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

    https://github.com/apache/spark/pull/1346#discussion_r15511453
  
    --- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/parquet/ParquetTypes.scala ---
    @@ -116,7 +116,7 @@ private[parquet] object ParquetTypesConverter extends 
Logging {
             case ParquetOriginalType.LIST => { // TODO: check enums!
               assert(groupType.getFieldCount == 1)
               val field = groupType.getFields.apply(0)
    -          new ArrayType(toDataType(field))
    +          ArrayType(toDataType(field), false)
    --- End diff --
    
    for boolean argument, make them named argument. e.g. 
    ```scala
    ArrayType(toDataType(field), nullable = false)  // maybe it was containsNull
    ```


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