code: public boolean columnValueIsBinary(String namespace, String storeName) {
          Boolean cachedValue = getCachedValueIsBinary(namespace, storeName);
          if(cachedValue != null) return cachedValue.booleanValue();
          
          String cqlKeyspace = CQLService.storeToCQLName(namespace);
          String tableName = CQLService.storeToCQLName(storeName);
          KeyspaceMetadata ksMetadata = m_cluster.getMetadata().getKeyspace(cqlKeyspace);
          TableMetadata tableMetadata = ksMetadata.getTable(tableName);
          ColumnMetadata colMetadata = tableMetadata.getColumn("value");
          boolean isBinary = colMetadata.getType().equals(DataType.blob());
          
          putCachedValueIsBinary(namespace, storeName, isBinary);
          return isBinary;
      }
docs: Return true if column values for the given namespace/store name are binary.
  
  @param namespace Namespace (Keyspace) name.
  @param storeName Store (ColumnFamily) name.
  @return          True if the given table's column values are binary.