> For the complete documentation index, see [llms.txt](https://mariadb.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mariadb.com/docs/release-notes/community-server/old-releases/10.9/10.9.8.md).

# MariaDB 10.9.8 Release Notes

[Download](https://mariadb.com/downloads) | [Release Notes](/docs/release-notes/community-server/old-releases/10.9/10.9.8.md) | [Changelog](/docs/release-notes/community-server/changelogs/10.9/10.9.8.md) | [Overview of 10.9](/docs/release-notes/community-server/old-releases/10.9/what-is-mariadb-109.md)

[*Alternate download from mariadb.org*](https://downloads.mariadb.org/mariadb/10.9.8/)

**Release date:** 14 Aug 2023

[MariaDB 10.9](/docs/release-notes/community-server/old-releases/10.9/what-is-mariadb-109.md) is a previous short-term stable series of MariaDB, [maintained until](https://mariadb.org/about/#maintenance-policy) August 2023. It is an evolution of [MariaDB 10.8](/docs/release-notes/community-server/old-releases/10.8/what-is-mariadb-108.md) with several entirely new features.

[MariaDB 10.9.8](/docs/release-notes/community-server/old-releases/10.9/10.9.8.md) is a [***Stable (GA)***](/docs/release-notes/community-server/about/release-criteria.md) release.

[MariaDB 10.9.8](/docs/release-notes/community-server/old-releases/10.9/10.9.8.md) is the last release of the [MariaDB 10.9](/docs/release-notes/community-server/old-releases/10.9/what-is-mariadb-109.md) release series.

**For an overview of** [**MariaDB 10.9**](/docs/release-notes/community-server/old-releases/10.9/what-is-mariadb-109.md) **see the**[**What is MariaDB 10.9?**](/docs/release-notes/community-server/old-releases/10.9/what-is-mariadb-109.md) **page.**

Thanks, and enjoy MariaDB!

## Notable Items

* As per the [MariaDB Maintenance Policy](https://mariadb.org/about/#maintenance-policy), this will be the final release of [MariaDB 10.9](/docs/release-notes/community-server/old-releases/10.9/what-is-mariadb-109.md)

### Upgrading from MySQL

* MariaDB now detects and converts previously incompatible MySQL partition schemes ([MDEV-29253](https://jira.mariadb.org/browse/MDEV-29253))

### General

* As per the [MariaDB Deprecation Policy](/docs/release-notes/community-server/about/platform-deprecation-policy.md), this will be the last release of [MariaDB 10.9](/docs/release-notes/community-server/old-releases/10.9/what-is-mariadb-109.md) for Ubuntu 18.04 LTS "Bionic" and Ubuntu 22.10 "Kinetic"
* [mariadb-dump --force](/docs/server/clients-and-utilities/backup-restore-and-import-clients/mariadb-dump.md) doesn't ignore error as it should ([MDEV-31092](https://jira.mariadb.org/browse/MDEV-31092))
* 280 Bytes lost in mysys/array.c, mysys/hash.c, sql/sp.cc, sql/sp.cc, sql/item\_create.cc, sql/item\_create.cc, sql/sql\_yacc.yy:10748 when using oracle sql\_mode ([MDEV-26186](https://jira.mariadb.org/browse/MDEV-26186))
* SQL/PL package body does not appear in `I_S.ROUTINES.ROUTINE_DEFINITION` ([MDEV-30662](https://jira.mariadb.org/browse/MDEV-30662))
* Unexpected result when combining [DISTINCT](/docs/server/reference/sql-statements/data-manipulation/selecting-data/select.md#distinct), subselect and [LIMIT](/docs/server/reference/sql-statements/data-manipulation/selecting-data/limit.md) ([MDEV-28285](https://jira.mariadb.org/browse/MDEV-28285))
* [ROW](/docs/server/reference/data-types/string-data-types/row.md) variables do not get assigned from subselects ([MDEV-31250](https://jira.mariadb.org/browse/MDEV-31250))
* Crash after setting global session\_track\_system\_variables to an invalid value ([MDEV-25237](https://jira.mariadb.org/browse/MDEV-25237))
* ODKU of non-versioning column inserts history row ([MDEV-23100](https://jira.mariadb.org/browse/MDEV-23100))
* UPDATE not working properly on transaction precise system versioned table ([MDEV-25644](https://jira.mariadb.org/browse/MDEV-25644))
* Assertion \`\`const\_item\_cache == true'`failed in`Item\_func::fix\_fields\` ([MDEV-31319](https://jira.mariadb.org/browse/MDEV-31319))
* ANALYZE doesn't work with pushed derived tables ([MDEV-29284](https://jira.mariadb.org/browse/MDEV-29284))
* `get_partition_set` is never executed in `ha_partition::multi_range_key_create_key` due to bitwise & with 0 constant ([MDEV-24712](https://jira.mariadb.org/browse/MDEV-24712))
* Client can crash the server with a `mysql_list_fields("view")` call ([MDEV-30159](https://jira.mariadb.org/browse/MDEV-30159))
* `I_S.parameters` not immediately changed updated after procedure change ([MDEV-31064](https://jira.mariadb.org/browse/MDEV-31064))
* bzero wipes more bytes than necessary in `set_global_from_ddl_log_entry` ([MDEV-31521](https://jira.mariadb.org/browse/MDEV-31521))
* Assertion \`\`0'`failed in`Type\_handler\_row::field\_type`upon`TO\_CHAR\` with wrong argument ([MDEV-29152](https://jira.mariadb.org/browse/MDEV-29152))
* mysql\_upgrade fails due to `old_mode=""`, with "Cannot load from mysql.proc. The table is probably corrupted" ([MDEV-28915](https://jira.mariadb.org/browse/MDEV-28915))

### Character Sets, Data Types

* [UUIDs](/docs/server/reference/data-types/string-data-types/uuid-data-type.md) version >= 6 are now stored without byte-swapping, UUIDs with version >=8 and variant=0 are now considered invalid, old tables are supported, old (always byte swapped) and new (swapped for version < 6) UUIDs can be compared and converted transparently ([MDEV-29959](https://jira.mariadb.org/browse/MDEV-29959))
* UBSAN: null pointer passed as argument 1, which is declared to never be null in `my_strnncoll_binary` on `SELECT ... COUNT` or `GROUP_CONCAT` ([MDEV-28384](https://jira.mariadb.org/browse/MDEV-28384))
* Possibly wrong result or Assertion `0' failed in` Item\_func\_round::native\_op\` ([MDEV-23838](https://jira.mariadb.org/browse/MDEV-23838))
* Assertion \`\`(length % 4) == 0'`failed in`my\_lengthsp\_utf32`on`SELECT\` ([MDEV-29019](https://jira.mariadb.org/browse/MDEV-29019))
* UBSAN: negation of -X cannot be represented in type `'long long int'`; cast to an unsigned type to negate this value to itself in `Item_func_mul::int_op` and `Item_func_round::int_op` ([MDEV-30932](https://jira.mariadb.org/browse/MDEV-30932))
* Assorted assertion failures in json\_find\_path with certain collations ([MDEV-23187](https://jira.mariadb.org/browse/MDEV-23187))

### InnoDB

* Crashing on I/O error is unhelpful ([MDEV-27593](https://jira.mariadb.org/browse/MDEV-27593))
* SIGSEGV in `log_sort_flush_list()` in InnoDB crash recovery ([MDEV-31354](https://jira.mariadb.org/browse/MDEV-31354))
* InnoDB tables are being flagged as corrupted on an I/O bound server ([MDEV-31767](https://jira.mariadb.org/browse/MDEV-31767))
* Duplicate entry allowed into a [UNIQUE column](/docs/server/server-usage/tables/create-table.md#unique) ([MDEV-31120](https://jira.mariadb.org/browse/MDEV-31120))
* Server Status [Innodb\_row\_lock\_time%](/docs/server/ha-and-performance/optimization-and-tuning/system-variables/innodb-status-variables.md#innodb_row_lock_time) is reported in seconds ([MDEV-29311](https://jira.mariadb.org/browse/MDEV-29311))
* innochecksum dies with Floating point exception ([MDEV-31641](https://jira.mariadb.org/browse/MDEV-31641))
* Add InnoDB engine information to the [slow query log](/docs/server/server-management/server-monitoring-logs/slow-query-log.md) ([MDEV-31558](https://jira.mariadb.org/browse/MDEV-31558))
* Deadlock with 3 concurrent [DELETEs](/docs/server/reference/sql-statements/data-manipulation/changing-deleting-data/delete.md) by [unique key](/docs/server/mariadb-quickstart-guides/mariadb-indexes-guide.md#unique-index) ([MDEV-10962](https://jira.mariadb.org/browse/MDEV-10962))
* innodb protection against dual processes accessing data insufficient ([MDEV-31568](https://jira.mariadb.org/browse/MDEV-31568))
* ER\_DUP\_KEY in `mysql.innodb_table_stats` upon RENAME on sequence ([MDEV-31607](https://jira.mariadb.org/browse/MDEV-31607))
* Assertion \`\`!strcmp(index->table->name.m\_name, "SYS\_FOREIGN") || !strcmp(index->table->name.m\_name, "SYS\_FOREIGN\_COLS")'`failed in`btr\_node\_ptr\_max\_size\` ([MDEV-19216](https://jira.mariadb.org/browse/MDEV-19216))
* InnoDB: Failing assertion: `page_type == i_s_page_type[page_type].type_value` ([MDEV-31386](https://jira.mariadb.org/browse/MDEV-31386))
* `btr_estimate_n_rows_in_range()` accesses unfixed, unlatched page ([MDEV-30648](https://jira.mariadb.org/browse/MDEV-30648))
* `MODIFY COLUMN` can break FK constraints, and lead to unrestorable dumps ([MDEV-31086](https://jira.mariadb.org/browse/MDEV-31086))
* Recovery or backup failure after [innodb\_undo\_log\_truncate=ON](/docs/server/server-usage/storage-engines/innodb/innodb-system-variables.md#innodb_undo_log_truncate) ([MDEV-31487](https://jira.mariadb.org/browse/MDEV-31487))
* Assertion `'n & PENDING'` failed in `fil_space_t::set_needs_flush()` ([MDEV-31442](https://jira.mariadb.org/browse/MDEV-31442))
* `fil_node_open_file()` releases `fil_system.mutex` allowing other thread to open its file node ([MDEV-31256](https://jira.mariadb.org/browse/MDEV-31256))
* ASAN errors in `dict_v_col_t::detach` upon adding key to virtual column ([MDEV-31416](https://jira.mariadb.org/browse/MDEV-31416))
* Purge trying to access freed secondary index page ([MDEV-31264](https://jira.mariadb.org/browse/MDEV-31264))
* Freed data pages are not always being scrubbed ([MDEV-31253](https://jira.mariadb.org/browse/MDEV-31253))
* InnoDB recovery hangs after reporting corruption ([MDEV-31353](https://jira.mariadb.org/browse/MDEV-31353))
* `!cursor->index->is_committed()` in row0ins.cc after update to 10.4.13 from 10.3.21 ([MDEV-22739](https://jira.mariadb.org/browse/MDEV-22739))
* [innodb\_undo\_log\_truncate=ON](/docs/server/server-usage/storage-engines/innodb/innodb-system-variables.md#innodb_undo_log_truncate) fails to wait for purge of enough transaction history ([MDEV-31355](https://jira.mariadb.org/browse/MDEV-31355))
* SET GLOBAL [innodb\_undo\_log\_truncate=ON](/docs/server/server-usage/storage-engines/innodb/innodb-system-variables.md#innodb_undo_log_truncate) does not free space when no undo logs exist ([MDEV-31382](https://jira.mariadb.org/browse/MDEV-31382))
* [innodb\_read\_ahead\_threshold](/docs/server/server-usage/storage-engines/innodb/innodb-system-variables.md#innodb_read_ahead_threshold) (linear read-ahead) does not work ([MDEV-29967](https://jira.mariadb.org/browse/MDEV-29967))
* InnoDB recovery and `mariadb-backup --prepare` fail to report detailed progress ([MDEV-29911](https://jira.mariadb.org/browse/MDEV-29911))
* `fil_ibd_create()` may hijack the file handle of an old file ([MDEV-31347](https://jira.mariadb.org/browse/MDEV-31347))
* [innodb\_undo\_log\_truncate=ON](/docs/server/server-usage/storage-engines/innodb/innodb-system-variables.md#innodb_undo_log_truncate) recovery results in a corrupted undo log ([MDEV-31373](https://jira.mariadb.org/browse/MDEV-31373))
* Server freeze due to [innodb\_change\_buffering](/docs/server/server-usage/storage-engines/innodb/innodb-system-variables.md#innodb_change_buffering) and [innodb\_file\_per\_table=0](/docs/server/server-usage/storage-engines/innodb/innodb-system-variables.md#innodb_file_per_table) ([MDEV-31088](https://jira.mariadb.org/browse/MDEV-31088))
* Change buffer entries are left behind when freeing a page, causing secondary index corruption when the page is later reused ([MDEV-31385](https://jira.mariadb.org/browse/MDEV-31385))
* Foreign Key Constraint actions don't affect Virtual Column ([MDEV-18114](https://jira.mariadb.org/browse/MDEV-18114))

### Aria

* Various crashes upon INSERT/UPDATE after changing Aria settings ([MDEV-28054](https://jira.mariadb.org/browse/MDEV-28054))
* Various crashes/asserts/corruptions when Aria encryption is enabled/used, but the encryption plugin is not loaded ([MDEV-26258](https://jira.mariadb.org/browse/MDEV-26258))

### Spider

* SIGSEGV in `spider_db_open_item_field` and SIGSEGV in `spider_db_print_item_type`, on SELECT ([MDEV-29447](https://jira.mariadb.org/browse/MDEV-29447))
* [Spider variables](/docs/server/server-usage/storage-engines/spider/spider-system-variables.md) that double as table params overriding mechanism is buggy ([MDEV-31524](https://jira.mariadb.org/browse/MDEV-31524))

### Optimizer

* [ANALYZE FORMAT=JSON now includes](/docs/server/reference/sql-statements/administrative-sql-statements/analyze-and-explain-statements/analyze-format-json.md#innodb-engine-statistics) InnoDB engine statistics for each table ([MDEV-31577](https://jira.mariadb.org/browse/MDEV-31577))
* Assertion \`\`last\_key\_entry >= end\_pos'`failed in virtual bool`JOIN\_CACHE\_HASHED::put\_record()\` ([MDEV-31348](https://jira.mariadb.org/browse/MDEV-31348))
* Problem with open ranges on prefix blobs keys ([MDEV-31800](https://jira.mariadb.org/browse/MDEV-31800))
* Equal on two [RANK](/docs/server/reference/sql-functions/special-functions/window-functions/rank.md) [window functions](/docs/server/reference/sql-functions/special-functions/window-functions.md) create wrong result ([MDEV-20010](https://jira.mariadb.org/browse/MDEV-20010))
* Recursive CTE execution is interrupted without errors or warnings ([MDEV-31214](https://jira.mariadb.org/browse/MDEV-31214))
* Assertion \`\`s->table->opt\_range\_condition\_rows <= s->found\_records'`failed in`apply\_selectivity\_for\_table\` ([MDEV-31449](https://jira.mariadb.org/browse/MDEV-31449))
* Inconsistency between MRR and SQL layer costs can cause poor query plan ([MDEV-31479](https://jira.mariadb.org/browse/MDEV-31479))
* `MAX_SEL_ARG` memory exhaustion is not visible in the optimizer trace ([MDEV-30964](https://jira.mariadb.org/browse/MDEV-30964))
* [SHOW TABLES](/docs/server/reference/sql-statements/administrative-sql-statements/show/show-tables.md) not working properly with `lower_case_table_names=2` ([MDEV-30765](https://jira.mariadb.org/browse/MDEV-30765))
* Segfault on select query using index for group-by and filesort ([MDEV-30143](https://jira.mariadb.org/browse/MDEV-30143))
* Server crash in `store_length`, assertion failure in `Type_handler_string_result::sort_length` ([MDEV-31743](https://jira.mariadb.org/browse/MDEV-31743))

### Replication

* Parallel Slave SQL Thread Can Update Seconds\_Behind\_Master with Active Workers ([MDEV-30619](https://jira.mariadb.org/browse/MDEV-30619))
* [ALTER SEQUENCE](/docs/server/reference/sql-structure/sequences/alter-sequence.md) ends up in optimistic parallel slave binlog out-of-order ([MDEV-31503](https://jira.mariadb.org/browse/MDEV-31503))
* [STOP SLAVE](/docs/server/reference/sql-statements/administrative-sql-statements/replication-statements/stop-replica.md) takes very long time on a busy system ([MDEV-13915](https://jira.mariadb.org/browse/MDEV-13915))
* On slave [XA COMMIT/XA ROLLBACK](/docs/server/reference/sql-statements/transactions/xa-transactions.md) fail to return an error in read-only mode ([MDEV-30978](https://jira.mariadb.org/browse/MDEV-30978))
* Calling a function from a different database in a slave side trigger crashes ([MDEV-29894](https://jira.mariadb.org/browse/MDEV-29894))
* `rpl.rpl_manual_change_index_file` occasionally fails in BB with Result length mismatch ([MDEV-30214](https://jira.mariadb.org/browse/MDEV-30214))

### Galera

* Node never returns from Donor/Desynced to Synced when `wsrep_mode = BF_ABORT_mariadb-backup` ([MDEV-31737](https://jira.mariadb.org/browse/MDEV-31737))
* Node has been dropped from the cluster on Startup / Shutdown with async replica ([MDEV-31413](https://jira.mariadb.org/browse/MDEV-31413))
* KILL QUERY maintains nodes data consistency but breaks GTID sequence ([MDEV-31075](https://jira.mariadb.org/browse/MDEV-31075))
* Assertion failure `!lock.was_chosen_as_deadlock_victim in trx0trx.h:1065` ([MDEV-30963](https://jira.mariadb.org/browse/MDEV-30963))
* MariaDB stuck on starting commit state (waiting on commit order critical section) ([MDEV-29293](https://jira.mariadb.org/browse/MDEV-29293))
* Assertion `state() == s_aborting || state() == s_must_replay` failed in int wsrep::transaction::after\_rollback() ([MDEV-30013](https://jira.mariadb.org/browse/MDEV-30013))
* Assertion `!wsrep_has_changes(thd) || (thd->lex->sql_command == SQLCOM_CREATE_TABLE && !thd->is_current_stmt_binlog_format_row()) || thd->wsrep_cs().transaction().state() == wsrep::transaction::s_aborted` failed ([MDEV-30388](https://jira.mariadb.org/browse/MDEV-30388))
* Server crashes when wsrep\_sst\_donor and wsrep\_cluster\_address set to NULL ([MDEV-28433](https://jira.mariadb.org/browse/MDEV-28433))
* Create temporary sequence can cause inconsistency ([MDEV-31335](https://jira.mariadb.org/browse/MDEV-31335))
* Galera 4 unable to query cluster state if not primary component ([MDEV-21479](https://jira.mariadb.org/browse/MDEV-21479))

### Security

* Fixes for the following [security vulnerabilities](/docs/server/security/cve.md):
  * CVE-`-``#`

## Changelog

For a complete list of changes made in [MariaDB 10.9.8](/docs/release-notes/community-server/old-releases/10.9/10.9.8.md), with links to detailed information on each push, see the [changelog](/docs/release-notes/community-server/changelogs/10.9/10.9.8.md).

## Contributors

For a full list of contributors to [MariaDB 10.9.8](/docs/release-notes/community-server/old-releases/10.9/10.9.8.md), see the [MariaDB Foundation release announcement](https://mariadb.org/mariadb-11-0-3-10-11-5-10-10-6-10-9-8-10-6-15-10-5-22-10-4-31-now-available/).

{% hint style="info" %}
Be notified of new MariaDB Server releases automatically by [subscribing](https://lists.mariadb.org/postorius/lists/announce.lists.mariadb.org/) to the MariaDB Foundation community announce 'at' lists.mariadb.org announcement list (this is a low traffic, announce-only list). MariaDB plc customers will be notified for all new releases, security issues and critical bug fixes for all MariaDB plc products thanks to the Notification Services.

MariaDB may already be included in your favorite OS distribution. More information can be found on the [Distributions which Include MariaDB](/docs/general-resources/distributions-including-mariadb.md) page.
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