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table | Assertion `part_share->auto_inc_initialized || !can_use_for_auto_inc_init()' failed.
The bug is caused by a similar mechanism as MDEV-21027.
The function, check_insert_or_replace_autoincrement, failed to open
all the partitions on INSERT SELECT statements and it results in the
assertion error.
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!can_use_for_auto_inc_init()' failed in ha_partition::set_auto_increment_if_higher
ha_partition::set_auto_increment_if_higher expects
part_share->auto_inc_initialized is true or can_use_for_auto_inc_init()
is false (but as the comment of this method says, it returns false
only if we use Spider engine with DROP TABLE or ALTER TABLE query).
However, part_share->auto_inc_initialized becomes true only after all
partitions are opened (since 6dce6aecebe6ef78a14cb5c5c5daa8a355551e40).
Therefore, I added a conditional expression in order to read all
partitions when we execute REPLACE on a table that has an
AUTO_INCREMENT column.
Reviewed by: Nayuta Yanagisawa
Reviewed by: Alexey Botchkov
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assertion: id != 0 on ALTER ... REBUILD PARTITION
During rebuild of partition, the partitioning engine calls
alter_close_table(), which does not unlock and close some table
instances of the target table.
Then, the engine fails to rename partitions because there are table
instances that are still locked.
Closing all the table instance of the target table fixes the bug.
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assertion: id != 0 on ALTER ... REBUILD PARTITION
During rebuild of partition, the partitioning engine calls
alter_close_table(), which does not unlock and close some table
instances of the target table.
Then, the engine fails to rename partitions because there are table
instances that are still locked.
Closing all the table instance of the target table fixes the bug.
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The server behaves differently on the DATA/INDEX DIRECTORY clause
under valgrind because symlink is disabled under valgrind.
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to default directory
The partitioning engine does not support the table-level DATA/INDEX
DIRECTORY specification.
If one create a non-partitioned table with the DATA/INDEX DIRECTORY
option and then performs ALTER TABLE ... PARTITION BY on it, the
DATA/INDEX DIRECTORY specification of the old schema is ignored.
The behavior might be a bit surprising for users because the value
of a usual table option applies to all the partitions. Thus, we raise
a warning on such ALTER TABLE ... PARTITION BY.
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- InnoDB purge waits at resume_FTS() while shutting down.
This happens after altering the FTS innodb partition table.
stop_FTS() has been called for each partition, but it calls
resume_FTS() only once and it leads to hang during shutdown.
This issue was introduced by
commit 1bd681c8b3c5213ce1f7976940a7dc38b48a0d39(MDEV-25506).
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When a partition with engine-defined partition options is added by
ALTER, it shows the correct definition in SHOW CREATE, but the actual
values get inherited from the previous partition.
The cause of the bug is that the server did not parse the options
associated with the newly added partition.
In the case of ALTER, the complete part_info, which represents the
partition structure after ALTER, is built by prep_alter_part_table().
So, we need to parse engine-defined partition options after the call
of the function.
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The InnoDB DATA DIRECTORY attribute is not implemented via
symbolic links but something similar, *.isl files that contain
the names of data files.
InnoDB failed to ignore the DATA DIRECTORY attribute even though
the server was started with --skip-symbolic-links.
Native ALTER TABLE in InnoDB will retain the DATA DIRECTORY attribute
of the table, no matter if the table will be rebuilt or not.
Generic ALTER TABLE (with ALGORITHM=COPY) as well as TRUNCATE TABLE
will discard the DATA DIRECTORY attribute.
All tests have been run with and without the ./mtr option
--mysqld=--skip-symbolic-links
and some tests that use the InnoDB DATA DIRECTORY attribute
have been adjusted for this.
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REORGANIZE
This also fixes some issues with
MDEV-23730 s3.replication_partition 'innodb,mix' segv
The problem was that mysql_change_partitions() closes all handler files
in case of error, which was not properly reflected in
fast_alter_partition_table(). This caused handle_alter_part_error() to
try to close already closed tables, which caused the crash.
Fixed fast_alter_partion_table() to reflect when tables are opened.
I also fixed that ha_partition::change_partitions() resets m_new_file in
case of errors.
Either of the above changes fixes the issue, but both are needed to ensure
that the code works as expected.
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Make it possible to specify engine-defined attributes on partitions
as well as tables.
If an engine-defined attribute is only specified at the table level,
it applies to all the partitions in the table.
This is a backward-compatible behavior.
If the same attribute is specified both at the table level and the
partition level, the per-partition one takes precedence.
So, we can consider per-table attributes as default values.
One cannot specify engine-defined attributes on subpartitions.
Implementation details:
* We store per-partition attributes in the partition_element class
because we already have the part_comment field, which is for
per-partition comments.
* In the case of ALTER TABLE statements, the partition_elements in
table->part_info is set up by mysql_unpack_partition().
So, we parse per-partition attributes after the call of the function.
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Syntax for CONVERT TABLE
ALTER TABLE tbl_name CONVERT TABLE tbl_name TO PARTITION partition_name partition_spec
Examples:
ALTER TABLE t1 CONVERT TABLE tp2 TO PARTITION p2 VALUES LESS THAN MAX_VALUE();
New ALTER_PARTITION_CONVERT_IN command for
fast_alter_partition_table() is done in alter_partition_convert_in()
function which basically does ha_rename_table().
Table structure and data check is basically the same as in EXCHANGE
PARTITION command. And these are done by
compare_table_with_partition() and check_table_data().
Atomic DDL is done by the scheme from MDEV-22166 (see the
corresponding commit message). The only differnce is that it also has
to drop source table frm and that is done by WFRM_DROP_CONVERTED_FROM.
Initial patch was done by Dmitry Shulga <dmitry.shulga@mariadb.com>
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Syntax for CONVERT keyword
ALTER TABLE tbl_name
[alter_option [, alter_option] ...] |
[partition_options]
partition_option: {
...
| CONVERT PARTITION partition_name TO TABLE tbl_name
}
Examples:
ALTER TABLE t1 CONVERT PARTITION p2 TO TABLE tp2;
New ALTER_PARTITION_CONVERT_OUT command for
fast_alter_partition_table() is done in alter_partition_convert_out()
function which basically does ha_rename_table().
Partition to extract is marked with the same flag as dropped
partition: PART_TO_BE_DROPPED. Note that we cannot have multiple
partitioning commands in one ALTER.
For DDL logging basically the principle is the same as for other
fast_alter_partition_table() commands. The only difference is that it
integrates late Atomic DDL functions and introduces additional phase
of WFRM_BACKUP_ORIGINAL. That is required for binlog consistency
because otherwise we could not revert back after WFRM_INSTALL_SHADOW
is done. And before DDL log is complete if we crash or fail the
altered table will be already new but binlog will miss that ALTER
command. Note that this is different from all other atomic DDL in that
it rolls back until the ddl_log_complete() is done even if everything
was done fully before the crash.
Test cases added to:
parts.alter_table \
parts.partition_debug \
versioning.partition \
atomic.alter_partition
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Dead code cleanup:
part_info->num_parts usage was wrong and working incorrectly in
mysql_drop_partitions() because num_parts is already updated in
prep_alter_part_table(). We don't have to update part_info->partitions
because part_info is destroyed at alter_partition_lock_handling().
Cleanups:
- DBUG_EVALUATE_IF() macro replaced by shorter form DBUG_IF();
- Typo in ER_KEY_COLUMN_DOES_NOT_EXITS.
Refactorings:
- Splitted write_log_replace_delete_frm() into write_log_delete_frm()
and write_log_replace_frm();
- partition_info via DDL_LOG_STATE;
- set_part_info_exec_log_entry() removed.
DBUG_EVALUATE removed
DBUG_EVALUTATE was only added for consistency together with
DBUG_EVALUATE_IF. It is not used anywhere in the code.
DBUG_SUICIDE() fix on release build
On release DBUG_SUICIDE() was statement. It was wrong as
DBUG_SUICIDE() is used in expression context.
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