GitHub user WeichenXu123 opened a pull request: https://github.com/apache/spark/pull/20088
[SPARK-22905][ML][MLLIB][CORE] Fix ChiSqSelectorModel save implementation ## What changes were proposed in this pull request? Currently, in `ChiSqSelectorModel`, save: spark.createDataFrame(dataArray).repartition(1).write... The default partition number used by createDataFrame is "defaultParallelism", Current RoundRobinPartitioning won't guarantee the "repartition" generating the same order result with local array. We need fix it. ## How was this patch tested? N/A You can merge this pull request into a Git repository by running: $ git pull https://github.com/WeichenXu123/spark fix_chisq_model_save Alternatively you can review and apply these changes as the patch at: https://github.com/apache/spark/pull/20088.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #20088 ---- commit 5fd56c350cb410740209fba32c19489847a1d019 Author: WeichenXu <weichen.xu@...> Date: 2017-12-27T04:31:25Z init pr ---- --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org