Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/20727#discussion_r172361020 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/HadoopFileLinesReader.scala --- @@ -30,9 +30,19 @@ import org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl /** * An adaptor from a [[PartitionedFile]] to an [[Iterator]] of [[Text]], which are all of the lines * in that file. + * + * @param file A part (i.e. "block") of a single file that should be read line by line. + * @param lineSeparator A line separator that should be used for each line. If the value is `\n`, + * it covers `\r`, `\r\n` and `\n`. + * @param conf Hadoop configuration */ class HadoopFileLinesReader( - file: PartitionedFile, conf: Configuration) extends Iterator[Text] with Closeable { + file: PartitionedFile, + lineSeparator: String, --- End diff -- I would suggest to use `String` here and control the encoding stuff in one place here. For option thing, see https://github.com/apache/spark/pull/20727#discussion_r172360489. Will bring it back.
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