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https://issues.apache.org/jira/browse/SPARK-56845?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-56845:
-----------------------------------
Labels: pull-request-available (was: )
> Truncate ConfigMap names that exceed DNS subdomain limit
> --------------------------------------------------------
>
> Key: SPARK-56845
> URL: https://issues.apache.org/jira/browse/SPARK-56845
> Project: Spark
> Issue Type: Bug
> Components: Kubernetes
> Affects Versions: 4.1.1
> Reporter: Tongwei
> Priority: Major
> Labels: pull-request-available
>
> When spark.app.name is very long (> ~222 chars), the derived
> resourceNamePrefix plus a fixed suffix (-hadoop-config, -krb5-file,
> -driver-podspec-conf-map) exceeds the Kubernetes DNS subdomain limit of
> 253 characters, and driver submission fails with "must be no more than
> 253 characters".
> The existing KubernetesClientUtils.configMapName helper truncates
> correctly but is hardcoded to the -conf-map suffix and unused by these
> three call sites.
> Add a configMapName(prefix, suffix) overload that falls back to
> spark-<uniqueID><suffix> when prefix+suffix exceeds the limit, and
> migrate the three sites to it.
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