Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Cached table size limit should be 64 MiB (#19918) #19919

Merged
merged 1 commit into from
Jan 7, 2025
Merged

Cached table size limit should be 64 MiB (#19918) #19919

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Cached table size limit should be 64 MiB 
https://github.com/pingcap/tidb/blob/c199ddfcdf9e1f88a243c2b7847d8f3224446004/pkg/ddl/executor.go#L6402
```
const cacheTableSizeLimit = 64 * (1 << 20) // 64M
```
  • Loading branch information
@yahonda @ti-chi-bot
yahonda authored and ti-chi-bot committed Jan 7, 2025
commit a62e750dbe82f09c05e2bdbc49b4444be940fb4e
2 changes: 1 addition & 1 deletion cached-tables.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -215,7 +215,7 @@ Query OK, 0 rows affected (0.00 sec)

Cached tables are only suitable for scenarios with small tables, because TiDB loads the data of an entire table into memory, and the cached data becomes invalid after modification and needs to be reloaded.

Currently, the size limit of a cached table is 64 MB in TiDB. If the table data exceeds 64 MB, executing `ALTER TABLE t CACHE` will fail.
Currently, the size limit of a cached table is 64 MiB in TiDB. If the table data exceeds 64 MiB, executing `ALTER TABLE t CACHE` will fail.

## Compatibility restrictions with other TiDB features

Expand Down
Loading