Github user sraghunandan commented on a diff in the pull request: https://github.com/apache/carbondata/pull/2568#discussion_r207430412 --- Diff: integration/presto/performance-report-of-presto-with-carbon.md --- @@ -0,0 +1,27 @@ +<!-- + Licensed to the Apache Software Foundation (ASF) under one or more + contributor license agreements. See the NOTICE file distributed with + this work for additional information regarding copyright ownership. + The ASF licenses this file to you under the Apache License, Version 2.0 + (the "License"); you may not use this file except in compliance with + the License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. +--> + +# Performance Report Of Presto combined with Carbondata +Presto is a MPP (Massively Parallel Processing) tool designed to efficiently query vast amounts of data using distributed queries. Presto can be and has been extended to operate over different kinds of data sources including traditional relational databases and other data sources such as Cassandra. It is capable of handling data warehousing and analytics: data analysis, aggregating large amounts of data and producing reports. These workloads are often classified as Online Analytical Processing (OLAP). + +On the other side, Apache Spark is a lightning-fast cluster computing technology, designed for fast computation. It is based on Hadoop MapReduce and it extends the MapReduce model to efficiently use it for more types of computations, which includes interactive queries and stream processing. The main feature of Spark is its in-memory cluster computing that increases the processing speed of an application. + +While dealing with Carbondata, both of them have their own advantage but presto is far better than spark while executing 90% of the queries. As the Presto-carbon vector readers are much optimized and reduces the table scan time dealing with large table. Even in case of dictionary aggregation and multiple table join, presto performs much better due to its own optimised way of dealing with properties. --- End diff -- remove the work far better.
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