Github user suryag10 commented on the issue:
https://github.com/apache/spark/pull/22433
> Does it fail in k8s or does spark k8s code error out ?
> If former, why not fix ânameâ handling in k8s to replace unsupported
characters ?
Following is the error seen without the fix:
Exception in thread "main"
io.fabric8.kubernetes.client.KubernetesClientException: Failure executing: POST
at:
https://k8s-apiserver.bcmt.cluster.local:8443/api/v1/namespaces/default/pods.
Message: Pod "thrift jdbc/odbc server-1537079590890-driver" is invalid:
metadata.name: Invalid value: "thrift jdbc/odbc server-1537079590890-driver": a
DNS-1123 subdomain must consist of lower case alphanumeric characters, '-' or
'.', and must start and end with an alphanumeric character (e.g. 'example.com',
regex used for validation is
'[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*'). Received
status: Status(apiVersion=v1, code=422,
details=StatusDetails(causes=[StatusCause(field=metadata.name, message=Invalid
value: "thrift jdbc/odbc server-1537079590890-driver": a DNS-1123 subdomain
must consist of lower case alphanumeric characters, '-' or '.', and must start
and end with an alphanumeric character (e.g. 'example.com', regex used for
validation is '[a-z0-9]([-a-z0-9]*[a-z0-
9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*'), reason=FieldValueInvalid,
additionalProperties={})], group=null, kind=Pod, name=thrift jdbc/odbc
server-1537079590890-driver, retryAfterSeconds=null, uid=null,
additionalProperties={}), kind=Status, message=Pod "thrift jdbc/odbc
server-1537079590890-driver" is invalid: metadata.name: Invalid value: "thrift
jdbc/odbc server-1537079590890-driver": a DNS-1123 subdomain must consist of
lower case alphanumeric characters, '-' or '.', and must start and end with an
alphanumeric character (e.g. 'example.com', regex used for validation is
'[a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*'),
metadata=ListMeta(resourceVersion=null, selfLink=null,
additionalProperties={}), reason=Invalid, status=Failure,
additionalProperties={}).
This is not specific to Kubernetes, but more of a generic DNS (DNS-1123)
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