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Update ex-ug-para-import-command.md #772

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Jul 27, 2021
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Update ex-ug-para-import-command.md #772

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15 changes: 12 additions & 3 deletions docs-2.0/nebula-exchange/parameter-reference/ex-ug-para-import-command.md
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Expand Up @@ -2,9 +2,17 @@

完成配置文件修改后，可以运行以下命令将指定来源的数据导入Nebula Graph数据库。

```bash
<spark_install_path>/bin/spark-submit --master "local" --class com.vesoft.nebula.exchange.Exchange <nebula-exchange-2.x.y.jar_path> -c <csv_application.conf_path>
```
- 首次导入

```bash
<spark_install_path>/bin/spark-submit --master "local" --class com.vesoft.nebula.exchange.Exchange <nebula-exchange-2.x.y.jar_path> -c <csv_application.conf_path>
```

- 二次导入
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定义下二次导入，是首次失败重试，还是第一次导入成功，再导入其它数据。


```bash
<spark_install_path>/bin/spark-submit --master "local" --class com.vesoft.nebula.exchange.Exchange <nebula-exchange-2.x.y.jar_path> -c <csv_application.conf_path> -r "<import_fail_file_path>"
```

!!! note
JAR文件版本号以实际编译得到的JAR文件名称为准。
Expand All @@ -18,3 +26,4 @@
| `-c`  / `--config`  | 是 | 无 | 指定配置文件的路径。 |
| `-h`  / `--hive`  | 否 | `false` | 添加这个参数表示支持从Hive中导入数据。 |
| `-D`  / `--dry`  | 否 | `false` | 添加这个参数表示检查配置文件的格式是否符合要求，但不会校验`tags`和`edges`的配置项是否正确。正式导入数据时不能添加这个参数。 |
|-r / --reload | 否 | 无 | 指定需要重新加载的文件路径。如果之前导入时有一些数据导入失败，会生成导入失败文件，可以用该参数将导入失败文件的数据再次尝试导入。 |