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commit a6c31379333e786172f6a90569d508113d36d84f Author: Rymar Maksym <[email protected]> AuthorDate: Fri Apr 30 15:10:11 2021 +0300 Rename Optiq framework to Calcite --- architecture.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/architecture.html b/architecture.html index 0f51006..963d8b6 100644 --- a/architecture.html +++ b/architecture.html @@ -32,7 +32,7 @@ description: Apache Drill is a low latency distributed query engine for large-sc <img src="{{ site.baseurl }}/images/arc-2.jpg" alt="Drillbit components" width="525"> <p>• RPC end point: Drill exposes a low overhead protobuf-based RPC protocol to communicate with the clients. Additionally, a C++ and Java API layers are also available for the client applications to interact with Drill. Clients can communicate to a specific Drillbit directly or go through a ZooKeeper quorum to discover the available Drillbits before submitting queries. It is recommended that the clients always go through ZooKeeper to shield clients from the intricacies of cluster mana [...] - <p>• SQL parser: Drill uses Optiq, the open source framework, to parse incoming queries. The output of the parser component is a language agnostic, computer-friendly logical plan that represents the query.</p> + <p>• SQL parser: Drill uses Calcite, the open source framework, to parse incoming queries. The output of the parser component is a language agnostic, computer-friendly logical plan that represents the query.</p> <p>• Optimizer: Drill uses various standard database optimizations such as rule based/cost based, as well as data locality and other optimization rules exposed by the storage engine to re-write and split the query. The output of the optimizer is a distributed physical query plan that represents the most efficient and fastest way to execute the query across different nodes in the cluster.</p> <p>• Execution engine: Drill provides a MPP execution engine built to perform distributed query processing across the various nodes in the cluster. </p> <p>• Storage plugin interfaces: Drill serves as a query layer on top of several data sources. Storage plugins in Drill represent the abstractions that Drill uses to interact with the data sources. Storage plugins provide Drill with the following information:</p>
