Github user vanzin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/15382#discussion_r83485770
  
    --- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala ---
    @@ -757,7 +758,10 @@ private[sql] class SQLConf extends Serializable with 
CatalystConf with Logging {
     
       def variableSubstituteDepth: Int = getConf(VARIABLE_SUBSTITUTE_DEPTH)
     
    -  def warehousePath: String = new Path(getConf(WAREHOUSE_PATH)).toString
    +  def warehousePath: String = {
    +    val path = new Path(getConf(WAREHOUSE_PATH))
    +    FileSystem.get(path.toUri, new 
Configuration()).makeQualified(path).toString
    --- End diff --
    
    Can we split the difference here and treat those two as different issues?
    
    - for this bug, let's hardcode `.transform(new File(_).toURI().toString())` 
into the config constant definition; that's on par with the previous version of 
this code modified in 11a6844beb, which hardcoded the `file:` scheme into the 
default value.
    
    - separately, if it's a real issue, let's make changes to make this support 
non-local directories.
    
    That way we fix the immediate issue and can have more discussions about how 
to properly solve the other and maybe even fix `resolveURI`.


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