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

    https://github.com/apache/spark/pull/14304#discussion_r71844762
  
    --- Diff: 
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetEncodingSuite.scala
 ---
    @@ -78,4 +78,30 @@ class ParquetEncodingSuite extends 
ParquetCompatibilityTest with SharedSQLContex
           }}
         }
       }
    +
    +  test("Read row group containing both dictionary and plain encoded 
pages") {
    +    spark.conf.set("parquet.dictionary.page.size", "2048")
    +    spark.conf.set("parquet.page.size", "4096")
    +
    +    withTempPath { dir =>
    +      // In order to explicitly test for SPARK-14217, we set the parquet 
dictionary and page size
    +      // such that the following data spans across 3 pages (within a 
single row group) where the
    +      // first page is dictionary encoded and the remaining two are plain 
encoded.
    +      val data = (0 until 512).flatMap(i => Seq.fill(3)(i.toString))
    +      data.toDF("f").coalesce(1).write.parquet(dir.getCanonicalPath)
    +      val file =
    +        
SpecificParquetRecordReaderBase.listDirectory(dir).toArray.head.asInstanceOf[String]
    +
    +      val reader = new VectorizedParquetRecordReader
    +      reader.initialize(file, null /* set columns to null to project all 
columns */)
    +      val column = reader.resultBatch().column(0)
    +      assert(reader.nextBatch())
    +
    +      (0 until 512).foreach { i =>
    +        assert(column.getUTF8String(3 * i).toString == i.toString)
    --- End diff --
    
    What about `toInt` as follows:
    
    ```
    assert(column.getUTF8String(3 * i).toInt == i)
    ```


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