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new cb9e0667bb7 [doc] note CHAR BloomFilter no longer takes effect since
4.1.2 (#3759)
cb9e0667bb7 is described below
commit cb9e0667bb707f3d27739caed2e45dd1a2aeb584
Author: Chenyang Sun <[email protected]>
AuthorDate: Mon May 25 11:48:32 2026 +0800
[doc] note CHAR BloomFilter no longer takes effect since 4.1.2 (#3759)
## Versions
- [x] dev
- [x] 4.x
- [ ] 3.x
- [ ] 2.1 or older (not covered by version/language sync gate)
## Languages
- [x] Chinese
- [x] English
- [ ] Japanese candidate translation needed
## Docs Checklist
- [ ] Checked by AI
- [ ] Test Cases Built
- [ ] Updated required version and language counterparts, or explained
why not
- [ ] If only one language changed, confirmed whether source/translation
counterparts need sync
Co-authored-by: Claude Opus 4.7 (1M context) <[email protected]>
---
docs/table-design/index/bloomfilter.md | 1 +
.../current/table-design/index/bloomfilter.md | 1 +
.../version-4.x/table-design/index/bloomfilter.md | 1 +
versioned_docs/version-4.x/table-design/index/bloomfilter.md | 1 +
4 files changed, 4 insertions(+)
diff --git a/docs/table-design/index/bloomfilter.md
b/docs/table-design/index/bloomfilter.md
index 636d6a78ea3..48d973b69d9 100644
--- a/docs/table-design/index/bloomfilter.md
+++ b/docs/table-design/index/bloomfilter.md
@@ -58,6 +58,7 @@ The BloomFilter index can accelerate equality queries
(including `=` and `IN`),
- **Query type limitation**: Only effective for `=` and `IN` queries. Not
effective for queries such as `!=`, `NOT IN`, `>`, or `<`.
- **Data type limitation**: Building a BloomFilter index on columns of types
`Tinyint`, `Float`, or `Double` is not supported.
- **Cardinality limitation**: The acceleration effect on low-cardinality
columns is limited. For example, a "gender" column has only two values, so
almost every data block contains all values. The BloomFilter cannot filter
data, and the index becomes meaningless.
+- **Version limitation**: Starting from version 4.1.2, BloomFilter indexes
on `CHAR` type columns no longer take effect.
## Managing Indexes
diff --git
a/i18n/zh-CN/docusaurus-plugin-content-docs/current/table-design/index/bloomfilter.md
b/i18n/zh-CN/docusaurus-plugin-content-docs/current/table-design/index/bloomfilter.md
index fec9648d34a..6a8c9647ccd 100644
---
a/i18n/zh-CN/docusaurus-plugin-content-docs/current/table-design/index/bloomfilter.md
+++
b/i18n/zh-CN/docusaurus-plugin-content-docs/current/table-design/index/bloomfilter.md
@@ -58,6 +58,7 @@ BloomFilter 索引能够加速等值查询（包括 `=` 和 `IN`），尤其适
- **查询类型限制**：仅对 `=` 和 `IN` 查询有效，对 `!=`、`NOT IN`、`>`、`<` 等查询无效。
- **数据类型限制**：不支持对 `Tinyint`、`Float`、`Double` 类型的列建立 BloomFilter 索引。
- **基数限制**：对低基数字段加速效果有限。例如“性别”字段只有两种取值，几乎每个数据块都会包含所有值，BloomFilter
无法过滤数据，索引失去意义。
+- **版本限制**：自 4.1.2 版本起，`CHAR` 类型的 BloomFilter 索引不再生效。
## 管理索引
diff --git
a/i18n/zh-CN/docusaurus-plugin-content-docs/version-4.x/table-design/index/bloomfilter.md
b/i18n/zh-CN/docusaurus-plugin-content-docs/version-4.x/table-design/index/bloomfilter.md
index fec9648d34a..6a8c9647ccd 100644
---
a/i18n/zh-CN/docusaurus-plugin-content-docs/version-4.x/table-design/index/bloomfilter.md
+++
b/i18n/zh-CN/docusaurus-plugin-content-docs/version-4.x/table-design/index/bloomfilter.md
@@ -58,6 +58,7 @@ BloomFilter 索引能够加速等值查询（包括 `=` 和 `IN`），尤其适
- **查询类型限制**：仅对 `=` 和 `IN` 查询有效，对 `!=`、`NOT IN`、`>`、`<` 等查询无效。
- **数据类型限制**：不支持对 `Tinyint`、`Float`、`Double` 类型的列建立 BloomFilter 索引。
- **基数限制**：对低基数字段加速效果有限。例如“性别”字段只有两种取值，几乎每个数据块都会包含所有值，BloomFilter
无法过滤数据，索引失去意义。
+- **版本限制**：自 4.1.2 版本起，`CHAR` 类型的 BloomFilter 索引不再生效。
## 管理索引
diff --git a/versioned_docs/version-4.x/table-design/index/bloomfilter.md
b/versioned_docs/version-4.x/table-design/index/bloomfilter.md
index 636d6a78ea3..48d973b69d9 100644
--- a/versioned_docs/version-4.x/table-design/index/bloomfilter.md
+++ b/versioned_docs/version-4.x/table-design/index/bloomfilter.md
@@ -58,6 +58,7 @@ The BloomFilter index can accelerate equality queries
(including `=` and `IN`),
- **Query type limitation**: Only effective for `=` and `IN` queries. Not
effective for queries such as `!=`, `NOT IN`, `>`, or `<`.
- **Data type limitation**: Building a BloomFilter index on columns of types
`Tinyint`, `Float`, or `Double` is not supported.
- **Cardinality limitation**: The acceleration effect on low-cardinality
columns is limited. For example, a "gender" column has only two values, so
almost every data block contains all values. The BloomFilter cannot filter
data, and the index becomes meaningless.
+- **Version limitation**: Starting from version 4.1.2, BloomFilter indexes
on `CHAR` type columns no longer take effect.
## Managing Indexes
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