private void dumpSidelinedRegions(Map<Path, HbckRegionInfo> regions) {
    for (Map.Entry<Path, HbckRegionInfo> entry : regions.entrySet()) {
      TableName tableName = entry.getValue().getTableName();
      Path path = entry.getKey();
      hbck.getErrors().print("This sidelined region dir should be bulk loaded: " + path.toString());
      hbck.getErrors().print("Bulk load command looks like: " + BulkLoadHFilesTool.NAME + " "
        + path.toUri().getPath() + " " + tableName);
    }
  }
This dumps data in a visually reasonable way for visual debugging
hbase-server/src/main/java/org/apache/hadoop/hbase/util/HbckTableInfo.java