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https://issues.apache.org/jira/browse/YARN-7777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16336044#comment-16336044
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Billie Rinaldi commented on YARN-7777:
--------------------------------------
Looks like there's one more issue, names with uppercase letters aren't working.
It's because the lowercase happens in RegistryUtils.convertUsername, not in
RegistryUtils.currentUser. So the zk path is created with lowercase, and that
is used to create a good hostname for RegistryDNS. But after this patch, a name
with uppercase letters doesn't pass the ServiceApiUtil check. Maybe we should
call convertUsername in RegistryUtils.currentUser? I don't see a reason for
needing a partially converted username returned from RegistryUtils.currentUser.
> Fix user name format in YARN Registry DNS name
> -----------------------------------------------
>
> Key: YARN-7777
> URL: https://issues.apache.org/jira/browse/YARN-7777
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: Jian He
> Assignee: Jian He
> Priority: Major
> Attachments: YARN-7777.01.patch, YARN-7777.02.patch,
> YARN-7777.03.patch
>
>
> user name that has "\_" should be converted to user "-", because DNS name
> doesn't allow "_"
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