[2/2] spark git commit: [SPARK-25438][SQL][TEST] Fix FilterPushdownBenchmark to use the same memory assumption

[SPARK-25438][SQL][TEST] Fix FilterPushdownBenchmark to use the same memory assumption ## What changes were proposed in this pull request? This PR aims to fix three things in `FilterPushdownBenchmark`. **1. Use the same memory assumption.** The following configurations are used in ORC and

[2/2] spark git commit: [SPARK-25438][SQL][TEST] Fix FilterPushdownBenchmark to use the same memory assumption

[SPARK-25438][SQL][TEST] Fix FilterPushdownBenchmark to use the same memory assumption ## What changes were proposed in this pull request? This PR aims to fix three things in `FilterPushdownBenchmark`. **1. Use the same memory assumption.** The following configurations are used in ORC and