Merge branch 'apache:dev' into dev

Author: qifanlili

docs/en/connector-v2/sink/CosFile.md

@@ -46,6 +46,7 @@ By default, we use 2PC commit to ensure `exactly-once`
 | file_name_expression                  | string  | no       | "${transactionId}"                         | Only used when custom_filename is true                                                                                                                                 |
 | filename_time_format                  | string  | no       | "yyyy.MM.dd"                               | Only used when custom_filename is true                                                                                                                                 |
 | file_format_type                      | string  | no       | "csv"                                      |                                                                                                                                                                        |
+| filename_extension                    | string  | no       | -                                          | Override the default file name extensions with custom file name extensions. E.g. `.xml`, `.json`, `dat`, `.customtype`                                                 |
 | field_delimiter                       | string  | no       | '\001'                                     | Only used when file_format is text                                                                                                                                     |
 | row_delimiter                         | string  | no       | "\n"                                       | Only used when file_format is text                                                                                                                                     |
 | have_partition                        | boolean | no       | false                                      | Whether you need processing partitions.                                                                                                                                |

docs/en/connector-v2/sink/FtpFile.md

@@ -45,6 +45,7 @@ By default, we use 2PC commit to ensure `exactly-once`
 | file_name_expression                  | string  | no       | "${transactionId}"                         | Only used when custom_filename is true                                                                                                                                 |
 | filename_time_format                  | string  | no       | "yyyy.MM.dd"                               | Only used when custom_filename is true                                                                                                                                 |
 | file_format_type                      | string  | no       | "csv"                                      |                                                                                                                                                                        |
+| filename_extension                    | string  | no       | -                                          | Override the default file name extensions with custom file name extensions. E.g. `.xml`, `.json`, `dat`, `.customtype`                                                 |
 | field_delimiter                       | string  | no       | '\001'                                     | Only used when file_format_type is text                                                                                                                                |
 | row_delimiter                         | string  | no       | "\n"                                       | Only used when file_format_type is text                                                                                                                                |
 | have_partition                        | boolean | no       | false                                      | Whether you need processing partitions.                                                                                                                                |

docs/en/connector-v2/sink/HdfsFile.md

@@ -48,6 +48,7 @@ Output data to hdfs file
 | file_name_expression                  | string  | no       | "${transactionId}"                         | Only used when `custom_filename` is `true`.`file_name_expression` describes the file expression which will be created into the `path`. We can add the variable `${now}` or `${uuid}` in the `file_name_expression`, like `test_${uuid}_${now}`,`${now}` represents the current time, and its format can be defined by specifying the option `filename_time_format`.Please note that, If `is_enable_transaction` is `true`, we will auto add `${transactionId}_` in the head of the file. |
 | filename_time_format                  | string  | no       | "yyyy.MM.dd"                               | Only used when `custom_filename` is `true`.When the format in the `file_name_expression` parameter is `xxxx-${now}` , `filename_time_format` can specify the time format of the path, and the default value is `yyyy.MM.dd` . The commonly used time formats are listed as follows:[y:Year,M:Month,d:Day of month,H:Hour in day (0-23),m:Minute in hour,s:Second in minute]                                                                                                              |
 | file_format_type                      | string  | no       | "csv"                                      | We supported as the following file types:`text` `csv` `parquet` `orc` `json` `excel` `xml` `binary`.Please note that, The final file name will end with the file_format's suffix, the suffix of the text file is `txt`.                                                                                                                                                                                                                                                                  |
+| filename_extension                    | string  | no       | -                                          | Override the default file name extensions with custom file name extensions. E.g. `.xml`, `.json`, `dat`, `.customtype`                                                                                                                                                                                                                                                                                                                                                                   |
 | field_delimiter                       | string  | no       | '\001'                                     | Only used when file_format is text,The separator between columns in a row of data. Only needed by `text` file format.                                                                                                                                                                                                                                                                                                                                                                    |
 | row_delimiter                         | string  | no       | "\n"                                       | Only used when file_format is text,The separator between rows in a file. Only needed by `text` file format.                                                                                                                                                                                                                                                                                                                                                                              |
 | have_partition                        | boolean | no       | false                                      | Whether you need processing partitions.                                                                                                                                                                                                                                                                                                                                                                                                                                                  |