Realtime Compute for Apache Flink

alibabacloud Stream processoralibaba-flink

Fully managed Apache Flink running SQL, JAR and Python jobs with checkpointing and exactly-once state.

Provider: alibabacloud
Kind: Stream processor
Category: Messaging
Official docs: https://www.alibabacloud.com/help/en/flink

Properties · 2 set by this component

property	type	values	required	kind default	this component
checkpointIntervalSeconds	integer	—	no	—	inherited
exactlyOnce	boolean	—	no	false	inherited
instances	integer	—	no	—	inherited
jobType · component property	enum	sql \| jar \| python	no	—	inherited
lateDataPolicy	enum	drop \| shift \| sideline	no	—	inherited
managed	boolean	—	no	false	▸ true
stateBackend	enum	memory \| rocksdb \| external	no	memory	inherited
watermarkSeconds	integer	—	no	—	inherited
windowing	enum	none \| event-time \| processing-time	no	none	▸ event-time

Rules that apply · 1

Every rule whose selector covers this component's kind or its category. Whether a rule fires depends on the design: its properties, its edges and its groups.

Event-time windows without watermarkwarning

windowed-aggregation-without-watermark

Event-time windows need a watermark to know when a window is complete. Without one the processor either waits forever or closes windows early and silently drops late events.

— all of these hold:
— the node's `windowing` is "event-time"
— the node's `watermarkSeconds` has no value

Use it in a design

nodes:
  - { id: "flink", component: "alibaba-flink" }

Other Stream processor products · 33

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Source

1# yaml-language-server: $schema=../../schema/component.schema.json
2# Realtime Compute for Apache Flink: fully managed Flink, running SQL, JAR and Python jobs on the
3# Flink runtime with its checkpointing and exactly-once state guarantees ("What is Realtime Compute
4# for Apache Flink"). Checkpoint interval, watermark and state backend are set per deployment.
5schemaVersion: "1"
6type: "component"
7id: "alibaba-flink"
8kind: "stream-processor"
9provider: "alibabacloud"
10docs: "https://www.alibabacloud.com/help/en/flink"
11defaults:
12  managed: true
13  windowing: "event-time"
14properties:
15  jobType:
16    type: "enum"
17    values: ["sql", "jar", "python"]

The same page as markdown, for an agent: /catalogue/components/alibaba-flink.md