question: generate the offset based on file index and offset within single file concode_field_sep HdfsReaderFactory.ReaderType readerType concode_elem_sep String curSingleFileOffset concode_elem_sep SingleFileHdfsReader curReader concode_elem_sep int curFileIndex concode_elem_sep Logger LOG concode_elem_sep int numRetries concode_elem_sep SystemStreamPartition systemStreamPartition concode_elem_sep int numMaxRetries concode_elem_sep List<String> filePaths concode_elem_sep String DELIMITER concode_field_sep void init concode_elem_sep void reconnect concode_elem_sep void reconnect concode_elem_sep String getCurSingleFileOffset concode_elem_sep int getCurFileIndex concode_elem_sep boolean hasNext concode_elem_sep SystemStreamPartition getSystemStreamPartition concode_elem_sep String getCurOffset concode_elem_sep void close concode_elem_sep IncomingMessageEnvelope readNext
target: String function ( int arg0 , String arg1 ) { return arg0 + DELIMITER + arg1 ; }