Re: Combining group by and time window

2016-03-29 Thread Arun Mahadevan
Hi Daniela, For storm core, windowed bolts would give you the tuples in the last minute but you would have to do the grouping yourself. You could of-course use a fields grouping to split the load across the windowed bolts. For trident you might want to take a look at the windowing apis that wer

Combining group by and time window

2016-03-29 Thread Daniela Stoiber
Hi, I have a stream with time series data from different regions. I would like to group the stream by the different regions and to add up the values of the last minute (time window) per region. The sums should be persisted to Redis or something like this. I already found out that Storm Trid