Stream - Windows

> (Data|State) Management and Processing > (Data Processing|Data Integration) > (Stream|Pipe|Message Queue|Event Processing)

1 - About

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3 - Type

Two type:

  • streaming aggregation (tumbling windows).
  • windowed analytics (sliding windows).

3.1 - Aggregation

Example: find the minimum and maximum each minute

3.2 - Window

windowed analytics (sliding windows) (same as SQL Function - Window Aggregate (Analytics function) ?)

  • an output record (or row) is produced for each new input record.
  • an output record for each and every new input record for the specific PARTITION
  • Each field (or column) in the output record may be calculated using a different window or partition.
  • Windows definition can be time or row-based.

Example: find the minimum and maximum in the 60 second period prior to any given reading

data/processing/stream/window.txt · Last modified: 2019/04/12 16:34 by gerardnico