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[SPARK-12598][Core] bug in setMinPartitions #10546

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[SPARK-12598][Core] bug in setMinPartitions #10546

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5 changes: 2 additions & 3 deletions core/src/main/scala/org/apache/spark/input/PortableDataStream.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -41,9 +41,8 @@ private[spark] abstract class StreamFileInputFormat[T]
* which is set through setMaxSplitSize
*/
def setMinPartitions(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 / files.size).toLong
val totalLen = listStatus(context).asScala.filterNot(_.isDirectory).map(_.getLen).sum
val maxSplitSize = math.ceil(totalLen / math.max(minPartitions, 1.0)).toLong
super.setMaxSplitSize(maxSplitSize)
}

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