jokerCoCo opened a new issue, #1970:
URL: https://github.com/apache/incubator-hugegraph/issues/1970

   ### Problem Type (问题类型)
   
   _No response_
   
   ### Before submit
   
   - [X] 我已经确认现有的 [Issues](https://github.com/hugegraph/hugegraph/issues) 与 
[FAQ](https://hugegraph.github.io/hugegraph-doc/guides/faq.html) 中没有相同 / 重复问题
   
   ### Environment (环境信息)
   
   - Server Version: v0.12.x
   - Backend: RocksDB 1 nodes, HDD or SSD 
   - OS: xx CPUs, xx G RAM, Centos 7.x 
   - Data Size:  xx vertices, xx edges <!-- (like 1000W 点, 9000W 边) -->
   
   
   ### Your Question (问题描述)
   
   例如person由[name,id]联合构成主键,那么在写json配置文件时边该怎么映射?我的映射如下面写的。其中我没有给边设置任何属性
   `{
                       "label": "edge1",
                       "skip": false,
                       "source": [
                           "school"
                       ],
                       "unfold_source": false,
                       "target": [
                           "name",
                           "id"
                       ],
                       "unfold_target": false,
                       "field_mapping": {
                           "school": "school",
                           "name": "name",
                           "id": "id"
                       },
                       "value_mapping": {
                           
                       },
                       "selected": [
                           
                       ],
                       "ignored": [
                           
                       ],
                       "null_values": [
                           "",
                           "NULL",
                           "null"
                       ],
                       "update_strategies": {
                           
                       }
                   }`
   
   ### Vertex/Edge example (问题点 / 边数据举例)
   
   _No response_
   
   ### Schema [VertexLabel, EdgeLabel, IndexLabel] (元数据结构)
   
   _No response_


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