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https://issues.apache.org/jira/browse/SPARK-39949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dongjoon Hyun resolved SPARK-39949.
-----------------------------------
Fix Version/s: 3.4.0
Resolution: Fixed
Issue resolved by pull request 37377
[https://github.com/apache/spark/pull/37377]
> Principals in KafkaTestUtils should use canonical host name
> -----------------------------------------------------------
>
> Key: SPARK-39949
> URL: https://issues.apache.org/jira/browse/SPARK-39949
> Project: Spark
> Issue Type: Bug
> Components: Structured Streaming
> Affects Versions: 3.4.0
> Reporter: Jungtaek Lim
> Assignee: Jungtaek Lim
> Priority: Major
> Fix For: 3.4.0
>
>
> We figured out KafkaDelegationTokenSuite is failing on AWS EC2.
> During investigation we found the root cause as SPARK-39530 - from the debug
> message of kerberos authentication, the host part of principal seems to be
> required as "canonical host name".
> Before SPARK-39530, the test used the IP as "127.0.0.1" (loopback) and the
> host part of principal as the canonical host name of "127.0.0.1".
> While it is still valid to pick up the IP rather than loopback, we still need
> to make sure canonical host name is used in principal.
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