public void deleteOffsetFile(File storeDir) {
    deleteOffsetFile(storeDir, OFFSET_FILE_NAME_NEW);
    deleteOffsetFile(storeDir, OFFSET_FILE_NAME_LEGACY);
  }
Delete the offset file for this store, if one exists.
@param storeDir the directory of the store
samza-core/src/main/java/org/apache/samza/storage/StorageManagerUtil.java