CompletableFuture<Void> regionClosing(RegionStateNode regionNode) {
    return transitStateAndUpdate(regionNode, State.CLOSING, STATES_EXPECTED_ON_CLOSING)
      .thenAccept(r -> {
        RegionInfo hri = regionNode.getRegionInfo();
        // Set meta has not initialized early. so people trying to create/edit tables will wait
        if (isMetaRegion(hri)) {
          setMetaAssigned(hri, false);
        }
        // update the operation count metrics
        metrics.incrementOperationCounter();
      });
  }
Resolve a cached {@link RegionInfo} from the encoded region name as a {@code String}.
hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/AssignmentManager.java