@Override
  public <A extends ClusterManagementOperation<?>> String recordStart(A operation, String locator) {
    String opId = uniqueIdSupplier.get();

    OperationState operationInstance = new OperationState(opId, operation, new Date());
    operationInstance.setLocator(locator);

    region.put(opId, operationInstance);

    return opId;
  }
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