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| ID# | Date | Updated | Type | Status | Sev | Version | OS | CPU | Summary |
|---|---|---|---|---|---|---|---|---|---|
| 85331 | 2017-03-06 19:46 | 2017-09-27 2:00 | MySQL Server: Charsets | Closed (2848 days) | S3 | 5.6, 5.7, etc, 5.6.35 | Any | Any | _characterset specifications have lousy performance for some character sets |
| 85213 | 2017-02-27 18:55 | 2018-10-22 16:50 | MySQL Server: C API (client library) | Closed (2458 days) | S1 | 5.7.17 | Any | Any | ssl_mode=PREFERRED doesn't prefer SSL |
| 84972 | 2017-02-14 1:09 | 2017-02-14 8:37 | MySQL Server: DML | Verified (3073 days) | S3 | 5.6,5.7.17, 5.6.35 | Any | Any | truncation warning gets eaten by assignment |
| 84958 | 2017-02-10 23:18 | 2018-08-14 11:18 | MySQL Server: InnoDB storage engine | Closed (2538 days) | S2 | 5.6.*, 5.6.35 | Any | Any | InnoDB's MVCC has O(N^2) behaviors |
| 83026 | 2016-09-16 19:02 | 2016-09-30 7:25 | MySQL Server: InnoDB storage engine | Verified (3210 days) | S3 | 5.6 | Any | Any | innodb history list length missing in 'show global status' |
| 63879 | 2011-12-30 10:01 | 2011-12-30 15:11 | MySQL Server: InnoDB storage engine | Verified (4946 days) | S3 | 5.1 | Any | Any | Dropping a partitioned table is extremely costly |
| 55582 | 2010-07-27 13:25 | 2011-02-16 23:44 | Tools: MTR / mysql-test-run | Closed (5358 days) | S3 | 5.1-bzr | Any (MacOSX 10.6) | Any | mtr root detection (and if-expression execution) broken |
| 61517 | 2011-06-14 18:32 | 2018-10-29 18:01 | MySQL Server: Optimizer | Closed (2451 days) | S3 | 5.1, 5.5 | Any | Any | loose index scan not done when LIMIT provided |
| 61548 | 2011-06-17 8:55 | 2012-11-16 13:07 | MySQL Server: Replication | Closed (4624 days) | S3 | 5.1 and others | Any | Any | autoinc value persistency breaks certain replication scenarios |
| 61735 | 2011-07-04 11:30 | 2011-07-08 6:02 | MySQL Server: InnoDB storage engine | Verified (5121 days) | S3 | 5.1, etc | Any | Any | index->lock held while preads are done |
| 61736 | 2011-07-04 11:34 | 2013-11-27 16:29 | MySQL Server: InnoDB storage engine | Closed (4248 days) | S3 | 5.1, ... | Any | Any | multiple unnecessary page reads done in latching code |
| 61927 | 2011-07-20 12:11 | 2011-07-25 14:46 | MySQL Server: InnoDB Plugin storage engine | Verified (5104 days) | S3 | 5.5-bzr, 5.1-bzr | Any | Any | DATA_LENGTH doesn't show anything useful for compressed tables |
| 62282 | 2011-08-28 21:52 | 2012-05-31 17:31 | MySQL Server: DML | Closed (4793 days) | S5 | 5.5, 5.1, ... | Any | Any | LOCK_thread_count is used for random functions |
| 62283 | 2011-08-28 21:55 | 2013-08-08 18:05 | MySQL Server: Locking | Closed (4359 days) | S5 | 5.1, 5.5, ... | Any | Any | accept() socket gets too much of fcntl()s |
| 62284 | 2011-08-28 21:57 | 2013-08-08 18:04 | MySQL Server: Locking | Closed (4359 days) | S5 | Any | Any | too much network initialization done in accept() thread | |
| 62285 | 2011-08-28 22:00 | 2012-03-19 15:49 | MySQL Server: Locking | Closed (4866 days) | S3 | Any | Any | don't initialize vio string description, create it on demand | |
| 62286 | 2011-08-28 22:02 | 2011-09-06 9:56 | MySQL Server: Locking | Verified (5069 days) | S5 | 5.1, 5.5, ... | Any | Any | call multiple accepts per poll |
| 62287 | 2011-08-28 22:07 | 2018-12-03 5:17 | MySQL Server: Locking | Verified (5069 days) | S3 | 5.1, 5.5 | Any | Any | don't serialize thread cache |
| 62288 | 2011-08-28 22:10 | 2013-08-08 18:02 | MySQL Server: Locking | Closed (4359 days) | S5 | 5.1, 5.5 | Any | Any | THD initialization too expensive for accept() thread |
| 62534 | 2011-09-25 12:46 | 2014-06-02 18:28 | MySQL Server: InnoDB storage engine | Closed (4142 days) | S3 | 5.1-head, 5.5-head | Any | Any | off by one error in innodb_max_dirty_pages_pct logic |
| 62536 | 2011-09-25 15:44 | 2012-08-30 13:04 | MySQL Server: InnoDB storage engine | Closed (4702 days) | S3 | 5.5, 5.1, etc | Any | Any | partitions use too much memory |
| 71384 | 2014-01-14 23:12 | 2014-01-16 18:40 | MySQL Server | Unsupported (4198 days) | S1 | 5.1.63 | Any | Any | DROP DATABASE + CREATE TABLE + SHOW GLOBAL VARIABLES deadlock |
| 66921 | 2012-09-21 20:33 | 2016-01-20 20:03 | MySQL Server: Replication | Can't repeat (4438 days) | S3 | 5.1, probably others | Any | Any | Seconds_behind_master distorted because of verbatim master's FDE in relaylog |
| 67736 | 2012-11-28 3:55 | 2012-11-28 18:24 | MySQL Server: Performance Schema | Closed (4612 days) | S1 | 5.6-head | Any | Any | default P_S configuration wastes CPU on a busy server |
| 71145 | 2013-12-13 23:18 | 2013-12-14 0:03 | MySQL Server: InnoDB storage engine | Not a Bug (4231 days) | S3 | 5.6.15 | Any | Any | InnoDB will not reclaim space if records are deleted |
| 67840 | 2012-12-07 19:43 | 2013-01-10 19:19 | MySQL Server: Replication | Verified (4569 days) | S3 | 5.1, 5.5, 5.5.30, 5.7.1 | Any | Any | MySQL replication start inefficient at large RTTs |
| 68069 | 2013-01-10 20:02 | 2013-02-12 20:06 | MySQL Server: InnoDB storage engine | Closed (4536 days) | S3 | 5.1, maybe others | Any | Any | mtr_memo_release and dyn_array together are very inefficient |
| 68439 | 2013-02-20 2:35 | 2018-03-08 23:39 | MySQL Server: DML | Can't repeat (2686 days) | S2 | 5.1 | Any | Any | Unsigned INTs underflow in case of math |
| 65077 | 2012-04-23 14:32 | 2012-08-29 15:11 | MySQL Server: MyISAM storage engine | Closed (4703 days) | S1 | 5.1 | Any | Any | internal temporary tables are contended on THR_LOCK_myisam |
| 69028 | 2013-04-22 0:35 | 2013-04-22 7:49 | MySQL Server: Replication | Closed (4467 days) | S3 | 5.6.11 | Any | Any | Not-So-Multithreaded-Slave |
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