op-guide: Add load data compatibility description #75
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
|
shenli
reviewed
Jan 5, 2017
| @@ -40,3 +40,6 @@ TiDB 实现了 F1 的异步 Schema 变更算法，DDL 执行过程中不会阻 | |||
|
|
|||
| ### 事务 | |||
| TiDB 使用乐观事务模型，在执行 Update、Insert、Delete 等语句时，只有在提交过程中才会检查写写冲突，而不是像 MySQL 一样使用行锁来避免写写冲突。所以业务端在执行 SQL 语句后，需要注意检查 commit 的返回值，即使执行时没有出错，commit的时候也可能会出错。 | |||
|
|
|||
| ### Load data | |||
| TiDB 在执行 load data 时，默认每 20 万行记录作为一个事务进行持久化存储。 | |||
|
LGTM |
|
@coocood PTAL |
|
LGTM |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
No description provided.