vesoft-inc · cooper-lzy · Aug 17, 2023 · Aug 17, 2023
diff --git a/docs-2.0/nebula-exchange/parameter-reference/ex-ug-parameter.md b/docs-2.0/nebula-exchange/parameter-reference/ex-ug-parameter.md
@@ -106,6 +106,8 @@ For different data sources, the vertex configurations are different. There are m
 |`tags.vertex.udf.separator`|string|-|No|Support merging multiple columns by custom rules. This parameter specifies the join character.|
 |`tags.vertex.udf.oldColNames`|list|-|No|Support merging multiple columns by custom rules. This parameter specifies the names of the columns to be merged. Multiple columns are separated by commas.|
 |`tags.vertex.udf.newColName`|string|-|No|Support merging multiple columns by custom rules. This parameter specifies the new column name. |
+|`tags.vertex.prefix`|string|-|No|Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.|
+|`tags.vertex.policy`|string|-|No|Supports only the value `hash`. Performs hashing operations on VIDs of type string.|
 |`tags.batch`|int|`256`|Yes|The maximum number of vertices written into NebulaGraph in a single batch.|
 |`tags.partition`|int|`32`|Yes|The number of Spark partitions.|
 
@@ -251,7 +253,11 @@ For the specific parameters of different data sources for edge configurations, p
 |`edges.fields`|list\[string\]|-|Yes|The header or column name of the column corresponding to properties. If there is a header or column name, please use that name directly. If a CSV file does not have a header, use the form of `[_c0, _c1, _c2]` to represent the first column, the second column, the third column, and so on.|
 |`edges.nebula.fields`|list\[string\]|-|Yes|Edge names defined in NebulaGraph, the order of which must correspond to `edges.fields`. For example, `[_c2, _c3]` corresponds to `[start_year, end_year]`, which means that values in the third column are the values of the start year, and values in the fourth column are the values of the end year.|
 |`edges.source.field`|string|-|Yes|The column of source vertices of edges. For example, `_c0` indicates a value in the first column that is used as the source vertex of an edge.|
+|`edges.source.prefix`|string|-|No|Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.|
+|`edges.source.policy`|string|-|No|Supports only the value `hash`. Performs hashing operations on VIDs of type string.|
 |`edges.target.field`|string|-|Yes|The column of destination vertices of edges. For example, `_c0` indicates a value in the first column that is used as the destination vertex of an edge.|
+|`edges.target.prefix`|string|-|No|Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.|
+|`edges.target.policy`|string|-|No|Supports only the value `hash`. Performs hashing operations on VIDs of type string.|
 |`edges.ranking`|int|-|No|The column of rank values. If not specified, all rank values are `0` by default.|
 |`edges.batch`|int|`256`|Yes|The maximum number of edges written into NebulaGraph in a single batch.|
 |`edges.partition`|int|`32`|Yes|The number of Spark partitions.|

diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-clickhouse.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-clickhouse.md
@@ -167,7 +167,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
-        # policy:hash
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
@@ -245,6 +248,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # In target, use a column in the follow table as the source of the edge's destination vertexes.
@@ -255,6 +262,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # (Optional) Specify a column as the source of the rank.

diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-csv.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-csv.md
@@ -192,7 +192,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
-        # policy:hash
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # The delimiter specified. The default value is comma.
@@ -217,48 +220,20 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
 
     # Set the information about the Tag Team.
     {
-      # Specify the Tag name defined in NebulaGraph.
       name: team
       type: {
-        # Specify the data source file format to CSV.
         source: csv
-
-        # Specify how to import the data into NebulaGraph: Client or SST.
         sink: client
       }
-
-      # Specify the path to the CSV file.
-      # If the file is stored in HDFS, use double quotation marks to enclose the file path, starting with hdfs://. For example: "hdfs://ip:port/xx/xx".
-      # If the file is stored locally, use double quotation marks to enclose the file path, starting with file://. For example: "file:///tmp/xx.csv".
       path: "hdfs://192.168.*.*:9000/data/vertex_team.csv"
-
-      # If the CSV file does not have a header, use [_c0, _c1, _c2, ..., _cn] to represent its header and indicate the columns as the source of the property values.
-      # If the CSV file has headers, use the actual column names.
       fields: [_c1]
-
-      # Specify the column names in the player table in fields, and their corresponding values are specified as properties in the NebulaGraph.
-      # The sequence of fields and nebula.fields must correspond to each other.
       nebula.fields: [name]
-
-      # Specify a column of data in the table as the source of VIDs in the NebulaGraph.
-      # The value of vertex must be the same as the column names in the above fields or csv.fields.
-      # Currently, NebulaGraph {{nebula.release}} supports only strings or integers of VID.
       vertex: {
         field:_c0
-        # policy:hash
       }
-
-      # The delimiter specified. The default value is comma.
       separator: ","
-
-      # If the CSV file has a header, set the header to true.
-      # If the CSV file does not have a header, set the header to false. The default value is false.
       header: false
-
-      # The number of data written to NebulaGraph in a single batch.
       batch: 256
-
-      # The number of Spark partitions.
       partition: 32
     }
 
@@ -302,6 +277,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
       target: {
         field: _c1
@@ -310,6 +289,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # The delimiter specified. The default value is comma.
@@ -335,53 +318,23 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
 
     # Set the information about the Edge Type serve.
     {
-      # Specify the Edge Type name defined in NebulaGraph.
       name: serve
       type: {
-        # Specify the data source file format to CSV.
         source: csv
-
-        # Specify how to import the data into NebulaGraph: Client or SST.
         sink: client
       }
-
-      # Specify the path to the CSV file.
-      # If the file is stored in HDFS, use double quotation marks to enclose the file path, starting with hdfs://. For example: "hdfs://ip:port/xx/xx".
-      # If the file is stored locally, use double quotation marks to enclose the file path, starting with file://. For example: "file:///tmp/xx.csv".
       path: "hdfs://192.168.*.*:9000/data/edge_serve.csv"
-
-      # If the CSV file does not have a header, use [_c0, _c1, _c2, ..., _cn] to represent its header and indicate the columns as the source of the property values.
-      # If the CSV file has headers, use the actual column names.
       fields: [_c2,_c3]
-
-      # Specify the column names in the edge table in fields, and their corresponding values are specified as properties in the NebulaGraph.
-      # The sequence of fields and nebula.fields must correspond to each other.
       nebula.fields: [start_year, end_year]
-
-      # Specify a column as the source for the source and destination vertexes.
-      # The value of vertex must be the same as the column names in the above fields or csv.fields.
-      # Currently, NebulaGraph {{nebula.release}} supports only strings or integers of VID.
       source: {
         field: _c0
       }
       target: {
         field: _c1
       }
-
-      # The delimiter specified. The default value is comma.
       separator: ","
-
-      # Specify a column as the source of the rank (optional).
-      #ranking: _c5
-
-      # If the CSV file has a header, set the header to true.
-      # If the CSV file does not have a header, set the header to false. The default value is false.
       header: false
-
-      # The number of data written to NebulaGraph in a single batch.
       batch: 256
-
-      # The number of Spark partitions.
       partition: 32
     }
 

diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hbase.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hbase.md
@@ -201,6 +201,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
@@ -273,6 +277,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
 
@@ -283,6 +291,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # (Optional) Specify a column as the source of the rank.

diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hive.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-hive.md
@@ -243,6 +243,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
@@ -310,6 +314,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       target: {
@@ -319,6 +327,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # (Optional) Specify a column as the source of the rank.

diff --git a/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-jdbc.md b/docs-2.0/nebula-exchange/use-exchange/ex-ug-import-from-jdbc.md
@@ -232,6 +232,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
@@ -329,6 +333,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       target: {
@@ -338,6 +346,10 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       #            oldColNames:[field-0,field-1,field-2]
       #            newColName:new-field
       #        }
+      # Add the specified prefix to the VID. For example, if the VID is `12345`, adding the prefix `tag1` will result in `tag1_12345`. The underscore cannot be modified.
+      # prefix:"tag1"
+      # Performs hashing operations on VIDs of type string.
+      # policy:hash
       }
 
       # (Optional) Specify a column as the source of the rank.