yuchenhuo commented on issue #26957: [WIP][SPARK-30314] Add identifier and 
catalog information to DataSourceV2Relation
URL: https://github.com/apache/spark/pull/26957#issuecomment-568658071
 
 
   @rdblue yes, the intention is just to make the fully resolved name available 
in the V2Relation so in the analysis step richer checks could be performed.
   
   The main reason that I went away from just Seq[String] is that the data 
frame reader seems to support loading from multiple paths at 
https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala#L191.
 In that case, a single Seq[String] would not be able to handle that.
   
   I will be on a vacation in the next two weeks. Will probably need to come 
back to this later.

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