[GitHub] spark pull request: [SPARK-11102] [SQL] Uninformative exception wh...

[zjffdu <gi...@git.apache.org>]

Github user zjffdu commented on the pull request:

    https://github.com/apache/spark/pull/9223#issuecomment-153972020
  
    @chenghao-intel  The JsonRelation has another special case that it allow input paths as empty when it takes RDD[String] as input. So HadoopFsRelation can not assume all its sub classes must have non-empty input paths.  Maybe need to add another flag "allowEmptyInputPaths" in HadoopFsRelation and allow its implementation to decide that. 


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