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https://issues.apache.org/jira/browse/HBASE-28003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17754123#comment-17754123
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Duo Zhang commented on HBASE-28003:
-----------------------------------
I think for the two secure tests, it is an environment problem.
We use localhost in our tests but actually, on hbase11-hbase-19, we have
something like this in /etc/hosts
{noformat}
### Hetzner Online GmbH installimage
127.0.0.1 localhost.localdomain localhost
176.9.143.126 jenkins-hbase11.apache.org jenkins-hbase11
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
2a01:4f8:160:215d::2 jenkins-hbase11.apache.org jenkins-hbase11
{noformat}
While in hbase1-hbase10, we have this in /etc/hosts
{noformat}
127.0.0.1 localhost
172.31.19.21 jenkins-hbase1.apache.org jenkins-hbase1
# 44.240.205.17 jenkins-hbase1.apache.org jenkins-hbase1
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
{noformat}
So on hbase11-hbase19, we may use localhost.localdomain as the hostname and
finally lead to the failure.
I think a simple way to fix it to change the /etc/hosts file to not include
localhost.localdomain...
> Some tests are failing everytime on the flaky dashboard
> -------------------------------------------------------
>
> Key: HBASE-28003
> URL: https://issues.apache.org/jira/browse/HBASE-28003
> Project: HBase
> Issue Type: Bug
> Components: test
> Reporter: Duo Zhang
> Priority: Major
>
> TestClusterScopeQuotaThrottle
> TestSecureNettyRpcServer
> TestVerifyReplicationSecureClusterCredentials
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