MySQL 5.7.29 includes the following bug fix:
Bug#30342846 : N_EXT CALCULATION IS NOT CORRECT WHICH CAUSES WRONG RECORD SIZE CALCULATION an earlier fix in MySQL 5.7.5 . I verified that the changed code is covered by the test innodb.blob-crash .
The fix does not include any test case, and the consequences of this bug are unclear to me. Possibly some data corruption caused by counting some off-page columns twice?
Note: InnoDB treats a long enough VARCHAR (or even CHAR ) in the same way as BLOB and TEXT and similar data types.
I did review the original change. Before that, an UPDATE operation in InnoDB was not always crash-safe. The fix was that if a non-updated column needs to be moved to off-page storage, we must include it in the undo log record.
made changes -
2020-01-17 14:44
issue.field.resolutiondate
2020-01-17 14:44:10.0
2020-01-17 14:44:10.93
made changes -
2020-01-17 14:44
Fix Version/s
10.2.31
[ 24017
]
Fix Version/s
10.3.22
[ 24018
]
Fix Version/s
10.4.12
[ 24019
]
Fix Version/s
10.5.1
[ 24029
]
Fix Version/s
10.2
[ 14601
]
Fix Version/s
10.3
[ 22126
]
Fix Version/s
10.4
[ 22408
]
Fix Version/s
10.5
[ 23123
]
Resolution
Fixed
[ 1
]
Status
Open
[ 1
]
Closed
[ 6
]
made changes -
2021-12-06 21:50
Workflow
MariaDB v3
[ 103123
]
MariaDB v4
[ 157211
]
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Bug
Major
