John Wesley created SPARK-33361:
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Summary: Dataset.observe() functionality does not work with
structured streaming
Key: SPARK-33361
URL: https://issues.apache.org/jira/browse/SPARK-33361
Project: Spark
Issue Type: Bug
Components: Structured Streaming
Affects Versions: 3.0.0
Environment: Spark on k8s, version 3.0.0
Reporter: John Wesley
The dataset observe() functionality does not work as expected with spark in
cluster mode.
Related discussion here:
[http://apache-spark-user-list.1001560.n3.nabble.com/Best-way-to-emit-custom-metrics-to-Prometheus-in-spark-structured-streaming-td38826.html]
Using lit() as the aggregation column goes through well. However sum, count etc
returns 0 all the time.
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