqldump.test:
Add a test case for Bug#30217.
sql/ha_ndbcluster.cc:
Add a parameter to print().
sql/item.cc:
1. Add a parameter to print().
2. Item_string::print():
- Do not append character set introducer to the text literal
if we're building a query for INFORMATION_SCHEMA;
- Convert text literal to UTF8 if we're building a query
for INFORMATION_SCHEMA.
sql/item.h:
Add a parameter to print().
sql/item_cmpfunc.cc:
Add a parameter to print().
sql/item_cmpfunc.h:
Add a parameter to print().
sql/item_func.cc:
Add a parameter to print().
sql/item_func.h:
Add a parameter to print().
sql/item_geofunc.h:
Add a parameter to print().
sql/item_row.cc:
Add a parameter to print().
sql/item_row.h:
Add a parameter to print().
sql/item_strfunc.cc:
Add a parameter to print().
sql/item_strfunc.h:
Add a parameter to print().
sql/item_subselect.cc:
Add a parameter to print().
sql/item_subselect.h:
Add a parameter to print().
sql/item_sum.cc:
Add a parameter to print().
sql/item_sum.h:
Add a parameter to print().
sql/item_timefunc.cc:
Add a parameter to print().
sql/item_timefunc.h:
Add a parameter to print().
sql/mysql_priv.h:
Add a parameter to print().
sql/sp_head.cc:
Add a parameter to print().
sql/sql_lex.cc:
Add a parameter to print().
sql/sql_lex.h:
Add a parameter to print().
sql/sql_parse.cc:
Add a parameter to print().
sql/sql_select.cc:
Add a parameter to print().
sql/sql_show.cc:
Add a parameter to print().
sql/sql_test.cc:
Add a parameter to print().
sql/sql_view.cc:
Build INFORMATION_SCHEMA query from Item-tree.
sql/sql_yacc.yy:
Build INFORMATION_SCHEMA query from Item-tree.
sql/table.h:
Add a parameter to print().
into buzz.(none):/home/davi/mysql-5.1-runtime
mysql-test/r/ps.result:
Auto merged
mysql-test/t/ps.test:
Auto merged
sql/sql_view.h:
Auto merged
sql/item.h:
Manual merge
sql/sql_prepare.cc:
Manual merge
sql/sql_view.cc:
Manual merge
The problem is that CREATE VIEW statements inside prepared statements
weren't being expanded during the prepare phase, which leads to objects
not being allocated in the appropriate memory arenas.
The solution is to perform the validation of CREATE VIEW statements
during the prepare phase of a prepared statement. The validation
during the prepare phase assures that transformations of the parsed
tree will use the permanent arena of the prepared statement.
mysql-test/r/ps.result:
Add test case result for Bug#32890
mysql-test/t/ps.test:
Add test case for Bug#32890
sql/item.h:
Restore original field name if name is auto generated.
sql/sql_prepare.cc:
Validate and prepare a CREATE VIEW statement for execution.
sql/sql_view.cc:
Move privileges check to it's own function.
sql/sql_view.h:
Export function which check privileges of a CREATE VIEW statement.
into pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-build
mysql-test/suite/ndb_team/t/ndb_autodiscover.test:
Auto merged
sql/sql_parse.cc:
Auto merged
mysql-test/suite/ndb_team/t/ndb_autodiscover3.test:
Manual merge, use already existing way in 5.1
- fix test failures that was already there but now are
more consistent when the 1 second sleep has been removed from
ndb_waiter
mysql-test/t/ndb_autodiscover.test:
Wait until mysqld has reconnected to ndbd after ndbd has been restarted
mysql-test/t/ndb_autodiscover3.test:
Wait until mysqld has reconnected to ndbd after ndbd has been restarted
mysql-test/include/ndb_wait_connected.inc:
Wait until mysqld has reconnected to ndbd after ndbd has been restarted
into quad.:/mnt/raid/alik/MySQL/devel/bug-34337/5.1-rt-bug34337
mysql-test/r/view_grant.result:
Auto merged
mysql-test/t/view_grant.test:
Auto merged
sql/sql_view.cc:
Auto merged
mysql-test/t/view.test:
Manually merged.
a table name.
The problem was that fill_defined_view_parts() did not return
an error if a table is going to be altered. That happened if
the table was already in the table cache. In that case,
open_table() returned non-NULL value (valid TABLE-instance from
the cache).
The fix is to ensure that an error is thrown even if the table
is in the cache.
(This is a backport of the original patch for 5.1)
mysql-test/r/view.result:
Fix result file.
mysql-test/r/view_grant.result:
Fix result file.
mysql-test/t/view.test:
Add a test case for Bug#34337: Server crash when Altering a view
using a table name.
mysql-test/t/view_grant.test:
Fix order-dependency.
sql/sql_view.cc:
Report an error if we're going to work with a table.
mysql-test/r/view.result:
Drop created view.
mysql-test/t/view.test:
Update test result.
sql/sql_cursor.cc:
Fix compilation failure.
tests/mysql_client_test.c:
Manual merge.
into mysql.com:/Users/davi/mysql/mysql-5.1-runtime
mysql-test/r/view.result:
Auto merged
mysql-test/t/view.test:
Auto merged
sql/sql_view.cc:
Auto merged
