cleanFilesWithHeader

It will remove all files in the directory whose name starts with fileHeader. Some data type should be only saved with one latest version. Hence when a new version of data comes in, we should delete the old version data files if exists. Since the file name was generated based on pk value, delete files whose name starts with fileHeader will remove old version data files. For example, if fileHeader is 202_19, then 202_19_05 and 202_19_07 will be deleted.

Parameters