Troubleshooting Changelog Modes | Apache Flink® SQL
Get started: https://cnfl.io/apache-flink-sql-modu... | Changelog modes are central to how Apache Flink® SQL works internally, and they can have an enormous effect on the behavior, cost, and performance of your queries.
This video explains how changelogs are handled by Flink SQL, the impact on your queries, how to handle errors you might see, and some best practices.
For more information, check out the related resources on Confluent Developer.
RELATED RESOURCES
► Changelog processing and troubleshooting errors about change updates - https://cnfl.io/41fHAzN
► Intro to Flink SQL - • Intro to Flink SQL | Apache Flink 101
► The Flink Runtime - • The Flink Runtime | Apache Flink 101
CHAPTERS
00:00 - Intro
01:38 - Stream-table duality
03:29 - Changelog modes
06:07 - Errors related to changelog modes
08:10 - Use CREATE TABLE AS
08:43 - Avoid updating streams (if you can)
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