CreatableRelationProvider Contract — Data Sources That Write Rows Differently Per Save Mode

CreatableRelationProvider is the abstraction of data source providers that can write the rows of a structured query (a DataFrame) differently per save mode.

Table 1. CreatableRelationProvider Contract
Method Description

createRelation

 
createRelation(
  sqlContext: SQLContext,
  mode: SaveMode,
  parameters: Map[String, String],
  data: DataFrame): BaseRelation

Creates a BaseRelation that represents the rows of a structured query (a DataFrame) saved to an external data source (per SaveMode)

The save mode specifies what should happen when the target relation (destination) already exists.

Used when:
Table 2. CreatableRelationProviders
CreatableRelationProvider Description

ConsoleSinkProvider

Data source provider for Console data source

JdbcRelationProvider

Data source provider for JDBC data source

KafkaSourceProvider

Data source provider for Kafka data source

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