Patent ID: 9646011
Date: 2017-05-09
CPC Classifications: G06F

Claim:
1. A method for performing stream processing, comprising: executing a stream processing program on a computer system that receives a chunk of data that includes a conversion target UNIX Time (UT) value; obtaining a UT value of a reference time from the stream processing program; computing intermediate data, comprising a year, month, day, hour, minute, and second corresponding to the UT value of the reference time; computing a difference between the conversion target UT value and the UT value of the reference time using a processor; computing values for an hour, minute, and second corresponding to a size of the difference between the UT values; generating a character string representing a year, month, day, hour, minute, and second corresponding to the conversion target UT value, by combining the intermediate data and the values of the hour, minute, and second corresponding to the size of the difference between UT values after computing the intermediate data and the values of the hour, minute, and second corresponding to the size of the difference between UT values; storing the character string as a timestamp of the chunk of data; periodically obtaining a new UT value of a new reference time; and re-computing intermediate data including year, month, day, hour, minute, and second, from the new UT value of the new reference time.