Sliding Window (deprecated)

Deprecated and unreachable in Stream configs

The stream compiler rejects the sliding window buffer with an actionable error. This page documents the legacy plugin for pre-migration configs only. For time-based overlapping windows, use an event-time sliding window operator in a Job DAG, which classifies every containing window membership per row.

Legacy behavior

The Sliding Window buffer grouped messages into overlapping windows that advanced over time. Up to window_size messages were emitted as a single batch on each interval; after each emission the window slid forward by slide_size messages.

Legacy configuration

Field	Type	Required	Default	Description
type	string	yes	—	sliding_window
window_size	integer	yes	—	Number of messages to include in each emitted window.
interval	duration	yes	—	Time between window emissions. Examples: 1ms, 1s, 1m, 1h.
slide_size	integer	yes	—	Number of messages to advance the window after each emission. Controls the overlap between consecutive windows.

Compiling a Stream config that declares this buffer fails with a migration message; a Job DAG with a sliding window operator is the replacement.