com.hazelcast.spi

## Interface UrgentSystemOperation

- All Known Implementing Classes:
    AbstractCRDTReplicationOperation, PNCounterReplicationOperation

      public interface UrgentSystemOperation

  An Marker interface that signals that an operation is an urgent System Operation.

  System Operations can be executed by the `OperationService` with an urgency. This is important because when a system is under load and its operation queues are filled up, you want the system to deal with system operation like the ones needed for partition-migration, with a high urgency. So that system remains responsive.

  In most cases this interface should not be used by normal user code because illegal usage of this interface, can influence the health of the Hazelcast cluster negatively.

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