- 22 Jul, 2020 4 commits
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Thirunarayanan Balathandayuthapani authored
MDEV-23252 Assertion failure 'req_type.is_dblwr_recover() || err == DB_SUCCESS' for page_compressed tables - This issue is caused by a5584b13 (MDEV-15528). os_file_punch_hole() is added to fil_io() in MDEV-15528. But it fails to handle failure of os_file_punch_hole(). InnoDB should handle the DB_IO_NO_PUNCH_HOLE error and silently transform to DB_SUCCESS. InnoDB should set the punch hole flag correctly when tablespace is loaded fil_node_t::read_page0(): Set the punch hole flag when tablespace is loaded fil_io(): Handle the DB_IO_NO_PUNCH_HOLE error buf_flush_free_pages(): Checks the punch hole condition earlier using tablespace punch hole flag
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Thirunarayanan Balathandayuthapani authored
InnoDB should replace FSP_FLAGS_HAS_PAGE_COMPRESSION check with fil_space_t::is_compressed(). fil_space_t::is_compressed() checks for both non full crc32 and crc32 format.
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Jan Lindström authored
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sjaakola authored
When high priority replication slave applier encounters lock conflict in innodb, it will force the conflicting lock holder transaction (victim) to rollback. This is a must in multi-master sychronous replication model to avoid cluster lock-up. This high priority victim abort (aka "brute force" (BF) abort), is started from innodb lock manager while holding the victim's transaction's (trx) mutex. Depending on the execution state of the victim transaction, it may happen that the BF abort will call for THD::awake() to wake up the victim transaction for the rollback. Now, if BF abort requires THD::awake() to be called, then the applier thread executed locking protocol of: victim trx mutex -> victim THD::LOCK_thd_data If, at the same time another DBMS super user issues KILL command to abort the same victim, it will execute locking protocol of: victim THD::LOCK_thd_data -> victim trx mutex. These two locking protocol acquire mutexes in opposite order, hence unresolvable mutex locking deadlock may occur. The fix in this commit adds THD::wsrep_aborter flag to synchronize who can kill the victim This flag is set both when BF is called for from innodb and by KILL command. Either path of victim killing will bail out if victim's wsrep_killed is already set to avoid mutex conflicts with the other aborter execution. THD::wsrep_aborter records the aborter THD's ID. This is needed to preserve the right to kill the victim from different locations for the same aborter thread. It is also good error logging, to see who is reponsible for the abort. A new test case was added in galera.galera_bf_kill_debug.test for scenario where wsrep applier thread and manual KILL command try to kill same idle victim
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- 21 Jul, 2020 5 commits
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Marko Mäkelä authored
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Marko Mäkelä authored
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Marko Mäkelä authored
trx_update_mod_tables_timestamp(): When implementing innodb_evict_tables_on_commit_debug, do not evict tables on which transactional locks exist. This debug variable was broken since its introduction in commit 947b0b57.
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Monty authored
Problem was that the code didn't handle a transaction created in innodb as part of a failed mysql_lock_tables()
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Monty authored
The issue was: T1, a parallel slave worker thread, is waiting for another worker thread to commit. While waiting, it has the MDL_BACKUP_COMMIT lock. T2, working for mariabackup, is doing BACKUP STAGE BLOCK_COMMIT and blocks all commits. This causes a deadlock as the thread T1 is waiting for can't commit. Fixed by moving locking of MDL_BACKUP_COMMIT from ha_commit_trans() to commit_one_phase_2() Other things: - Added a new argument to ha_comit_one_phase() to signal if the transaction was a write transaction. - Ensured that ha_maria::implicit_commit() is always called under MDL_BACKUP_COMMIT. This code is not needed in 10.5 - Ensure that MDL_Request values 'type' and 'ticket' are always initialized. This makes it easier to check the state of the MDL_Request. - Moved thd->store_globals() earlier in handle_rpl_parallel_thread() as thd->init_for_queries() could use a MDL that could crash if store_globals where not called. - Don't call ha_enable_transactions() in THD::init_for_queries() as this is both slow (uses MDL locks) and not needed.
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- 20 Jul, 2020 13 commits
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Eugene Kosov authored
MDEV-22899 Assertion `field->col->is_binary() || field->prefix_len % field->col->mbmaxlen == 0' failed in dict_index_add_to_cache is_part_of_a_key(): detect is TEXT field is a part of some key ha_innobase::can_convert_blob(): now correctly detect whether our blob is a part of some key. Previously the check didn't work in some cases.
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Aleksey Midenkov authored
Fix stale virtual field value in 4 cases: when virtual field depends on row_start/row_end in timestamp/trx_id versioned table. row_start dep is recalculated in vers_update_fields() (SQL and InnoDB layer). row_end dep is recalculated on history row insert.
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Aleksey Midenkov authored
MDEV-22061 InnoDB: Assertion of missing row in sec index row_start upon REPLACE on a system-versioned table make_versioned_helper() appended new update field unconditionally while it should check if this field already exists in update vector. Misc renames to conform versioning prefix. vers_update_fields() name conforms with sql layer TABLE::vers_update_fields().
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Thirunarayanan Balathandayuthapani authored
when scrubbing is enabled buf_read_recv_pages(): Ignore the page to read if it is already present in the freed ranges. store_freed_or_init_rec(): Store the ranges only if scrubbing is enabled or page compressed tablespace. recv_init_crash_recovery_space(): Add the freed range only when scrubbing or page compressed tablespace. range_set::contains(): Search the value is present in ranges. range_set::remove_if_exists(): Remove the value if exist in ranges. mtr_t::init(): Handles the scenario that mini-transaction may allocate a page that had just been freed. recv_sys_t::parse(): Note down the FREE and INIT redo log irrespective of STORE value. Removed innodb_tablespaces_scrubbing from test case
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Marko Mäkelä authored
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Marko Mäkelä authored
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Marko Mäkelä authored
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Marko Mäkelä authored
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Marko Mäkelä authored
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Marko Mäkelä authored
When InnoDB is extending a data file, it is updating the FSP_SIZE field in the first page of the data file. In commit 8451e090 (MDEV-11556) we removed a work-around for this bug and made recovery stricter, by making it track changes to FSP_SIZE via redo log records, and extend the data files before any changes are being applied to them. It turns out that the function fsp_fill_free_list() is not crash-safe with respect to this when it is initializing the change buffer bitmap page (page 1, or generally, N*innodb_page_size+1). It uses a separate mini-transaction that is committed (and will be written to the redo log file) before the mini-transaction that actually extended the data file. Hence, recovery can observe a reference to a page that is beyond the current end of the data file. fsp_fill_free_list(): Initialize the change buffer bitmap page in the same mini-transaction. The rest of the changes are fixing a bug that the use of the separate mini-transaction was attempting to work around. Namely, we must ensure that no other thread will access the change buffer bitmap page before our mini-transaction has been committed and all page latches have been released. That is, for read-ahead as well as neighbour flushing, we must avoid accessing pages that might not yet be durably part of the tablespace. fil_space_t::committed_size: The size of the tablespace as persisted by mtr_commit(). fil_space_t::max_page_number_for_io(): Limit the highest page number for I/O batches to committed_size. MTR_MEMO_SPACE_X_LOCK: Replaces MTR_MEMO_X_LOCK for fil_space_t::latch. mtr_x_space_lock(): Replaces mtr_x_lock() for fil_space_t::latch. mtr_memo_slot_release_func(): When releasing MTR_MEMO_SPACE_X_LOCK, copy space->size to space->committed_size. In this way, read-ahead or flushing will never be invoked on pages that do not yet exist according to FSP_SIZE.
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Marko Mäkelä authored
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Marko Mäkelä authored
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Marko Mäkelä authored
commit 854c219a (MDEV-17301) broke a constraint: Fixed-length columns cannot be extended in InnoDB without rebuilding the table. ha_innobase::can_convert_string(): Correct the condition. We must not allow any instantaneous change to the length of CHAR columns measured in characters. For any format other than ROW_FORMAT=REDUNDANT, we can allow the length in bytes to be extended if mbminlen<mbmaxlen held before the change of the character set.
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- 18 Jul, 2020 1 commit
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Varun Gupta authored
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- 17 Jul, 2020 1 commit
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Alexey Botchkov authored
m_file[0] not always is a good sample.
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- 16 Jul, 2020 9 commits
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Julius Goryavsky authored
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Julius Goryavsky authored
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Julius Goryavsky authored
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Julius Goryavsky authored
Server auto-sets lower_case_file_system value based on default datadir's behavior instead of instead of using the directory specified by the user through the configuration file or command line options. This patch fixes this problem.
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Julius Goryavsky authored
Server auto-sets lower_case_file_system value based on default datadir's behavior instead of instead of using the directory specified by the user through the configuration file or command line options. This patch fixes this problem.
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Marko Mäkelä authored
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Marko Mäkelä authored
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Marko Mäkelä authored
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Marko Mäkelä authored
In commit 0f90728b (MDEV-16809) we introduced the configuration option innodb_log_optimize_ddl for controlling whether native index creation or table-rebuild in InnoDB should avoid writing full redo log. Fungo Wang reported that this option is causing occasional failures. The reason is that pages may be written to data files in an inconsistent state. Applying log records to such inconsistent pages may fail. The solution is to always invoke PageBulk::finish() before page latches may be released, to ensure that the page contents is in a consistent state. Something similar was implemented in MySQL 8.0.13: mysql/mysql-server@d1254b947354e0f5b7223b09c521bd85f22e1e31 buf_block_t::skip_flush_check: Remove. Suppressing consistency checks is a bad idea. PageBulk::needs_finish(): New predicate: Determine whether PageBulk::finish() must fix up the page. PageBulk::init(): Clear PAGE_DIRECTION to ensure that needs_finish() will hold. We change the field from PAGE_NO_DIRECTION to 0 and back without writing redo log. This trick avoids the need to introduce any new data member to PageBulk. PageBulk::insert(): Replace some high-level accessors to bypass debug assertions related to PAGE_HEAP_TOP that we will be violating until finish() has been executed. PageBulk::finish(): Tolerate m_rec_no==0. We must invoke this also on an empty page, to ensure that PAGE_HEAP_TOP is initialized. PageBulk::commit(): Always invoke finish(). PageBulk::release(), BtrBulk::pageSplit(), BtrBulk::storeExt(), BtrBulk::finish(): Invoke PageBulk::finish().
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- 15 Jul, 2020 7 commits
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Marko Mäkelä authored
page_simple_validate_old(), page_simple_validate_new(): Require PAGE_N_DIR_SLOTS to be at least 2.
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Marko Mäkelä authored
MDEV-22721 (commit eba2d10a) inadvertently introduced an infinite loop. page_validate(): Remove the infinite loop.
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Daniel Black authored
Linux glibc has deprecated ftime resutlting in a compile error on Fedora-32. Per manual clock_gettime is the suggested replacement. Because my_timer_milliseconds is a relative time used by largely the perfomrance schema, CLOCK_MONOTONIC_COARSE is used. This has been available since Linux-2.6.32. The low overhead is shows in the unittest: $ unittest/mysys/my_rdtsc-t 1..11 # ----- Routine --------------- # myt.cycles.routine : 5 # myt.nanoseconds.routine : 11 # myt.microseconds.routine : 13 # myt.milliseconds.routine : 18 # myt.ticks.routine : 17 # ----- Frequency ------------- # myt.cycles.frequency : 3596597014 # myt.nanoseconds.frequency : 1000000000 # myt.microseconds.frequency : 1000000 # myt.milliseconds.frequency : 1039 # myt.ticks.frequency : 103 # ----- Resolution ------------ # myt.cycles.resolution : 1 # myt.nanoseconds.resolution : 1 # myt.microseconds.resolution : 1 # myt.milliseconds.resolution : 1 # myt.ticks.resolution : 1 # ----- Overhead -------------- # myt.cycles.overhead : 118 # myt.nanoseconds.overhead : 234 # myt.microseconds.overhead : 222 # myt.milliseconds.overhead : 30 # myt.ticks.overhead : 4946 ok 1 - my_timer_init() did not crash ok 2 - The cycle timer is strictly increasing ok 3 - The cycle timer is implemented ok 4 - The nanosecond timer is increasing ok 5 - The nanosecond timer is implemented ok 6 - The microsecond timer is increasing ok 7 - The microsecond timer is implemented ok 8 - The millisecond timer is increasing ok 9 - The millisecond timer is implemented ok 10 - The tick timer is increasing ok 11 - The tick timer is implemented
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Marko Mäkelä authored
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Vladislav Vaintroub authored
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Marko Mäkelä authored
In fsp_path_to_space_name(), we would access a byte right before the start of the string, tripping AddressSanitizer. This reverts commit d87006a1 and commit a7634281.
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Marko Mäkelä authored
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