pingsutw opened a new pull request #32874:
URL: https://github.com/apache/spark/pull/32874
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### What changes were proposed in this pull request?
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Improve error message when clients use wrong master URL to submit a job to
k8s.
### Why are the changes needed?
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1. If you propose a new API, clarify the use case for a new API.
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Current error messages are not clear for users.
```
(base) ➜ spark git:(master) ./bin/spark-submit \
--master k8s://https://192.168.49.3:8443 \
--name spark-pi \
--class org.apache.spark.examples.SparkPi \
--conf spark.executor.instances=3 \
--conf spark.kubernetes.authenticate.driver.serviceAccountName=spark \
--conf spark.kubernetes.container.image=pingsutw/spark:testing \
local:///opt/spark/examples/jars/spark-examples_2.12-3.2.0-SNAPSHOT.jar
21/06/09 20:50:37 WARN Utils: Your hostname, kobe-pc resolves to a loopback
address: 127.0.1.1; using 192.168.103.20 instead (on interface ens160)
21/06/09 20:50:37 WARN Utils: Set SPARK_LOCAL_IP if you need to bind to
another address
21/06/09 20:50:38 WARN NativeCodeLoader: Unable to load native-hadoop
library for your platform... using builtin-java classes where applicable
Using Spark's default log4j profile:
org/apache/spark/log4j-defaults.properties
21/06/09 20:50:38 INFO SparkKubernetesClientFactory: Auto-configuring K8S
client using current context from users K8S config file
21/06/09 20:50:39 INFO KerberosConfDriverFeatureStep: You have not specified
a krb5.conf file locally or via a ConfigMap. Make sure that you have the
krb5.conf locally on the driver image.
Exception in thread "main"
io.fabric8.kubernetes.client.KubernetesClientException: Operation: [create] for
kind: [Pod] with name: [null] in namespace: [default] failed.
at
io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:64)
at
io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:64)
at
io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:72)
at
io.fabric8.kubernetes.client.KubernetesClientException.launderThrowable(KubernetesClientException.java:72)
at
io.fabric8.kubernetes.client.dsl.base.BaseOperation.create(BaseOperation.java:380)
at
io.fabric8.kubernetes.client.dsl.base.BaseOperation.create(BaseOperation.java:380)
at
io.fabric8.kubernetes.client.dsl.base.BaseOperation.create(BaseOperation.java:86)
at
io.fabric8.kubernetes.client.dsl.base.BaseOperation.create(BaseOperation.java:86)
```
Below command to reproduce;
```
./bin/spark-submit \
--master k8s://https://192.168.49.2:8443 \
--deploy-mode cluster \
--name spark-pi \
--class org.apache.spark.examples.SparkPi \
--conf spark.executor.instances=3 \
--conf spark.kubernetes.authenticate.driver.serviceAccountName=spark \
--conf spark.kubernetes.container.image=pingsutw/spark:testing \
local:///opt/spark/examples/jars/spark-examples_2.12-3.2.0-SNAPSHOT.jar
```
### Does this PR introduce _any_ user-facing change?
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Yes, users will see more clear error messages.
### How was this patch tested?
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Pass the CIs.
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