Cloudera Impala is an open-source under Apache Licence enable real-time, interactive analytical SQL queries of the data stored in HBase or HDFS. The work was inspired by Google Dremel paper which is also the basis for Google BigQuery. It provide access same unified storage platform base on it's own distributed query engine but does not use mapreduce. In addition, it use also the same metadata, SQL syntax (HiveQL-like) ODBC driver and user interface (Hue Beeswax) as Hive. Besides the traditional Hadoop approach, aim to provide low-cost solution for resiliency and batch-oriented distributed data processing, we found more and more effort in the Big Data world pursuing the right solution for ad-hoc, fast queries and realtime data processing for large datasets. In this presentation, we'll explore how to run interactive queries inside Impala, advantages of the approach, architecture and understand how it optimizes data systems including also practical performance analysis.