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Endigest AI Core Summary
Grab implemented Shadow Testing in its Flink deployment pipeline to eliminate downtime from production deployment failures.
•A new application version is deployed in parallel with the current version using isShadow=true environment variable and distinct jobID, with results directed to isolated sinks that don't interfere with Main application.
•Shadow application runs for 1 hour to reach steady state, with job manager status monitored; users can leverage observability stack to compare metrics between Main and Shadow applications.
•Connectors dynamically configure based on isShadow variable: Kafka sources use -shadow suffixed consumer groups, Debezium shifts Server ID ranges, and sinks write to dedicated shadow resources like separate Kafka clusters and S3 buckets.
•Main application deployment follows successful Shadow Testing, with 10-minute observation period; pipeline automatically rolls back if unhealthy, eliminating the previous downtime window.
This summary was automatically generated by AI based on the original article and may not be fully accurate.
Grab
Kubernetes
Grafana