Details
-
Improvement
-
Status: Resolved
-
Major
-
Resolution: Fixed
-
0.15.0
-
None
Description
In execution environments such as Gobblin-on-Yarn, where Gobblin workers can be re-assigned when the worker dies or is killed, it is useful to add a mode where each Gobblin task running inside a Gobblin worker can perform application-level health checks and report results of the health checks back to the worker hosting the tasks. The worker on receiving a health check failure event can be configured to exit the JVM. In the case of Gobblin-on-Yarn mode, this will result in the worker getting re-assigned to a different node. The proposed behavior is similar in flavor to speculative execution modes provided in other execution frameworks such as MapReduce.
This change also provides an example of such an application-level health check that arises in the case of Kafka ingestion.
