FileRelation Contract-spark技术分享

FileRelation

FileRelation is the contract of relations that are backed by files.



package org.apache.spark.sql.execution

trait FileRelation {
  def inputFiles: Array[String]
}

package org.apache.spark.sql.execution

trait FileRelation {

def inputFiles: Array[String]

}

Table 1. FileRelation Contract
Method	Description
`inputFiles`	The list of files that will be read when scanning the relation. Used exclusively when `Dataset` is requested to inputFiles

Table 2. FileRelations
FileRelation	Description
HadoopFsRelation