Search mode was introduced as an alpha feature in spark integration during CarbonData 1.4.0, its goal was to increase the concurrent query performance. However, after several experiments, it only show very little improvement. The main reason is that SparkSQL is designed based on DAG/MR compute model, thus it is not good at low latency high concurrent queries. A possibly better approach is to provide such query using presto-carbon integration. So, I propose to make this alpha feature obsolete and remove from master code base to reduce the complexity of the overall project.