exchange supports filter (#467)

docs-2.0-en/import-export/nebula-exchange/parameter-reference/ex-ug-parameter.md

@@ -163,6 +163,8 @@ For different data sources, the vertex configurations are different. There are m
 |`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 partitions to be created when the data is written to {{nebula.name}}. If `tags.partition ≤ 1`, the number of partitions to be created in {{nebula.name}} is the same as that in the data source.|
+|`tags.filter`|string|-|No|The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}. For information about filtering formats, see [Dataset](https://spark.apache.org/docs/latest/api/scala/org/apache/spark/sql/Dataset.html#filter(conditionExpr:String):org.apache.spark.sql.Dataset[T]).|
+
 
 #### Specific parameters of Parquet/JSON/ORC data sources
 
@@ -303,6 +305,7 @@ For the specific parameters of different data sources for edge configurations, p
 |`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 partitions to be created when the data is written to {{nebula.name}}. If `edges.partition ≤ 1`, the number of partitions to be created in {{nebula.name}} is the same as that in the data source.|
+|`edges.filter`|string|-|No|The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}. For information about filtering formats, see [Dataset](https://spark.apache.org/docs/latest/api/scala/org/apache/spark/sql/Dataset.html#filter(conditionExpr:String):org.apache.spark.sql.Dataset[T]).|
 
 #### Specific parameters for generating SST files
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-clickhouse.md

@@ -178,6 +178,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -276,6 +279,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # (Optional) Specify a column as the source of the rank.
       #ranking: rank
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-csv.md

@@ -207,6 +207,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If the CSV file does not have a header, set the header to false. The default value is false.
       header: false
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -308,6 +311,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If the CSV file does not have a header, set the header to false. The default value is false.
       header: false
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-hbase.md

@@ -212,6 +212,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -305,6 +308,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # (Optional) Specify a column as the source of the rank.
       #ranking: rank
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-hive.md

@@ -254,6 +254,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -341,6 +344,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # (Optional) Specify a column as the source of the rank.
       #ranking: rank
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-jdbc.md

@@ -243,6 +243,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -360,6 +363,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # (Optional) Specify a column as the source of the rank.
       #ranking: rank
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-json.md

@@ -230,6 +230,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -322,6 +325,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # (Optional) Specify a column as the source of the rank.
       #ranking: rank
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-kafka.md

@@ -203,6 +203,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-maxcompute.md

@@ -188,6 +188,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -300,6 +303,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # (Optional) Specify a column as the source of the rank.
       #ranking: rank
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-mysql.md

@@ -232,6 +232,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-neo4j.md

@@ -201,6 +201,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-oracle.md

@@ -227,6 +227,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -333,6 +336,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # (Optional) Specify a column as the source of the rank.
       #ranking: rank
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-orc.md

@@ -195,6 +195,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-parquet.md

@@ -196,6 +196,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -287,6 +290,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # (Optional) Specify a column as the source of the rank.
       #ranking: rank
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-pulsar.md

@@ -180,6 +180,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # policy:hash
       }
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -280,6 +283,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # (Optional) Specify a column as the source of the rank.
       #ranking: rank
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-en/import-export/nebula-exchange/use-exchange/ex-ug-import-from-sst.md

@@ -284,6 +284,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If the CSV file does not have a header, set the header to false. The default value is false.
       header: false
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 
@@ -373,6 +376,9 @@ After Exchange is compiled, copy the conf file `target/classes/application.conf`
       # If the CSV file does not have a header, set the header to false. The default value is false.
       header: false
 
+      # The filtering rule. The data that matches the filter rule is imported into {{nebula.name}}.
+      # filter: "name='Tom'"
+
       # Batch operation types, including INSERT, UPDATE, and DELETE. defaults to INSERT.
       #writeMode: INSERT
 

docs-2.0-zh/import-export/nebula-exchange/parameter-reference/ex-ug-parameter.md

@@ -163,8 +163,10 @@ check: the real password decrypted by private key and encrypted password is: neb
 |`tags.vertex.udf.newColName`|string|-|否|通过自定义规则合并多列，该参数指定新列的列名。|
 |`tags.vertex.prefix`|string|-|否|为 VID 增加指定的前缀。例如 VID 为`12345`，增加前缀`tag1`后为`tag1_12345`。下划线无法修改。|
 |`tags.vertex.policy`|string|-|否|仅支持取值`hash`。对 string 类型的 VID 进行哈希化操作。|
-|`tags.batch`|int|`256`|是|单批次写入 {{nebula.name}} 的最大点数量。|
-|`tags.partition`|int|`32`|是|数据写入 {{nebula.name}} 时需要创建的分区数。如果`tags.partition ≤ 1`，在 {{nebula.name}} 中创建的分区数和数据源的分区数相同。|
+|`tags.batch`|int|`256`|是|单批次写入{{nebula.name}}的最大点数量。|
+|`tags.partition`|int|`32`|是|数据写入{{nebula.name}}时需要创建的分区数。如果`tags.partition ≤ 1`，在{{nebula.name}}中创建的分区数和数据源的分区数相同。|
+|`tags.filter`|string|-|否|过滤规则。符合过滤规则的数据会被导入{{nebula.name}}。格式请参见[Dataset](https://spark.apache.org/docs/latest/api/scala/org/apache/spark/sql/Dataset.html#filter(conditionExpr:String):org.apache.spark.sql.Dataset[T])。|
+
 
 #### Parquet/JSON/ORC 源特有参数
 
@@ -304,8 +306,10 @@ check: the real password decrypted by private key and encrypted password is: neb
 |`edges.target.prefix`|string|-|否|为 VID 增加指定的前缀。例如 VID 为`12345`，增加前缀`tag1`后为`tag1_12345`。下划线无法修改。|
 |`edges.target.policy`|string|-|否|仅支持取值`hash`。对 string 类型的 VID 进行哈希化操作。|
 |`edges.ranking`|int|-|否|rank 值的列。没有指定时，默认所有 rank 值为`0`。|
-|`edges.batch`|int|`256`|是|单批次写入 {{nebula.name}} 的最大边数量。|
-|`edges.partition`|int|`32`|是|数据写入 {{nebula.name}} 时需要创建的分区数。如果`edges.partition ≤ 1`，在 {{nebula.name}} 中创建的分区数和数据源的分区数相同。|
+|`edges.batch`|int|`256`|是|单批次写入{{nebula.name}}的最大边数量。|
+|`edges.partition`|int|`32`|是|数据写入{{nebula.name}}时需要创建的分区数。如果`edges.partition ≤ 1`，在{{nebula.name}}中创建的分区数和数据源的分区数相同。|
+|`edges.filter`|string|-|否|过滤规则。符合过滤规则的数据会被导入{{nebula.name}}。格式请参见[Dataset](https://spark.apache.org/docs/latest/api/scala/org/apache/spark/sql/Dataset.html#filter(conditionExpr:String):org.apache.spark.sql.Dataset[T])。|
+
 
 #### 生成 SST 时的特有参数
 

docs-2.0-zh/import-export/nebula-exchange/use-exchange/ex-ug-import-from-clickhouse.md

@@ -179,6 +179,9 @@
       # policy:hash
       }
 
+      # 过滤规则。符合过滤规则的数据会被导入{{nebula.name}}。
+      # filter: "name='Tom'"
+
       # 批量操作类型，包括 INSERT、UPDATE 和 DELETE。默认为 INSERT。
       #writeMode: INSERT
 
@@ -281,6 +284,9 @@
       # 指定一个列作为 rank 的源（可选）。
       #ranking: rank
 
+      # 过滤规则。符合过滤规则的数据会被导入{{nebula.name}}。
+      # filter: "name='Tom'"
+
       # 批量操作类型，包括 INSERT、UPDATE 和 DELETE。默认为 INSERT。
       #writeMode: INSERT
 

docs-2.0-zh/import-export/nebula-exchange/use-exchange/ex-ug-import-from-csv.md

@@ -206,6 +206,9 @@
       # 如果 CSV 文件没有表头，请将 header 设置为 false。默认值为 false。
       header: false
 
+      # 过滤规则。符合过滤规则的数据会被导入{{nebula.name}}。
+      # filter: "name='Tom'"
+
       # 批量操作类型，包括 INSERT、UPDATE 和 DELETE。默认为 INSERT。
       #writeMode: INSERT
 
@@ -305,6 +308,9 @@
       # 如果 CSV 文件没有表头，请将 header 设置为 false。默认值为 false。
       header: false
 
+      # 过滤规则。符合过滤规则的数据会被导入{{nebula.name}}。
+      # filter: "name='Tom'"
+
       # 批量操作类型，包括 INSERT、UPDATE 和 DELETE。默认为 INSERT。
       #writeMode: INSERT
 

docs-2.0-zh/import-export/nebula-exchange/use-exchange/ex-ug-import-from-hbase.md

@@ -210,6 +210,9 @@ ROW                                COLUMN+CELL
       # policy:hash
       }
 
+      # 过滤规则。符合过滤规则的数据会被导入{{nebula.name}}。
+      # filter: "name='Tom'"
+
       # 批量操作类型，包括 INSERT、UPDATE 和 DELETE。默认为 INSERT。
       #writeMode: INSERT
 
@@ -302,6 +305,9 @@ ROW                                COLUMN+CELL
       # 指定一个列作为 rank 的源（可选）。
       #ranking: rank
 
+      # 过滤规则。符合过滤规则的数据会被导入{{nebula.name}}。
+      # filter: "name='Tom'"
+
       # 批量操作类型，包括 INSERT、UPDATE 和 DELETE。默认为 INSERT。
       #writeMode: INSERT
 

docs-2.0-zh/import-export/nebula-exchange/use-exchange/ex-ug-import-from-hive.md

@@ -249,6 +249,9 @@ scala> sql("select playerid, teamid, start_year, end_year from basketball.serve"
       # policy:hash
       }
 
+      # 过滤规则。符合过滤规则的数据会被导入{{nebula.name}}。
+      # filter: "name='Tom'"
+
       # 批量操作类型，包括 INSERT、UPDATE 和 DELETE。默认为 INSERT。
       #writeMode: INSERT
 
@@ -336,6 +339,9 @@ scala> sql("select playerid, teamid, start_year, end_year from basketball.serve"
       # 指定一个列作为 rank 的源（可选）。
       #ranking: rank
 
+      # 过滤规则。符合过滤规则的数据会被导入{{nebula.name}}。
+      # filter: "name='Tom'"
+
       # 批量操作类型，包括 INSERT、UPDATE 和 DELETE。默认为 INSERT。
       #writeMode: INSERT