code: private Map<String, String> readExistingLocks(HLock lock, String lockName) {
      // logger.debug("Started reading existing columns");
      SliceQuery<String, String, String> sliceQuery = HFactory
          .createSliceQuery(keyspace, StringSerializer.get(), StringSerializer.get(), StringSerializer.get())
          .setColumnFamily(lockManagerConfigurator.getLockManagerCF()).setKey(lock.getPath());
  
      sliceQuery.setColumnNames(lockName);
  
      QueryResult<ColumnSlice<String, String>> queryResult = sliceQuery.execute();
  
      // logger.debug("Finished reading existing columns");
      return getResults(queryResult);
  
    }
docs: Reads all existing locks for this lock path
  
  @param lockPath
  a lock path
  @return a list of locks waiting on this lockpath