switched default table format for shark back to orc, as shark does not support parquet yet
switched default table format for shark back to orc, as shark does not support parquet yet

intel-hadoop/Big-Data-Benchmark-for-Big-Bench,XiaominZhang/Big-Data-Benchmark-for-Big-Bench,philjjoon/Big-Data-Benchmark-for-Big-Bench,XiaominZhang/Big-Data-Benchmark-for-Big-Bench,philjjoon/Big-Data-Benchmark-for-Big-Bench,intel-hadoop/Big-Data-Benchmark-for-Big-Bench