unknown resolver null

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
docker-compose, python, scala, spark
Domain
backend, data-engineering

Research direction

Reproduce the setup with docker-compose, the pyspark or spark-submit commands, and schema.py; start with verbose or debug logging to investigate the unknown resolver null message. Verify whether the run produces events visible at http://localhost:9090/app/events/list and reaches the http://localhost:8080/producer endpoint.

Written by the indexing model from the issue text.

Description

I'm follwing https://absaoss.github.io/spline/#step-by-step and trying to get understand this.
so i was able to get Spline up and running using docker-compose

as per the dicumentation [http://localhost:9090/]( Spline UI). and http://localhost:8080/ is running.

so i tried to with below command

pyspark \
  --packages za.co.absa.spline.agent.spark:spark-3.0-spline-agent-bundle_2.12:1.0.2 \
  --conf "spark.sql.queryExecutionListeners=za.co.absa.spline.harvester.listener.SplineQueryExecutionListener" \
  --conf "spark.spline.producer.url=http://localhost:8080/producer"

In the terminal i was able to see below error

:: problems summary ::
:::: ERRORS
	unknown resolver null


:: USE VERBOSE OR DEBUG MESSAGE LEVEL FOR MORE DETAILS
:: retrieving :: org.apache.spark#spark-submit-parent-1bda6b26-985d-462f-b21b-9eb6a34a5555
	confs: [default]
	0 artifacts copied, 26 already retrieved (0kB/6ms)
23/02/06 17:15:28 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

then i tried below command to run small pyspark code

spark-submit \
  --packages za.co.absa.spline.agent.spark:spark-3.0-spline-agent-bundle_2.12:1.0.2 \
  --conf "spark.sql.queryExecutionListeners=za.co.absa.spline.harvester.listener.SplineQueryExecutionListener" \
  --conf "spark.spline.producer.url=http://localhost:8080/producer" \
  ./schema.py`

the error unknown resolver null was there and but code executed successfully
but i can't see any output http://localhost:9090/app/events/list here

any suggestions ??

Dominant language
Scala
Stars
26
Forks
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