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How do tumbling window triggers ensure data consistency in batch processing?

SQLmedium0.3 min readPremium
Frequency
Low
Asked at 1 company
Category
487
questions in SQL
Difficulty Split
130E|271M|86H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Virtusa
Key Concepts Tested
window
Expert AnswerPremium
53 wordsInterview-ready
**Tumbling windows**: Fixed, non-overlapping intervals. Each batch processes one complete window; no overlap = each record in exactly one batch. **Trigger**: Fires when window completes (e.g., watermark passes window end). **Consistency**: Exactly-once or at-least-once per window; idempotent sink replays safely....
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