Github user HyukjinKwon commented on a diff in the pull request: https://github.com/apache/spark/pull/17395#discussion_r107652020 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileFormatWriter.scala --- @@ -292,7 +292,10 @@ object FileFormatWriter extends Logging { override def execute(iter: Iterator[InternalRow]): Set[String] = { var fileCounter = 0 var recordsInFile: Long = 0L - newOutputWriter(fileCounter) + // Skip the empty partition to avoid creating a mass of 'empty' files. + if (iter.hasNext) { + newOutputWriter(fileCounter) --- End diff -- See https://github.com/apache/spark/pull/12855, https://issues.apache.org/jira/browse/SPARK-10216 and https://issues.apache.org/jira/browse/SPARK-15393
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org