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5.0 GA: update release notes, experimental features, roadmap (#5147) #5247

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Apr 7, 2021
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5.0 GA: update release notes, experimental features, roadmap (#5147) #5247

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cce12c4
cherry pick #5147 to release-5.0
yikeke Apr 7, 2021
49f77da
Update TOC.md
Apr 7, 2021
ebf74de
Delete roadmap.md
Apr 7, 2021
b17076c
Update experimental-features.md
yikeke Apr 7, 2021
596a50c
Merge remote-tracking branch 'upstream/release-5.0' into pr/5247
Apr 7, 2021
2d11a7c
remove rc description
Apr 7, 2021
fab72dc
Update release-5.0.0.md
Apr 7, 2021
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Update release-5.0.0.md
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yikeke committed Apr 7, 2021
commit fab72dc6bf736f9ad589ffc822d2f710f50a880d
2 changes: 1 addition & 1 deletion releases/release-5.0.0.md
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Expand Up @@ -27,7 +27,7 @@ In v5.0, the key new features or improvements are as follows:
### System variables

+ Add the [`tidb_executor_concurrency`](/system-variables.md#tidb_executor_concurrency-new-in-v50) system variable to control the concurrency of multiple operators. The previous `tidb_*_concurrency` settings (such as `tidb_projection_concurrency`) still take effect but with a warning when you use them.
+ Add the [`tidb_skip_ascii_check`](/system-variables.md#tidb_skip_ascii_check) system variable to specify whether to skip the ASCII validation check when the ASCII character set is written. This default value is `OFF`.
+ Add the [`tidb_skip_ascii_check`](/system-variables.md#tidb_skip_ascii_check-new-in-v50) system variable to specify whether to skip the ASCII validation check when the ASCII character set is written. This default value is `OFF`.
+ Add the [`tidb_enable_strict_double_type_check`](/system-variables.md#tidb_enable_strict_double_type_check-new-in-v50) system variable to determine whether the syntax like `double(N)` can be defined in the table schema. This default value is `OFF`.
+ Change the default value of [`tidb_dml_batch_size`](/system-variables.md#tidb_dml_batch_size) from `20000` to `0`. This means that batch DML statements are no longer used by default in `LOAD`/`INSERT INTO SELECT ...`. Instead, large transactions are used to comply with the strict ACID semantics.

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