Writing a simple reducer

Vote count:

0

What would be the simplest way to process all the records that were mapped to a specific key and output multiple records for that data.

For example (a synthetic example), assuming my key is a date and the values are intra-day timestamps with measured temperatures. I'd like to classify the temperatures into high/average/low within the day (again, below/above 1 stddev from average).

The output would be the original temperatures with their new classifications.

Thanks

asked 36 secs ago

G B

66

Writing a simple reducer