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https://issues.apache.org/jira/browse/KUDU-1976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16133409#comment-16133409
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Todd Lipcon commented on KUDU-1976:
-----------------------------------
I saw this again in another precommit, also in the Java tests. I wrote a simple
bash script to test addprinc/kinit/delprinc in a loop and I can't seem to repro
a race (at least on ubuntu 16). Looking at the code I also don't see any
"caching" involved. It also seems funny that we've only seen this in the Java
tests and not the C++ ones.
> MiniKdc races between add_principal and kinit
> ---------------------------------------------
>
> Key: KUDU-1976
> URL: https://issues.apache.org/jira/browse/KUDU-1976
> Project: Kudu
> Issue Type: Bug
> Components: java, test
> Affects Versions: 1.4.0
> Reporter: Adar Dembo
>
> Noticed this in a recent precommit run, in ASAN mode, but I recall seeing it
> before too. I think it happens from time to time.
> {noformat}
> 02:36:16.240 [DEBUG - main] (MiniKdc.java:339) executing
> '/usr/sbin/kadmin.local -q add_principal -pw testuser testuser', env: '...'
> 02:36:16.268 [DEBUG - main] (MiniKdc.java:363) WARNING: no policy specified
> for [email protected]; defaulting to no policy
> 02:36:16.269 [DEBUG - main] (MiniKdc.java:363) Authenticating as principal
> jenkins-slave/[email protected] with password.
> 02:36:16.269 [DEBUG - main] (MiniKdc.java:363) Principal
> "[email protected]" created.
> 02:36:16.274 [DEBUG - main] (MiniKdc.java:339) executing '/usr/bin/kinit
> testuser', env: '...'
> 02:36:16.277 [DEBUG - main] (MiniKdc.java:363) kinit: Client
> '[email protected]' not found in Kerberos database while getting initial
> credentials
> {noformat}
> I wonder why the kinit doesn't take immediately. I went looking for a "sync"
> option for the KDC but couldn't find one; perhaps it's a bug in the version
> of the KDC used in the test environment? (Ubuntu 14.04 IIRC).
> If there's no such thing, maybe we should retry kinit with some backoff until
> it works (or fails for good).
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