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https://issues.apache.org/jira/browse/HBASE-21933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16772711#comment-16772711
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Reid Chan edited comment on HBASE-21933 at 2/20/19 7:24 AM:
------------------------------------------------------------

I bumped into it once
It was a bug caused by hadoop-common UserGroupInformation class. But I forgot 
the JIRA number...
Please try compile hbase with a higher version of hadoop-version, in my case, 
2.6.4.


was (Author: reidchan):
I bumped into once
It was a bug caused by hadoop-common UserGroupInformation class. But I forgot 
the JIRA number...
Please try compile hbase with a higher version of hadoop-version, in my case, 
2.6.4.

> regionserver (with kerberos ) relogin failture from keytab due to the 
> ConcurrentModificationException
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-21933
>                 URL: https://issues.apache.org/jira/browse/HBASE-21933
>             Project: HBase
>          Issue Type: Bug
>          Components: java
>    Affects Versions: 1.2.0
>            Reporter: powerinf
>            Priority: Critical
>         Attachments: region failture.txt
>
>
> Hbase regionserver  could not relogin from keytab hbase.keytab ,more see log



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