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- Note When you use tasks sets, all the tasks in the set must all be configured to use Elastic Load Balancing or to not use Elastic Load Balancing.
- Important Tasks that are stopped after they reach the
RUNNINGstate don't start the throttle logic or the associated service event message. For example, assume that failed Elastic Load Balancing health checks for a service cause a task to be flagged as unhealthy, and Amazon ECS deregisters it and stops the task. At this point, the tasks aren't throttled. Even if a task's container command immediately exits with a non-zero exit code, the task already moved to the
RUNNINGstate. Tasks that fail immediately because command errors don't cause the throttle or the service event message.