Github user jiangxb1987 commented on a diff in the pull request: https://github.com/apache/spark/pull/22723#discussion_r229717581 --- Diff: core/src/main/scala/org/apache/spark/input/WholeTextFileInputFormat.scala --- @@ -48,11 +50,11 @@ private[spark] class WholeTextFileInputFormat * Allow minPartitions set by end-user in order to keep compatibility with old Hadoop API, * which is set through setMaxSplitSize */ - def setMinPartitions(context: JobContext, minPartitions: Int) { + def setMinPartitions(sc: SparkContext, context: JobContext, minPartitions: Int) { val files = listStatus(context).asScala val totalLen = files.map(file => if (file.isDirectory) 0L else file.getLen).sum - val maxSplitSize = Math.ceil(totalLen * 1.0 / - (if (minPartitions == 0) 1 else minPartitions)).toLong + val minPartNum = Math.max(sc.defaultParallelism, minPartitions) --- End diff -- This is potentially a behavior change. cc @cloud-fan
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