while according to Storage Engine API column names should be compared
case insensitively. This can cause FRM and InnoDB data dictionary to
go out of sync.
Don't let network errors from mysql_close() leak into THD.
* remove incorrect upstream fix
** table->in_use can be NULL, must use ha_thd()
** clear_error() may remove earlier errors, don't use it
* fix the bug properly in federated and federatedx
fix innodb auto-increment handling
three bugs:
1. innobase_next_autoinc treated the case of current<offset incorrectly
2. ha_innobase::get_auto_increment didn't recalculate current when increment changed
3. ha_innobase::get_auto_increment didn't pass offset down to innobase_next_autoinc
Item_func_coalesce::fix_length_and_dec() calls
Item_func::count_string_result_length()) which called agg_arg_charsets()
with wrong flags, so the collation derivation of the COALESCE result was
not properly set to DERIVATION_COERCIBLE. It erroneously stayed
DERIVATION_NUMERIC. So GREATEST() misinterpreted the argument as
a number rather that a string and did not calculate its own length properly.
mysqldump --routine fails to dump databases containing backslash ("\")
character. This happened because escaped database name was being used as an
identifier while changing current database. Such identifers are not supposed
to be escaped, they must be properly quoted instead.
Analysis: debug only assertion I_S function (IS is XtraDB feature) is calling
buf_block_get_frame on any page it reads, which debug-asserts that the page is
buffer-fixed, which is not the case in I_S query.
Fixed by holding the buffer page mutex while the fields are read directly.
Problem:
========
1) Drop table queries are re-generated by server
before writing the events(queries) into binlog
for various reasons. If table name/db name contains
a non regular characters (like latin characters),
the generated query is wrong. Hence it breaks the
replication.
2) In the edge case, when table name/db name contains
64 characters, server is throwing an assert
assert(M_TBLLEN < 128)
3) In the edge case, when db name contains 64 latin
characters, binlog content is interpreted badly
which is leading replication failure.
Analysis & Fix :
================
1) Parser reads the table name from the query and converts
it to standard charset(utf8) and stores it in table_name variable.
When drop table query is regenerated with the same table_name
variable, it should be converted back to the original charset
from standard charset(utf8).
2) Latin character takes two bytes for each character. Limit
of the identifier is 64. SYSTEM_CHARSET_MBMAXLEN is set to '3'.
So there is a possiblity that tablename/dbname contains 3 * 64.
Hence assert is changed to
(M_TBLLEN <= NAME_CHAR_LEN*SYSTEM_CHARSET_MBMAXLEN)
3) db_len in the binlog event header is taking 1 byte.
db_len is ranged from 0 to 192 bytes (3 * 64).
While reading the db_len from the event, server
is casting to uint instead of uchar which is leading
to bad db_len. This problem is fixed by changing the
cast type to uchar.
This includes fixing all utilities to not have any memory leaks,
as safemalloc warnings stopped tests from passing on MacOSX.
- Ensure that all clients takes character-set-dir, as the
libmysqlclient library will use it.
- mysql-test-run now passes character-set-dir to all external clients.
- Changed dynstr_free() so that it can be called twice (made freeing code easier)
- Changed rpl_global_gtid_slave_state to be allocated dynamicly as it
includes a mutex that needs to be initizlied/destroyed before my_end() is called.
- Removed rpl_slave_state::init() and rpl_slave_stage::deinit() as
their job are better handling by constructor and delete.
- Print alias instead of table_name in check_duplicate_key as
table_name may have been converted to lower case.
Other things:
- Fixed a case in time_to_datetime_with_warn() where we where
using && instead of & in tests
- Better error from check_slave_param
- Better error message from TokuDB if it can't be compiled.
- Marked rpl_mixed_drop_create_temp_table and
rpl_stm_drop_create_temp_table as big tests to stop timeout
failures on power8
- Added sync_slave_with_master to semisync_future-7591 to
ensure that slave is up to date with master before calling
rpl_end.
- Disabled compiler warnings from connect and mroonga and on
MacOSX.
Mroonga:
- Fixed bug when testing if file is a normal file that can be deleted
- Marked a lot of date and datetime test to not run on macosx.
This is because mktime() can't handle negative years and this
restricts mroonga so that it can only store dates after the year 1900.
- Added some extra command to rpl_start_stop to ensure that the
IO thread has connected to the master before we shut down the server.
- if signal returns signalhandler_t, use this with the alarm code
- Added missing tests to sys_vars
- Fixed some possible overflow bugs in tabxml.cpp
Problem & Analysis: If DML invokes a trigger or a
stored function that inserts into an AUTO_INCREMENT column,
that DML has to be marked as 'unsafe' statement. If the
tables are locked in the transaction prior to DML statement
(using LOCK TABLES), then the same statement is not marked as
'unsafe' statement. The logic of checking whether unsafeness
is protected with if (!thd->locked_tables_mode). Hence if
we lock the tables prior to DML statement, it is *not* entering
into this if condition. Hence the statement is not marked
as unsafe statement.
Fix: Irrespective of locked_tables_mode value, the unsafeness
check should be done. Now with this patch, the code is moved
out to 'decide_logging_format()' function where all these checks
are happening and also with out 'if(!thd->locked_tables_mode)'.
Along with the specified test case in the bug scenario
(BINLOG_STMT_UNSAFE_AUTOINC_COLUMNS), we also identified that
other cases BINLOG_STMT_UNSAFE_AUTOINC_NOT_FIRST,
BINLOG_STMT_UNSAFE_WRITE_AUTOINC_SELECT, BINLOG_STMT_UNSAFE_INSERT_TWO_KEYS
are also protected with thd->locked_tables_mode which is not right. All
of those checks also moved to 'decide_logging_format()' function.
RENAME TABLE code tries to update EITS statistics. It hung, because
it used an index on (db_name,table_name) to find the table, and attempted
to update these values at the same time. The fix is do what SQL UPDATE
statement does when updating index that it's used for scanning:
- First, buffer the rowids of rows to be updated,
- then make the second pass to actually update the rows
Also fixed the call to rename_table_in_stat_tables() in sql_rename.cc
to pass the correct new database (before, it passed old db_name so cross-
database renames were not handled correctly).
Variant #2, with review feedback addressed.
rpl/rpl_mdev382 ; Wrong replace in show_binlog_events2.inc
binlog/database ; Different error on Solaris if file exists
mroonga/repair_table_no_index_file ; Different system error on Solaris
partition_not_blackhole ; Different error on Solaris
partition_myisam ; Different error on Solaris
Some other failures in mroonga was because have_32bit.inc didn't correctly
detect 64 bits on Solaris. Fixed using DEFAULT_MACHINE instead of MACHINE_TYPE
for Sys_version_compile_machine.
make it possible to change feedback plugin wait intervals
* only in debug builds
* and force the feedback report to be ignored
update the test to use this feature
Problem is that FLUSH TABLES WITH READ LOCK first blocks threads from
starting new commits, then waits for running commits to complete. But
in-order parallel replication needs commits to happen in a particular
order, so this can easily deadlock.
To fix this problem, this patch introduces a way to temporarily pause
the parallel replication worker threads. Before starting FTWRL, we let
all worker threads complete in-progress transactions, and then
wait. Then we proceed to take the global read lock. Once the lock is
obtained, we unpause the worker threads. Now commits are blocked from
starting by the global read lock, so the deadlock will no longer occur.
DOING BAD DDL IN PREPARED STATEMENT
Analysis
========
A repeat execution of the prepared statement 'ALTER TABLE v1
CHECK PARTITION' where v1 is a view leads to server exit.
ALTER TABLE ... CHECK PARTITION is not applicable for views
and check for the same check is missing. This leads to
further execution and creation of derived table for the view
(Allocated under temp_table mem_root). Any reference to open
view or related pointers from second execution leads to
server exit as the same was freed at previous execution closure.
Fix:
======
Added check for view in mysql_admin_table() on PARTITION
operation. This will prevent mysql_admin_table() from
going ahead and creating temp table and related issues.
Changed message on admin table view operation error to
be more appropriate.
Patch from Daniel Black:
- Change the charset of mysql.column_stats.{min_value, max_value} from
utf8_bin varchar to varbinary
- Adjust the code that saves/reads the data accordingly.
- Also provide upgrade statement in mysql_system_tables_fix.sql
MDEV-8938 Server Crash on Update with joins
Make unique table check after setup_fields of update because unique table can materialize table and we do not need field resolving after materialization.
Make unique table check after setup_fields of update because unique table can materialize table and we do not need field resolving after materialization.
The regression is caused by change bind-address server parameter
in MDEV-8083, so now server listens on IPv4 only by default.
The problem however is that on Windows, connection to server on localhost
appears to be much faster, if server listens on IPv6/dual stack.
mysql_real_connect() would try to connect to IPv6 loopback first,
and if this fails, the failing connect() call takes several seconds.
To fix, use bind-address=* on Windows, and 127.0.0.1 elsewhere
find_item_in_list() now recognize view fields like a fields even if they rever to an expression.
The problem of schema name do not taken into account for field with it and
derived table fixed.
Duplicating code removed
A few tests assumes that the CYCLE timer is always available,
which is not true on some platforms (e.g. ARM).
Fixing the tests not to reply on the CYCLE availability.
===========
When doing an upgrade, you execute mysql_upgrade. If
mysql_upgrade fails to connect or it connects with a user
without the proper privileges, it will return the error:
FATAL ERROR: Upgrade failed
which is not very informative.
ANALYSIS
========
In main() and check_version_match(), the condition for
errors are clubbed together and throw the same error msg.
The functions need to be splitted up and the corresponding
error msgs have to be displayed.
FIX
===
Splitted the functions and added the specific error msg.
