Hi. I have a job that takes ~50min with Spark 0.9.3 and ~1.8hrs on Spark 1.3.1 on the same cluster.
The only code difference between the two code bases is to fix the Seq -> Iter changes that happened in the Spark 1.x series. Are there any other changes in the defaults from spark 0.9.3 -> 1.3.1 that would cause such a large degradation in performance? Changes in partitioning algorithms, scheduling etc? shay
