Detailed Analysis of Doris SQL Execution Process: Optimizer, Scheduler, and Executor

This article provides a comprehensive walkthrough of Doris's SQL execution pipeline, covering the query optimizer's parsing, rewriting, and plan generation, the scheduler's fragment distribution, and the executor's fragment processing, including code examples of expression rewrite rules, join strategies, and data flow between FE and BE nodes.

Distributed ExecutionQuery Optimizercode analysis

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Detailed Analysis of Doris SQL Execution Process: Optimizer, Scheduler, and Executor

Alibaba Cloud Developer

Sep 21, 2022 · Databases

How Elastic Multi‑Node Parallel Query Supercharges PolarDB MySQL Performance

This article explains the background, concept, advantages, applicable scenarios, technical implementation, and performance evaluation of Elastic Parallel Query (ePQ) in PolarDB MySQL, showing how multi‑node parallelism leverages idle CPU resources, adaptive scheduling, and cloud‑native architecture to accelerate large‑scale analytical workloads while maintaining HTAP capabilities.

Distributed ExecutionElastic Parallel QueryPolardb

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How Elastic Multi‑Node Parallel Query Supercharges PolarDB MySQL Performance

JD Tech

Aug 10, 2018 · Mobile Development

JMAC: A Cloud‑Based Mobile Automation Testing Platform – Architecture and Core Features

JMAC is a cloud‑based mobile automation testing platform that addresses common challenges such as complex environment setup, low script reusability, and limited device compatibility by providing server‑side script management, distributed task scheduling, real‑device sharing, and detailed result analysis across Android and iOS.

Distributed ExecutionJMACautomation

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JMAC: A Cloud‑Based Mobile Automation Testing Platform – Architecture and Core Features