mariadb

Tree: 0394cf2030

Author	SHA1	Message	Date
Mats Kindahl	711305e2c5	BUG#37426: RBR breaks for CHAR() UTF-8 fields > 85 chars In order to handle CHAR() fields, 8 bits were reserved for the size of the CHAR field. However, instead of denoting the number of characters in the field, field_length was used which denotes the number of bytes in the field. Since UTF-8 fields can have three bytes per character (and has been extended to have four bytes per character in 6.0), an extra two bits have been encoded in the field metadata work for fields of type Field_string (i.e., CHAR fields). Since the metadata word is filled, the extra bits have been encoded in the upper 4 bits of the real type (the most significant byte of the metadata word) by computing the bitwise xor of the extra two bits. Since the upper 4 bits of the real type always is 1111 for Field_string, this means that for fields of length <256, the encoding is identical to the encoding used in pre-5.1.26 servers, but for lengths of 256 or more, an unrecognized type is formed, causing an old slave (that does not handle lengths of 256 or more) to stop. mysql-test/extra/rpl_tests/rpl_row_basic.test: Adding test cases for replicating UTF-8 fields of lengths of 256 or more (bytes). mysql-test/suite/binlog/r/binlog_base64_flag.result: Result file change. mysql-test/suite/binlog/t/binlog_base64_flag.test: Adding tests to trigger check that an error is generated when replicating from a 5.1.25 server for tables with a CHAR(128) but not when replicating a table with a CHAR(63). Although the bug indicates that the limit is 83, we elected to use CHAR(63) since 6.0 uses 4-byte UTF-8, and anything exceeding 63 would then cause the test to fail when the patch is merged to 6.0. mysql-test/suite/bugs/combinations: Adding combinations file to run all bug reports in all binlog modes (where applicable). mysql-test/suite/bugs/r/rpl_bug37426.result: Result file change. mysql-test/suite/bugs/t/rpl_bug37426.test: Added test for reported bug. mysql-test/suite/rpl/r/rpl_row_basic_2myisam.result: Result file change. mysql-test/suite/rpl/r/rpl_row_basic_3innodb.result: Result file change. sql/field.cc: Encoding an extra two bits in the most significant nibble (4 bits) of the metadata word. Adding assertions to ensure that no attempt is made to use lengths longer than supported. Extending compatible_field_size() function with an extra parameter holding a Relay_log_instace for error reporting. Field_string::compatible_field_size() now reports an error if field size for a CHAR is >255. sql/field.h: Field length is now computed from most significant 4 bits of metadata word, or is equal to the row pack length if there is no metadata. Extending compatible_field_size() function with an extra parameter holding a Relay_log_instace for error reporting. sql/rpl_utility.cc: Adding relay log parameter to compatible_field_size(). Minor refactoring to eliminate duplicate code. sql/slave.cc: Extending rpl_master_has_bug() with a single-argument predicate function and a parameter to the predicate function. The predicate function can be used to test for extra conditions for the bug before writing an error message. sql/slave.h: Extending rpl_master_has_bug() with a single-argument predicate function and a parameter to the predicate function. The predicate function can be used to test for extra conditions for the bug before writing an error message. Also removing gratuitous default argument. sql/sql_insert.cc: Changing calls to rpl_master_has_bug() to adapt to changed signature.	18 years ago
unknown	edb7733c83	BUG#34541: mysqlbinlog prints 'set;' in stm mode after changing autocommit mode Problem: a typo in the code. When autocommit, foreign_key_checks, sql_auto_is_null, or unique_checks changes, it prints "SET", and then a comma-separated list of assignments. However, it does not print the assignment to the @@autocommit variable. Fix: print the @@autocommit variable. mysql-test/r/mysqlbinlog.result: Updated result file since output of mysqlbinlog changed. mysql-test/r/mysqlbinlog2.result: Updated result file since output of mysqlbinlog changed. mysql-test/r/user_var-binlog.result: Updated result file since output of mysqlbinlog changed. mysql-test/suite/binlog/r/binlog_base64_flag.result: Updated result file since output of mysqlbinlog changed. mysql-test/suite/binlog/r/binlog_stm_ctype_ucs.result: Updated result file since output of mysqlbinlog changed. mysql-test/suite/rpl/r/rpl_row_mysqlbinlog.result: Updated result file since output of mysqlbinlog changed. sql/log_event.cc: Just a typo: mysqlbinlog should print the autocommit flag when the value of the flag changes. Also fixed nearby indentation.	18 years ago
unknown	f56d77dadf	BUG#29020 (Event results not correctly replicated to slave in RBR): The bug allow multiple executing transactions working with non-transactional to interfere with each others by interleaving the events of different trans- actions. Bug is fixed by writing non-transactional events to the transaction cache and flushing the cache to the binary log at statement commit. To mimic the behavior of normal statement-based replication, we flush the transaction cache in row- based mode when there is no committed statements in the transaction cache, which means we are committing the first one. This means that it will be written to the binary log as a "mini-transaction" with just the rows for the statement. Note that the changes here does not take effect when building the server with HAVE_TRANSACTIONS set to false, but it is not clear if this was possible before this patch either. For row-based logging, we also have that when AUTOCOMMIT=1, the code now always generates a BEGIN/COMMIT pair for single statements, or BEGIN/ROLLBACK pair in the case of non-transactional changes in a statement that was rolled back. Note that for the case where changes to a non-transactional table causes a rollback due to error, the statement will now be logged with a BEGIN/ROLLBACK pair, even though some changes has been committed to the non-transactional table. mysql-test/extra/rpl_tests/rpl_row_delayed_ins.test: Removing SHOW BINLOG EVENTS causing test to be non-deterministic. mysql-test/r/ctype_cp932_binlog_row.result: Result change. mysql-test/suite/binlog/r/binlog_base64_flag.result: Result change. mysql-test/suite/binlog/r/binlog_multi_engine.result: Result file change. mysql-test/suite/binlog/r/binlog_row_binlog.result: Result file change. mysql-test/suite/binlog/r/binlog_row_ctype_ucs.result: Result file change. mysql-test/suite/binlog/r/binlog_row_insert_select.result: Result file change. mysql-test/suite/binlog/r/binlog_row_mix_innodb_myisam.result: Result file change. mysql-test/suite/binlog/r/binlog_stm_binlog.result: Result file change. mysql-test/suite/binlog/t/binlog_base64_flag.test: Removing table that will be used in test to prevent failing if preceeding tests forgot to drop the table. mysql-test/suite/rpl/r/rpl_rbr_to_sbr.result: Result file change. mysql-test/suite/rpl/r/rpl_row_basic_11bugs.result: Result file change. mysql-test/suite/rpl/r/rpl_row_create_table.result: Result file change. mysql-test/suite/rpl/r/rpl_row_delayed_ins.result: Result file change. mysql-test/suite/rpl/r/rpl_row_flsh_tbls.result: Result file change. mysql-test/suite/rpl/r/rpl_row_inexist_tbl.result: Result file change. mysql-test/suite/rpl/r/rpl_row_log.result: Result file change. mysql-test/suite/rpl/r/rpl_row_log_innodb.result: Result file change. mysql-test/suite/rpl/r/rpl_row_until.result: Result file change. mysql-test/suite/rpl/r/rpl_slave_skip.result: Result file change. mysql-test/suite/rpl/r/rpl_switch_stm_row_mixed.result: Result file change. mysql-test/suite/rpl/r/rpl_truncate_2myisam.result: Result file change. mysql-test/suite/rpl/t/rpl_row_create_table.test: Binlog position change. mysql-test/suite/rpl/t/rpl_row_flsh_tbls.test: Binlog position change. mysql-test/suite/rpl/t/rpl_row_mysqlbinlog.test: Binlog position change. Added stop position to mysqlbinlog argments to prevent extreneous output. mysql-test/suite/rpl/t/rpl_row_until.test: Binlog position change. mysql-test/suite/rpl/t/rpl_slave_skip.test: Binlog position change. mysql-test/suite/rpl/t/rpl_switch_stm_row_mixed.test: Removing extreneous SHOW BINLOG EVENTS causing test to be non-deterministic. mysql-test/suite/rpl_ndb/r/rpl_ndb_log.result: Result change. sql/log.cc: Adding variable at_least_one_stmt to denote that there is at least one statement committed to the transaction cache (but there might be more). Removing duplicate checks from binlog_end_trans(). The transaction cache should always be committed or rolled back when this function is called. Correcting conditions for binlog_rollback() and binlog_commit() and removing the previous "invisible commit" in favor of always using explicit commits in the binary log. sql/log_event.cc: Marking table map event to be cached. Removing Muted_query_log_event from code. sql/log_event.h: Removing unused class Muted_query_log_event. sql/sql_insert.cc: Adding missing call to ha_autocommit_or_rollback() for delayed thread. Marking CREATE-SELECT statements as transactional, since they don't need to be logged.	18 years ago
unknown	875ad6d8b8	BUG#31168: @@hostname does not replicate Problem: in mixed and statement mode, a query that refers to a system variable will use the slave's value when replayed on slave. So if the value of a system variable is inserted into a table, the slave will differ from the master. Fix: mark statements that refer to a system variable as "unsafe", meaning they will be replicated by row in mixed mode and produce a warning in statement mode. There are some exceptions: some variables are actually replicated. Those should not be marked as unsafe. BUG#34732: mysqlbinlog does not print default values for auto_increment variables Problem: mysqlbinlog does not print default values for some variables, including auto_increment_increment and others. So if a client executing the output of mysqlbinlog has different default values, replication will be wrong. Fix: Always print default values for all variables that are replicated. I need to fix the two bugs at the same time, because the test cases would fail if I only fixed one of them. include/m_ctype.h: Added definition of ILLEGAL_CHARSET_INFO_NUMBER. We just need a symbol for a number that will never be used by any charset. ~0U should be safe since charset numbers are sequential, starting from 0. mysql-test/include/commit.inc: Upated test to avoid making statements unsafe. mysql-test/r/commit_1innodb.result: Updated test needs updated result file. mysql-test/r/mysqlbinlog.result: Updated result file. mysql-test/r/mysqlbinlog2.result: Updated result file. mysql-test/r/user_var-binlog.result: Updated result file. mysql-test/suite/binlog/r/binlog_base64_flag.result: Updated result file. mysql-test/suite/binlog/r/binlog_stm_ctype_ucs.result: Updated result file. mysql-test/suite/binlog/r/binlog_unsafe.result: Modified test file needs modified result file. mysql-test/suite/binlog/t/binlog_base64_flag.test: Need to filter out pseudo_thread_id from result since it is nondeterministic. mysql-test/suite/binlog/t/binlog_unsafe.test: Add tests that using variables is unsafe. The 'CREATE VIEW' tests didn't make sense, so I removed them. SHOW WARNINGS is not necessary either, because we get warnings for each statement in the result file. mysql-test/suite/rpl/r/rpl_row_mysqlbinlog.result: Updated result file. mysql-test/suite/rpl/r/rpl_skip_error.result: Updated result file. mysql-test/suite/rpl/t/rpl_skip_error.test: The test used @@server_id, which is not safe to replicate, so it would have given a warning. The way it used @@server_id was hackish (issue a query on master that removes rows only on master), so I replaced it by a more robust way to do the same thing (connect to slave and insert the rows only there). Also clarified what the test case does. mysql-test/t/mysqlbinlog2.test: Use --short-form instead of manually filtering out nondeterministic stuff from mysqlbinlog (because we added the nondeterministic @@pseudo_thread_id to the output). sql/item_func.cc: Added method of Item_func_get_system_var that indicates whether the given system variable will be written to the binlog or not. sql/item_func.h: Added method of Item_func_get_system_var that indicates whether the given system variable will be written to the binlog or not. sql/log_event.cc: - auto_increment_offset was not written to the binlog if auto_increment_increment=1 - mysqlbinlog did not output default values for some variables (BUG#34732). In st_print_event_info, we remember for each variable whether it has been printed or not. This is achieved in different ways for different variables: - For auto_increment_*, lc_time_names, charset_database_number, we set the default values in st_print_event_info to something illegal, so that it will look like they have changed the first time they are seen. - For charset, sql_mode, pseudo_thread_id, we add a flag to st_print_event_info which indicates whether the variable has been printed. - Since pseudo_thread_id is now printed more often, and its value is not guaranteed to be constant across different runs of the same test script, I replaced it by a constant if --short-form is used. - Moved st_print_event_info constructor from log_event.h to log_event.cc, since it now depends on ILLEGAL_CHARSET_NUMBER, which is defined in m_ctype.h, which is better to include from a .cc file than from a header file. sql/log_event.h: Added fields to st_print_event_info that indicate whether some of the variables have been written or not. Since the initialization of charset_database_number now depends on ILLEGAL_CHARSET_INFO_NUMBER, which is defined in a header file, which we'd better not include from this header file -- I moved the constructor from here to log_event.cc. sql/set_var.cc: System variables now have a flag binlog_status, which indicates if they are written to the binlog. If nothing is specified, all variables are marked as not written to the binlog (NOT_IN_BINLOG) when created. In this file, the variables that are written to the binlog are marked with SESSION_VARIABLE_IN_BINLOG. sql/set_var.h: Added flag binlog_status to class sys_var. Added a getter and a constructor parameter that sets it. Since I had to change sys_var_thd_enum constructor anyways, I simplified it to use default values of arguments instead of three copies of the constructor. sql/sql_yacc.yy: Mark statements that refer to a system variable as "unsafe", meaning they will be replicated by row in mixed mode. Added comment to explain strange piece of code just above. mysql-test/include/diff_tables.inc: New auxiliary test file that tests whether two tables (possibly one on master and one on slave) differ. mysql-test/suite/rpl/r/rpl_variables.result: New test case needs new result file. mysql-test/suite/rpl/r/rpl_variables_stm.result: New test file needs new result file. mysql-test/suite/rpl/t/rpl_variables.test: Test that INSERT of @@variables is replicated correctly (by switching to row-based mode). mysql-test/suite/rpl/t/rpl_variables_stm.test: Test that replication of @@variables which are replicated explicitly works as expected in statement mode (without giving warnings).	18 years ago
unknown	5db7ee3ee9	BUG#33247: mysqlbinlog does not clean up after itself on abnormal termination Problem: mysqlbinlog does not free memory if an error happens. Fix: binlog-processing functions do not call exit() anymore. Instead, they print an error and return an error code. Error codes are propagated all the way back to main, and all allocated memory is freed on the way. client/mysqlbinlog.cc: - New error handling policy: functions processing binlogs don't just exit() anymore. Instead, they print a message and return an error status. - New policy for the global `mysql' and `glob_description_event': these are not passed as parameters anymore. The global pointer is used instead. - More error situations are detected and reported. - Better error messages: the program never terminates with exit status 1 without explanation any more. Fixed spelling errors. Use consistent format of messages (a single line beginning with "ERROR: " or "WARNING: " and ending with "." is printed to stderr.) - New memory handling: memory is always freed on program termination. - Better comments: more functions are explained, doxygen is used, and more precise formulations in some existing comments. mysql-test/suite/binlog/r/binlog_base64_flag.result: Result file updated since output format of mysqlbinlog changed while the test was disabled. mysql-test/suite/binlog/t/binlog_killed.test: Mysqlbinlog now works as described when the binlog is open. Hence, the --force-if-open flag must be passed mysql-test/suite/binlog/t/binlog_killed_simulate.test: Mysqlbinlog now works as described when the binlog is open. Hence, the --force-if-open flag must be passed mysql-test/suite/binlog/t/disabled.def: Now that mysqlbinlog cleans up after itself on abnormal termination, we can enable this test again.	18 years ago
unknown	8d37a30eac	BUG#32407: Impossible to do point-in-time recovery from older binlog Problem: it is unsafe to read base64-printed events without first reading the Format_description_log_event (FD). Currently, mysqlbinlog cannot print the FD. As a side effect, another bug has also been fixed: When mysqlbinlog --start-position=X was specified, no ROLLBACK was printed. I changed this, so that ROLLBACK is always printed. This patch does several things: - Format_description_log_event (FD) now print themselves in base64 format. - mysqlbinlog is now able to print FD events. It has three modes: --base64-output=auto Print row events in base64 output, and print FD event. The FD event is printed even if it is outside the range specified with --start-position, because it would not be safe to read row events otherwise. This is the default. --base64-output=always Like --base64-output=auto, but also print base64 output for query events. This is like the old --base64-output flag, which is also a shorthand for --base64-output=always --base64-output=never Never print base64 output, generate error if row events occur in binlog. This is useful to suppress the FD event in binlogs known not to contain row events (e.g., because BINLOG statement is unsafe, requires root privileges, is not SQL, etc) - the BINLOG statement now handles FD events correctly, by setting the thread's rli's relay log's description_event_for_exec to the loaded event. In fact, executing a BINLOG statement is almost the same as reading an event from a relay log. Before my patch, the code for this was separated (exec_relay_log_event in slave.cc executes events from the relay log, mysql_client_binlog_statement in sql_binlog.cc executes BINLOG statements). I needed to augment mysql_client_binlog_statement to do parts of what exec_relay_log_event does. Hence, I did a small refactoring and moved parts of exec_relay_log_event to a new function, which I named apply_event_and_update_pos. apply_event_and_update_pos is called both from exec_relay_log_event and from mysql_client_binlog_statement. - When a non-FD event is executed in a BINLOG statement, without previously executing a FD event in a BINLOG statement, it generates an error, because that's unsafe. I took a new error code for that: ER_NO_FORMAT_DESCRIPTION_EVENT_BEFORE_BINLOG_STATEMENTS. In order to get a decent error message containing the name of the event, I added the class method char* Log_event::get_type_str(Log_event_type type), which returns a string name for the given Log_event_type. This is just like the existing char* Log_event::get_type_str(), except it is a class method that takes the log event type as parameter. I also added PRE_GA__ROWS_LOG_EVENT to Log_event::get_type_str(), so that names of old rows event are properly printed. - When reading an event, I added a check that the event type is known by the current Format_description_log_event. Without this, it may crash on bad input (and I was struck by this several times). - I patched the following test cases, which all contain BINLOG statements for row events which must be preceded by BINLOG statements for FD events: - rpl_bug31076 While I was here, I fixed some small things in log_event.cc: - replaced hard-coded 4 by EVENT_TYPE_OFFSET in 3 places - replaced return by DBUG_VOID_RETURN in one place - The name of the logfile can be '-' to indicate stdin. Before my patch, the code just checked if the first character is '-'; now it does a full strcmp(). Probably, all arguments that begin with a - are already handled somewhere else as flags, but I still think it is better that the code reflects what it is supposed to do, with as little dependencies as possible on other parts of the code. If we one day implement that all command line arguments after -- are files (as most unix tools do), then we need this. I also fixed the following in slave.cc: - next_event() was declared twice, and queue_event was not static but should be static (not used outside the file). client/client_priv.h: Declared the new option for base64 output. client/mysqlbinlog.cc: - Change from using the two-state command line option "default/--base64-output" to the three-state "--base64-output=[never\|auto\|always]" - Print the FD event even if it is outside the --start-position range. - Stop if a row event is about to be printed without a preceding FD event. - Minor fixes: changed 4 to EVENT_TYPE_OFFSET in some places * Added comments * before, "mysqlbinlog -xyz" read from stdin; now it does not (only "mysqlbinlog -" reads stdin). mysql-test/r/mysqlbinlog2.result: Updated result file: mysqlbinlog now prints ROLLBACK always. mysql-test/suite/binlog/t/disabled.def: The test must be disabled since it reveals another bug: see BUG#33247. mysql-test/suite/rpl/r/rpl_bug31076.result: Updated result file mysql-test/suite/rpl/r/rpl_row_mysqlbinlog.result: Updated result file mysql-test/suite/rpl/t/rpl_bug31076.test: Had to add explicit Format_description_log_event before other BINLOG statements mysql-test/t/mysqlbinlog2.test: we must suppress base64 output in result file because it contains a timestamp sql/log_event.cc: - Made FD events able to print themselves - Added check that the current FD event knows about the event type, when an event is about to be read. (Hint to reviewers: I had to re-indent a big block because of this; use diff -b) * To get a decent error message, I also added a class method const char* Log_event::get_type_str(Log_event_type) which converts number to event type string without having a Log_event object. * Made Log_event::get_type_str aware of PRE_GA__ROWS_LOG_EVENT. - Minor fixes: Changed return to DBUG_VOID_RETURN sql/log_event.h: - Declared enum to describe the three base64_output modes - Use the enum instead of a flag - Declare the new class method get_type_str (see log_event.cc) sql/share/errmsg.txt: Added error msg. sql/slave.cc: - Factored out part of exec_relay_log_event to the new function apply_event_and_update_pos, because that code is needed when executing BINLOG statements. (this is be functionally equivalent to the previous code, except: (1) skipping events is now optional, controlled by a parameter to the new function (2) the return value of exec_relay_log_event has changed; see next item). - Changed returned error value to always be 1. Before, it would return the error value from apply_log_event, which was unnecessary. This change is safe because the exact return value of exec_relay_log_event is never examined; it is only tested to be ==0 or !=0. - Added comments describing exec_relay_log_event and apply_event_and_update_pos. - Minor fixes: * Removed duplicate declaration of next_event, made queue_event static. * Added doxygen code to include this file. sql/slave.h: Declared the new apply_event_and_update_pos sql/sql_binlog.cc: - Made mysql_binlog_statement set the current FD event when the given event is an FD event. This entails using the new function apply_event_and_update_pos from slave.cc instead of just calling the ev->apply method. - Made mysql_binlog_statement fail if the first BINLOG statement is not an FD event. mysql-test/suite/binlog/r/binlog_base64_flag.result: New test file needs new result file mysql-test/suite/binlog/t/binlog_base64_flag.test: Added test case to verify that: - my patch fixes the bug - the new --base64-output flag works as expected - base64 events not preceded by an FD event give an error - an event of a type not known by the current FD event fails cleanly. mysql-test/suite/binlog/std_data/binlog-bug32407.000001: BitKeeper file /home/sven/bk/b32407-5.1-new-rpl-mysqlbinlog_base64/mysql-test/suite/binlog/std_data/binlog-bug32407.000001	18 years ago

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