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Merged
StefanieZhao7 merged 2 commits into from
Dec 9, 2024
Merged

Add the best encoding and compression methods #455

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f18cbe9
Add the best encoding and compression methods
W1y1r Dec 6, 2024
8e22905
Supplement the best encoding for the old version
W1y1r Dec 9, 2024
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26 changes: 13 additions & 13 deletions src/UserGuide/Master/Tree/Technical-Insider/Encoding-and-Compression.md
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Original file line number Diff line number Diff line change
Expand Up @@ -78,18 +78,18 @@ The five encodings described in the previous sections are applicable to differen

The correspondence between the data type and its supported encodings is summarized in the Table below.

| Data Type | Supported Encoding |
|:---------:|:-----------------------------------------------------------:|
| BOOLEAN | PLAIN, RLE |
| INT32 | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| DATE | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| INT64 | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| LONG | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| FLOAT | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| DOUBLE | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| TEXT | PLAIN, DICTIONARY |
| STRING | PLAIN, DICTIONARY |
| BLOB | PLAIN, DICTIONARY |
| **Data Type** | **Best Encoding (default)** | **Supported Encoding** |
| ------------- | --------------------------- | ----------------------------------------------------------- |
| BOOLEAN | RLE | PLAIN, RLE |
| INT32 | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| DATE | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| INT64 | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| TIMESTAMP | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| FLOAT | GORILLA | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| DOUBLE | GORILLA | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| TEXT | PLAIN | PLAIN, DICTIONARY |
| STRING | PLAIN | PLAIN, DICTIONARY |
| BLOB | PLAIN | PLAIN |

When the data type specified by the user does not correspond to the encoding method, the system will prompt an error.

Expand All @@ -111,7 +111,7 @@ IoTDB allows you to specify the compression method of the column when creating a

* SNAPPY

* LZ4
* LZ4 (Best compression method)

* GZIP

Expand Down
26 changes: 13 additions & 13 deletions src/UserGuide/latest/Technical-Insider/Encoding-and-Compression.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -78,18 +78,18 @@ The five encodings described in the previous sections are applicable to differen

The correspondence between the data type and its supported encodings is summarized in the Table below.

| Data Type | Supported Encoding |
|:---------:|:-----------------------------------------------------------:|
| BOOLEAN | PLAIN, RLE |
| INT32 | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| DATE | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| INT64 | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| LONG | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| FLOAT | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| DOUBLE | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| TEXT | PLAIN, DICTIONARY |
| STRING | PLAIN, DICTIONARY |
| BLOB | PLAIN, DICTIONARY |
| **Data Type** | **Best Encoding (default)** | **Supported Encoding** |
| ------------- | --------------------------- | ----------------------------------------------------------- |
| BOOLEAN | RLE | PLAIN, RLE |
| INT32 | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| DATE | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| INT64 | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| TIMESTAMP | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| FLOAT | GORILLA | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| DOUBLE | GORILLA | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| TEXT | PLAIN | PLAIN, DICTIONARY |
| STRING | PLAIN | PLAIN, DICTIONARY |
| BLOB | PLAIN | PLAIN |

When the data type specified by the user does not correspond to the encoding method, the system will prompt an error.

Expand All @@ -111,7 +111,7 @@ IoTDB allows you to specify the compression method of the column when creating a

* SNAPPY

* LZ4
* LZ4 (Best compression method)

* GZIP

Expand Down
26 changes: 13 additions & 13 deletions src/zh/UserGuide/Master/Tree/Technical-Insider/Encoding-and-Compression.md
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Original file line number Diff line number Diff line change
Expand Up @@ -77,18 +77,18 @@

前文介绍的五种编码适用于不同的数据类型，若对应关系错误，则无法正确创建时间序列。数据类型与支持其编码的编码方式对应关系总结如下表所示。

| 数据类型 | 支持的编码 |
|:---------:| :---------------------------------------------------------: |
| BOOLEAN | PLAIN, RLE |
| INT32 | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| DATE | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| INT64 | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| TIMESTAMP | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| FLOAT | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| DOUBLE | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| TEXT | PLAIN, DICTIONARY |
| STRING | PLAIN, DICTIONARY |
| BLOB | PLAIN, DICTIONARY |
| **数据类型** | **最佳的编码（默认）** | **支持的编码** |
| ------------ | ---------------------- | ----------------------------------------------------------- |
| BOOLEAN | RLE | PLAIN, RLE |
| INT32 | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| DATE | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| INT64 | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| TIMESTAMP | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| FLOAT | GORILLA | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| DOUBLE | GORILLA | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| TEXT | PLAIN | PLAIN, DICTIONARY |
| STRING | PLAIN | PLAIN, DICTIONARY |
| BLOB | PLAIN | PLAIN |

当用户输入的数据类型与编码方式不对应时，系统会提示错误。如下所示，二阶差分编码不支持布尔类型：

Expand All @@ -107,7 +107,7 @@ IoTDB 允许在创建一个时间序列的时候指定该列的压缩方式。

* UNCOMPRESSED（不压缩）
* SNAPPY 压缩
* LZ4 压缩
* LZ4 压缩（最佳压缩方式）
* GZIP 压缩
* ZSTD 压缩
* LZMA2 压缩
Expand Down
26 changes: 13 additions & 13 deletions src/zh/UserGuide/latest/Technical-Insider/Encoding-and-Compression.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -77,18 +77,18 @@

前文介绍的五种编码适用于不同的数据类型，若对应关系错误，则无法正确创建时间序列。数据类型与支持其编码的编码方式对应关系总结如下表所示。

| 数据类型 | 支持的编码 |
|:---------:| :---------------------------------------------------------: |
| BOOLEAN | PLAIN, RLE |
| INT32 | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| DATE | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| INT64 | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| TIMESTAMP | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| FLOAT | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| DOUBLE | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| TEXT | PLAIN, DICTIONARY |
| STRING | PLAIN, DICTIONARY |
| BLOB | PLAIN, DICTIONARY |
| **数据类型** | **最佳的编码（默认）** | **支持的编码** |
| ------------ | ---------------------- | ----------------------------------------------------------- |
| BOOLEAN | RLE | PLAIN, RLE |
| INT32 | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| DATE | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| INT64 | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| TIMESTAMP | TS_2DIFF | PLAIN, RLE, TS_2DIFF, GORILLA, ZIGZAG, CHIMP, SPRINTZ, RLBE |
| FLOAT | GORILLA | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| DOUBLE | GORILLA | PLAIN, RLE, TS_2DIFF, GORILLA, CHIMP, SPRINTZ, RLBE |
| TEXT | PLAIN | PLAIN, DICTIONARY |
| STRING | PLAIN | PLAIN, DICTIONARY |
| BLOB | PLAIN | PLAIN |

当用户输入的数据类型与编码方式不对应时，系统会提示错误。如下所示，二阶差分编码不支持布尔类型：

Expand All @@ -107,7 +107,7 @@ IoTDB 允许在创建一个时间序列的时候指定该列的压缩方式。

* UNCOMPRESSED（不压缩）
* SNAPPY 压缩
* LZ4 压缩
* LZ4 压缩（最佳压缩方式）
* GZIP 压缩
* ZSTD 压缩
* LZMA2 压缩
Expand Down
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