Book Image

Learn Azure Synapse Data Explorer

By : Pericles (Peri) Rocha
Book Image

Learn Azure Synapse Data Explorer

By: Pericles (Peri) Rocha

Overview of this book

Large volumes of data are generated daily from applications, websites, IoT devices, and other free-text, semi-structured data sources. Azure Synapse Data Explorer helps you collect, store, and analyze such data, and work with other analytical engines, such as Apache Spark, to develop advanced data science projects and maximize the value you extract from data. This book offers a comprehensive view of Azure Synapse Data Explorer, exploring not only the core scenarios of Data Explorer but also how it integrates within Azure Synapse. From data ingestion to data visualization and advanced analytics, you’ll learn to take an end-to-end approach to maximize the value of unstructured data and drive powerful insights using data science capabilities. With real-world usage scenarios, you’ll discover how to identify key projects where Azure Synapse Data Explorer can help you achieve your business goals. Throughout the chapters, you'll also find out how to manage big data as part of a software as a service (SaaS) platform, as well as tune, secure, and serve data to end users. By the end of this book, you’ll have mastered the big data life cycle and you'll be able to implement advanced analytical scenarios from raw telemetry and log data.
Table of Contents (19 chapters)
1
Part 1 Introduction to Azure Synapse Data Explorer
6
Part 2 Working with Data
12
Part 3 Managing Azure Synapse Data Explorer

Monitoring your environment

Azure Synapse Data Explorer offers a series of control commands that you can use to check for system status, ongoing queries, past operations, and more.

Note

All code examples in this chapter can be found in the Chapter 10\System Monitoring.kql file of the book repository.

The following examples will walk you through checking and adjusting the capacity of your Data Explorer pool, monitoring query execution, and reviewing the history of metadata changes in database objects.

Checking your Data Explorer pool capacity

If you are experiencing long execution times when executing queries or data ingestion jobs, the first step to take is to look at the overall system usage. The easiest way to check this is by running the .show capacity command. Simply open a new Kusto Query Language (KQL) script in Azure Synapse Studio and run the following command:

.show capacity

This command produces a result similar to what’s illustrated in Figure...