code: @Override
    public void enableTable(TableName tableName) throws IOException {
      TableName.isLegalFullyQualifiedTableName(tableName.getName());
      if (!tableExists(tableName)) {
        throw new TableNotFoundException(tableName);
      }
      disabledTables.remove(tableName);
      LOG.warn("Table " + tableName + " was enabled in memory only.");
    }
docs: {@inheritDoc}