Fix line too long

Author: Andrew Or

core/src/main/scala/org/apache/spark/rdd/RDD.scala

@@ -1211,9 +1211,9 @@ abstract class RDD[T: ClassTag](
         // greater than totalParts because we actually cap it at totalParts in runJob.
         var numPartsToTry = 1
         if (partsScanned > 0) {
-          // If we didn't find any rows after the previous iteration, quadruple and retry. Otherwise,
-          // interpolate the number of partitions we need to try, but overestimate it by 50%.
-          // We also cap the estimation in the end.
+          // If we didn't find any rows after the previous iteration, quadruple and retry.
+          // Otherwise, interpolate the number of partitions we need to try, but overestimate
+          // it by 50%. We also cap the estimation in the end.
           if (buf.size == 0) {
             numPartsToTry = partsScanned * 4
           } else {