make test_sstable_single_exist test_sstable_single_scan test_sstable_single_get test_sstable_multi_get test_sstable_multi_scan test_sstable_multi_exist -j6
./test_sstable_single_exist
./test_sstable_single_scan
./test_sstable_single_get
./test_sstable_multi_get
./test_sstable_multi_scan
./test_sstable_multi_exist