Description: A Flink savepoint is a manually triggered checkpoint that can be used for state recovery. Unlike automatic checkpoints, which are performed periodically and are part of Flink’s fault tolerance mechanism, savepoints are created by the user at specific moments, allowing for more granular control over the application’s state. Savepoints are particularly useful in situations where updates or changes to processing logic are required, as they allow the application to restart from a known and consistent state. Additionally, savepoints can be used to migrate applications between different versions of Apache Flink or to perform historical data analysis without losing the current state of the application. This feature is fundamental for applications that require high availability and resilience, as it ensures that the application’s state can be reliably restored in the event of failures or interruptions. In summary, savepoints are a powerful tool in the Apache Flink ecosystem, providing flexibility and security in managing the state of real-time data processing applications.
