@Override
  public <V extends OperationResult> void recordEnd(String opId, V result, Throwable exception) {
    OperationState<ClusterManagementOperation<OperationResult>, OperationResult> operationState =
        region.get(opId);
    operationState.setOperationEnd(new Date(), result, exception);
    region.put(opId, operationState);
  }
This store uses a geode region to implement the storage of operation state.
It is a REPLICATE region so that the storage will be shared on each member
that hosts this region. Currently each locator hosts this region.
geode-core/src/main/java/org/apache/geode/management/internal/operation/RegionOperationStateStore.java