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[spark] Validation of the Ray-on-Spark-on-YARN mode to enable it to run. #58335

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Merged
merged 1 commit into from
Nov 3, 2025
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[spark] Validation of the Ray-on-Spark-on-YARN mode to enable it to run. #58335

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3 changes: 2 additions & 1 deletion python/ray/util/spark/cluster_init.py
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Original file line number Diff line number Diff line change
Expand Up @@ -843,11 +843,12 @@ def _setup_ray_cluster_internal(
if not (
spark_master.startswith("spark://")
or spark_master.startswith("local-cluster[")
or spark_master == "yarn"
or is_spark_local_mode
):
raise RuntimeError(
"Ray on Spark only supports spark cluster in standalone mode, "
"local-cluster mode or spark local mode."
"local-cluster mode, spark on yarn mode or spark local mode."
)
Comment on lines 849 to 852
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@gemini-code-assist gemini-code-assist bot Oct 31, 2025

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medium

To improve debuggability, consider including the detected spark_master value in the error message. This will help users quickly identify misconfigurations when they are using an unsupported Spark master.

Suggested change
raise RuntimeError(
"Ray on Spark only supports spark cluster in standalone mode, "
"local-cluster mode or spark local mode."
"local-cluster mode, spark on yarn mode or spark local mode."
)
raise RuntimeError(
"Ray on Spark only supports spark cluster in standalone mode, "
"local-cluster mode, spark on yarn mode or spark local mode. "
f"Detected spark master is '{spark_master}'."
)


if is_spark_local_mode:
Expand Down