Problem:
=======
- Redundant table fails to insert into the table after
instant drop blob column. Instant drop column only marking
the column as hidden and consecutive insert statement tries
to insert NULL value for the dropped BLOB column and returns
the fixed length of the blob type as 65535. This lead to
row size too large error.
Fix:
====
For redundant table, if the non-fixed dropped column can be null
then set the length of the field type as 0.
- InnoDB fails to set the index information or index number
for the spatial index error HA_ERR_NULL_IN_SPATIAL.
row_build_spatial_index_key(): Initialize the tmp_mbr array completely.
check_if_supported_inplace_alter(): Fix the spelling mistake of alter
Sometimes, in MariaDB Server 10.5 but apparently not in later branches,
the test would hang because con1 and con2 would be blocked in
debug_sync (for example, lock_wait_suspend_thread_enter and
row_ins_sec_index_entry_dup_locks_created) and therefore blocking
the purge of transactions from completing.
To prevent an occasional DEBUG_SYNC induced hang in the test, we will
wait for everything to be purged, except the last 2 transactions.
This change should be null-merged to 10.6, because the test is not
failing in 10.6 or later major versions.
Field_blob::store() has special code for GROUP_CONCAT temporary table
(to store blob values in Blob_mem_storage - this prevents them
from being freed/overwritten when a next row is read).
Field_geom and Field_blob_compressed inherit from Field_blob but they
have their own ::store() method without this special Blob_mem_storage
support.
Considering that non-grouping CONCAT() of such fields converts
them to plain BLOB, let's do the same for GROUP_CONCAT. To do it,
Item_func_group_concat::setup will signal that it's creating
a temporary table for GROUP_CONCAT, and Field_blog::make_new_field()
override will create base Field_blob when under group concat.
Hash index is vcol-based wrapper (MDEV-371). row_end is added to
unique index. So when row_end is updated unique hash index must be
recalculated via vcol_update_fields(). DELETE did not update virtual
fields, so DELETE HISTORY was getting wrong hash value.
The fix does update_virtual_fields() on vers_update_end() so in every
case row_end is updated virtual fields are updated as well.
work consistently on replication
Row-based replication does not execute CREATE .. SELECT but instead
CREATE TABLE. CREATE .. SELECT creates implict system fields on
unusual place: in-between declared fields and select fields. That was
done because select_field_pos logic requires select fields go last in
create_list.
So, CREATE .. SELECT on master and CREATE TABLE on slave create system
fields on different positions and replication gets field mismatch.
To fix this we've changed CREATE .. SELECT to create implicit system
fields on usual place in the end and updated select_field_pos for
handling this case.
When calculate_cond_selectivity_for_table() takes into account multi-
column selectivities from range access, it tries to take-into account
that selectivity for some columns may have been already taken into account.
For example, for range access on IDX1 using {kp1, kp2}, the selectivity
of restrictions on "kp2" might have already been taken into account
to some extent.
So, the code tries to "discount" that using rec_per_key[] estimates.
This seems to be wrong and unreliable: the "discounting" may produce a
rselectivity_multiplier number that hints that the overall selectivity
of range access on IDX1 was greater than 1.
Do a conservative fix: if we arrive at conclusion that selectivity of
range access on condition in IDX1 >1.0, clip it down to 1.
row_purge_reset_trx_id(): Reserve large enough offsets for accomodating
the maximum width PRIMARY KEY followed by DB_TRX_ID,DB_ROLL_PTR.
Reviewed by: Thirunarayanan Balathandayuthapani
Don't allow the referencing key column from NULL TO NOT NULL
when
1) Foreign key constraint type is ON UPDATE SET NULL
2) Foreign key constraint type is ON DELETE SET NULL
3) Foreign key constraint type is UPDATE CASCADE and referenced
column declared as NULL
Don't allow the referenced key column from NOT NULL to NULL
when foreign key constraint type is UPDATE CASCADE
and referencing key columns doesn't allow NULL values
get_foreign_key_info(): InnoDB sends the information about
nullability of the foreign key fields and referenced key fields.
fk_check_column_changes(): Enforce the above rules for COPY
algorithm
innobase_check_foreign_drop_col(): Checks whether the dropped
column exists in existing foreign key relation
innobase_check_foreign_low() : Enforce the above rules for
INPLACE algorithm
dict_foreign_t::check_fk_constraint_valid(): This is used
by CREATE TABLE statement to check nullability for foreign
key relation.
Added new test scenario in galera.galera_bf_kill
test to make the issue surface. The tetst scenario has
a multi statement transaction containing a KILL command.
When the KILL is submitted, another transaction is
replicated, which causes BF abort for the KILL command
processing. Handling BF abort rollback while executing
KILL command causes node hanging, in this scenario.
sql_kill() and sql_kill_user() functions have now fix,
to perform implicit commit before starting the KILL command
execution. BEcause of the implicit commit, the KILL execution
will not happen inside transaction context anymore.
Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>
SSL_CTX_set_ciphersuites() sets the TLSv1.3 cipher suites.
SSL_CTX_set_cipher_list() sets the ciphers for TLSv1.2 and below.
The current TLS configuration logic will not perform SSL_CTX_set_cipher_list()
to configure TLSv1.2 ciphers if the call to SSL_CTX_set_ciphersuites() was
successful. The call to SSL_CTX_set_ciphersuites() is successful if any TLSv1.3
cipher suite is passed into `--ssl-cipher`.
This is a potential security vulnerability because users trying to restrict
specific secure ciphers for TLSv1.3 and TLSv1.2, would unknowingly still have
the database support insecure TLSv1.2 ciphers.
For example:
If setting `--ssl_cipher=TLS_AES_128_GCM_SHA256:ECDHE-RSA-AES128-GCM-SHA256`,
the database would still support all possible TLSv1.2 ciphers rather than only
ECDHE-RSA-AES128-GCM-SHA256.
The solution is to execute both SSL_CTX_set_ciphersuites() and
SSL_CTX_set_cipher_list() even if the first call succeeds.
This allows the configuration of exactly which TLSv1.3 and TLSv1.2 ciphers to
support.
Note that there is 1 behavior change with this. When specifying only TLSv1.3
ciphers to `--ssl-cipher`, the database will not support any TLSv1.2 cipher.
However, this does not impose a security risk and considering TLSv1.3 is the
modern protocol, this behavior should be fine.
All TLSv1.3 ciphers are still supported if only TLSv1.2 ciphers are specified
through `--ssl-cipher`.
All new code of the whole pull request, including one or several files that are
either new files or modified ones, are contributed under the BSD-new license. I
am contributing on behalf of my employer Amazon Web Services, Inc.
Add wait_until_ready waits after wsrep_on is set on again to
make sure that node is ready for next step before continuing.
Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>
Stabilize test by reseting DEBUG_SYNC and add wait_condition
for expected table contents.
Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>
Move memory allocations performed during Sys_var_gtid_binlog_state::do_check
to Sys_var_gtid_binlog_state::global_update where they will be freed before
the latter method returns.
The code erroneously called sec_since_epoch() for dates with zeros,
e.g. '2024-00-01'.
Fixi: adding a test that the date does not have zeros before
calling TIME_to_native().
The code in my_strtoll10_mb2 and my_strtoll10_utf32
could hit undefinite behavior by negation of LONGLONG_MIN.
Fixing to avoid this.
Also, fixing my_strtoll10() in the same style.
The previous reduction produced a redundant warning on
CAST(_latin1'-9223372036854775808' AS SIGNED)
The code in my_strntoull_8bit() and my_strntoull_mb2_or_mb4()
could hit undefinite behavior by negating of LONGLONG_MIN.
Fixing the code to avoid this.
Updated tests: cases with bugs or which cannot be run
with the cursor-protocol were excluded with
"--disable_cursor_protocol"/"--enable_cursor_protocol"
Fix for v.10.5
The loose regex for the MDEV-34539 test ended up
matching the opensuse in the path in buildbot.
Adjust to more complete regex including space,
backtick and \n, which becomes much less common
as a path name.
The failing test case validates Seconds_Behind_Master for a delayed
slave, while STOP SLAVE is executed during a delay. The test fixes
initially added to the test (commit b04c857596) added a table lock
to ensure a transaction could not finish before validating the
Seconds_Behind_Master field after SLAVE START, but did not address a
possibility that the transaction could finish before running the
STOP SLAVE command, which invalidates the validations for the rest
of the test case. Specifically, this would result in 1) a timeout in
“Waiting for table metadata lock” on the replica, which expects the
transaction to retry after slave restart and hit a lock conflict on
the locked tables (added in b04c857596), and 2) that
Seconds_Behind_Master should have increased, but did not.
The failure can be reproduced by synchronizing the slave to the master
before the MDEV-32265 echo statement (i.e. before the SLAVE STOP).
This patch fixes the test by adding a mechanism to use DEBUG_SYNC to
synchronize a MASTER_DELAY, rather than continually increase the
duration of the delay each time the test fails on buildbot. This is
to ensure that on slow machines, a delay does not pass before the
test gets a chance to validate results. Additionally, it decreases
overall test time because the test can continue immediately after
validation, thereby bypassing the remainder of a full delay for each
transaction.
A CHAR column cannot be longer than 1024, because
Binlog_type_info_fixed_string::Binlog_type_info_fixed_string
replies on this fact - it cannot store binlog metadata for longer columns.
In case of the filename character set mbmaxlen is equal to 5,
so only 1024/5=204 characters can fit into the 1024 limit.
- In strict mode:
Disallowing creation of a CHAR column with octet length grater than 1024.
- In non-strict mode:
Automatically convert CHAR with octet length>1024 into VARCHAR.
In the bug report MDEV-32817 it occurred that the function
row_mysql_get_table_status() is outputting a fil_space_t*
as if it were a numeric tablespace identifier.
ib_push_warning(): Remove. Let us invoke push_warning_printf() directly.
innodb_decryption_failed(): Report a decryption failure and set the
dict_table_t::file_unreadable flag. This code was being duplicated in
very many places. We return the constant value DB_DECRYPTION_FAILED
in order to avoid code duplication in the callers and to allow tail calls.
innodb_fk_error(): Report a FOREIGN KEY error.
dict_foreign_def_get(), dict_foreign_def_get_fields(): Remove.
This code was being used in dict_create_add_foreign_to_dictionary()
in an apparently uncovered code path. That ib_push_warning() call
would pass the integer i+1 instead of a pointer to NUL terminated
string ("%s"), and therefore the call should have resulted in a crash.
dict_print_info_on_foreign_key_in_create_format(),
innobase_quote_identifier(): Add const qualifiers.
row_mysql_get_table_error(): Replaces row_mysql_get_table_status().
Display no message on DB_CORRUPTION; it should be properly reported at
the SQL layer anyway.
The memory leak happened on second execution of a prepared statement
that runs UPDATE statement with correlated subquery in right hand side of
the SET clause. In this case, invocation of the method
table->stat_records()
could return the zero value that results in going into the 'if' branch
that handles impossible where condition. The issue is that this condition
branch missed saving of leaf tables that has to be performed as first
condition optimization activity. Later the PS statement memory root
is marked as read only on finishing first time execution of the prepared
statement. Next time the same statement is executed it hits the assertion
on attempt to allocate a memory on the PS memory root marked as read only.
This memory allocation takes place by the sequence of the following
invocations:
Prepared_statement::execute
mysql_execute_command
Sql_cmd_dml::execute
Sql_cmd_update::execute_inner
Sql_cmd_update::update_single_table
st_select_lex::save_leaf_tables
List<TABLE_LIST>::push_back
To fix the issue, add the flag SELECT_LEX::leaf_tables_saved to control
whether the method SELECT_LEX::save_leaf_tables() has to be called or
it has been already invoked and no more invocation required.
Similar issue could take place on running the DELETE statement with
the LIMIT clause in PS/SP mode. The reason of memory leak is the same as for
UPDATE case and be fixed in the same way.
MySQL-Connector-Net casts SEQ_IN_INDEX to uint and will
raise an exception if the type is a System.Int64.
As we don't support a huge number of multi-columns in
an index reducing to a uint is sufficient to represent
all values and maintain compatibility with MySQL-Connector-Net.
This matches the type (uint) returned by MySQL-8.3 and 8.0.
Reviewer: Alexander Barkov <bar@mariadb.com>
