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https://issues.apache.org/jira/browse/FLINK-33068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17763272#comment-17763272
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Elphas Toringepi commented on FLINK-33068:
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[~danny.cranmer] could you please assign this to me?
> Handle DNS errors in AWS connectors as recoverable
> --------------------------------------------------
>
> Key: FLINK-33068
> URL: https://issues.apache.org/jira/browse/FLINK-33068
> Project: Flink
> Issue Type: Improvement
> Components: Connectors / AWS
> Affects Versions: 1.15.4, 1.16.2, 1.17.1
> Reporter: Elphas Toringepi
> Priority: Major
> Fix For: 1.15.4, 1.16.2, 1.17.1
>
>
> AWS connectors are not treating DNS errors as recoverable using exponential
> back-off resulting in Flink job restarts on transient errors and small
> timeouts.
>
> DNS errors typically manifest as UnknownHostException which is not handled as
> a recoverable exception and potentially not retried.
>
> Here is an [example of an
> exception|https://github.com/apache/flink-connector-aws/blob/21c64ce38d3a6fd4fd9b4abda416c2de1a926780/flink-connector-aws/flink-connector-kinesis/src/main/java/org/apache/flink/streaming/connectors/kinesis/proxy/KinesisProxy.java#L459]
> that is recoverable with exponential-backoff.
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