public Map<byte[], List<HStoreFile>> close(boolean abort, boolean ignoreStatus)
    throws IOException {
    return close(abort, ignoreStatus, false);
  }
Close this HRegion.
@param abort        true if server is aborting (only during testing)
@param ignoreStatus true if ignore the status (won't be showed on task list)
@return Vector of all the storage files that the HRegion's component HStores make use of. It's
        a list of StoreFile objects. Can be null if we are not to close at this time, or we are
        already closed.
@throws IOException              e
@throws DroppedSnapshotException Thrown when replay of wal is required because a Snapshot was
                                 not properly persisted. The region is put in closing mode, and
                                 the caller MUST abort after this.
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java