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https://issues.apache.org/jira/browse/SPARK-28149?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jose Luis Pedrosa updated SPARK-28149:
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Summary: Disable negeative DNS caching (was: Disable negeative DNS
caching.)
> Disable negeative DNS caching
> -----------------------------
>
> Key: SPARK-28149
> URL: https://issues.apache.org/jira/browse/SPARK-28149
> Project: Spark
> Issue Type: Improvement
> Components: Kubernetes
> Affects Versions: 2.4.3
> Reporter: Jose Luis Pedrosa
> Priority: Minor
>
> By default JVM caches the failures for the DNS resolutions, by default is
> cached by 10 seconds.
> Alpine JDK used in the images for kubernetes has a default timout of 5
> seconds.
> This means that in clusters with slow init time (network sidecar pods, slow
> network start up) executor will never run, because the first attempt to
> connect to the driver will fail, and that failure will be cached, causing
> the retries to happen in a tight loop without actually trying again.
>
>
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