Type:
Priority:
Resolution:
Fixed
Affects Version/s:
10.5 , 10.6 , 10.11 , 11.0(EOL) , 11.1(EOL) , 11.2(EOL) , 11.3(EOL)
Environment:
Ubuntu 18.04 on AMD64
After implementing MDEV-32757 innodb_undo_log_truncate=ON . The server is not actually hung or deadlocked (it will eventually recover), but buf_pool.mutex is being occupied for an extremely long time (several minutes).
trx_purge_truncate_history() writes the message InnoDB: Truncating and is about to truncate an undo log tablespace.trx_purge_truncate_history() is busy-looping in a scan of buf_pool.flush_list because one of the pages belonging to the undo tablespace is write-fixed.During the time trx_purge_truncate_history() releases and re-acquires buf_pool.flush_list_mutex , buf_flush_page_cleaner (which is holding buf_pool.mutex in buf_do_flush_list_batch() ) cannot grab it, in this Ubuntu 18.04 version of GNU libc and Linux kernel (4.15.0-112-generic). This could be similar to MDEV-31343 MDEV-30180
Most threads are blocked because the buf_flush_page_cleaner thread is holding buf_pool.mutex .
There is some indication that buf_flush_list_batch() may be making some progress (writing out some pages), but it would be extremely slow.
made changes -
2023-12-13 08:08
Status
Open
[ 1
]
In Progress
[ 3
]
made changes -
2023-12-13 09:04
Status
In Progress
[ 3
]
In Testing
[ 10301
]
made changes -
2023-12-13 09:04
Assignee
Marko Mäkelä
[ marko
]
Axel Schwenke
[ axel
]
made changes -
2023-12-15 09:06
Status
In Testing
[ 10301
]
Stalled
[ 10000
]
made changes -
2023-12-15 09:07
Assignee
Axel Schwenke
[ axel
]
Marko Mäkelä
[ marko
]
made changes -
2023-12-15 09:49
Environment
Ubuntu 18.04 on AMD64
Ubuntu 18.04 on AMD64
made changes -
2023-12-15 09:49
Status
Stalled
[ 10000
]
In Progress
[ 3
]
made changes -
2023-12-15 11:02
Status
In Progress
[ 3
]
In Testing
[ 10301
]
made changes -
2023-12-15 11:05
Assignee
Marko Mäkelä
[ marko
]
Axel Schwenke
[ axel
]
made changes -
2023-12-15 16:31
Status
In Testing
[ 10301
]
Stalled
[ 10000
]
made changes -
2023-12-15 16:31
Assignee
Axel Schwenke
[ axel
]
Marko Mäkelä
[ marko
]
made changes -
2023-12-19 15:47
issue.field.resolutiondate
2023-12-19 15:47:41.0
2023-12-19 15:47:41.396
made changes -
2023-12-19 15:47
Fix Version/s
10.5.24
[ 29517
]
Fix Version/s
10.6.17
[ 29518
]
Fix Version/s
10.11.7
[ 29519
]
Fix Version/s
11.0.5
[ 29520
]
Fix Version/s
11.1.4
[ 29024
]
Fix Version/s
11.2.3
[ 29521
]
Fix Version/s
11.3.2
[ 29522
]
Fix Version/s
10.5
[ 23123
]
Fix Version/s
10.6
[ 24028
]
Fix Version/s
10.11
[ 27614
]
Fix Version/s
11.0
[ 28320
]
Fix Version/s
11.1
[ 28549
]
Fix Version/s
11.3
[ 28565
]
Fix Version/s
11.2
[ 28603
]
Resolution
Fixed
[ 1
]
Status
Stalled
[ 10000
]
Closed
[ 6
]
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Bug
Blocker
