Answer: Yes

## Explanation ### Understanding the Requirements The goal is to count tweets in **each 10-second window** while ensuring **each tweet is counted only once**. This requires a windowing function that: - Creates non-overlapping time intervals - Processes each event exactly once - Maintains fixed, discrete time boundaries ### Tumbling Window Characteristics A **tumbling window** in Azure Stream Analytics has the following key properties: - **Non-overlapping windows**: Each window is discrete and does not overlap with adjacent windows - **Fixed size**: All windows have exactly the same duration (10 seconds in this case) - **Event assignment**: Each event belongs to exactly one window based on its timestamp - **No duplication**: Events cannot appear in multiple windows ### Why Tumbling Window Meets the Goal 1. **10-second window requirement**: Setting the window size to 10 seconds directly satisfies the requirement for counting tweets in each 10-second interval. 2. **Each tweet counted only once**: Since tumbling windows are non-overlapping, each tweet's timestamp will fall into exactly one 10-second window. The system processes and counts each tweet exactly once within its assigned window. 3. **Discrete time boundaries**: Tumbling windows create clean, non-overlapping time segments (e.g., 00:00-00:10, 00:10-00:20, 00:20-00:30), ensuring no ambiguity about which window contains each tweet. ### Comparison with Other Window Types - **Hopping Window**: Could cause duplication if hop size is smaller than window size - **Sliding Window**: Continuously evaluates and could count the same tweet multiple times - **Session Window**: Based on event gaps, not fixed time intervals ### Best Practices Alignment Using tumbling windows for fixed-interval aggregation is a standard Azure Stream Analytics pattern when you need: - Regular, predictable time intervals - No event duplication - Simple, efficient processing This solution directly addresses both requirements: fixed 10-second intervals and single counting of each tweet.

Author: LeetQuiz Editorial Team