Troubleshooting refers to the systematic approach to solving problems. Troubleshooting is useful for finding and correcting issues occurring in complex machines, computers, electronics, and software systems.
Apache Flume Troubleshooting- Handling agent Failures
In Apache Flume, if in case the Flume agent goes down, then in such a case all the flows that are hosted on that flume agent are aborted. The flow will resume once the agent restarts.
The flow which is using either the file channel or the other stable channel will start processing flume events from where it left off.
If in case the flume agent cannot be restarted on the same hardware, then in such a case there is an option of migrating the database to the other hardware. And a new Flume agent is set that resumes the processing of the flume events in the database.
In this manner, Flume handles the agent failure.