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https://issues.apache.org/jira/browse/HBASE-1634?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12729521#action_12729521
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stack commented on HBASE-1634:
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So, J-D speculates that what could be happening here is that historian events
are coming in after a .META. entry for a region has been deleted.
1633 adds emission of the row causing the problem.
> UI and shell list throw NPE
> ---------------------------
>
> Key: HBASE-1634
> URL: https://issues.apache.org/jira/browse/HBASE-1634
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Fix For: 0.20.0
>
>
> I have a .META. from bryan duxbury that has a row with only historian data.
> List does whole row, not just info, so if only historian entries, a row is
> returned. We then try and get a regioninfo from this row and NPE.
> As to why this happens, jd suggests that since we moved to async historian
> updates, row may have been deleted already. Confirm.
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