BigData / Apache StreamPark Interview questions
What is a savepoint, and how does StreamPark use it?
A savepoint is Flink's mechanism for capturing a job's complete state at a point in time, in a self-contained, portable format that can later be used to restart the same job, or a modified version of it, from exactly where it left off.
StreamPark surfaces savepoint creation as a first-class console action: you can trigger one manually from a running job's page without touching a CLI. StreamPark also uses savepoints operationally — for example when a job is intentionally stopped for a code change, restarting from the last savepoint avoids reprocessing or losing data.
This makes savepoints the safe way to do planned maintenance, version upgrades, or configuration changes on a job that's already running in production.
What does a Flink savepoint capture?
How does StreamPark let you trigger a savepoint?
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