Details
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Bug
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Status: Closed (View Workflow)
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Major
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Resolution: Not a Bug
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10.5.11, 10.5.12
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debian unstable
Description
Hi
I have table corruption caught by check table.
I narrowed my ~400M rows table to a single integer column. The error happens after index creation if you run check table.
I managed to recreate it with a random set of 70K values distributed in 400M rows.
See the attached script. It completes in 32' in my system (oldish xeon with NVM) and it fails
with
--------------
|
CHECK TABLE bugtable
|
--------------
|
 |
+---------------+-------+-------+------------------------------------------+
|
| budb.bugtable | check | error | Key in wrong position at page 1023494144 | |
| budb.bugtable | check | error | Corrupt |
|
+---------------+-------+-------+------------------------------------------+
|
2 rows in set (38.701 sec) |
|
The script is easily run with:
time ./mysql-index-corruption-bug.sh bugdb bugtable;
|
Attachments
Issue Links
- relates to
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MDEV-16461 MyISAM creates defect indexes on varchar, if rowcount is above some threshold between 480,000,000 and 490,000,000
- Confirmed