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https://issues.apache.org/jira/browse/HBASE-28687?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nick Dimiduk resolved HBASE-28687.
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Fix Version/s: 2.7.0
3.0.0-beta-2
2.6.1
Resolution: Fixed
Committed to branch-2.6+. Thanks a lot [~rmdmattingly].
> BackupSystemTable#checkSystemTable should ensure that the backup system
> tables are enabled
> ------------------------------------------------------------------------------------------
>
> Key: HBASE-28687
> URL: https://issues.apache.org/jira/browse/HBASE-28687
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 2.6.0
> Reporter: Ray Mattingly
> Assignee: Ray Mattingly
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0-alpha-1, 2.7.0, 3.0.0-beta-2, 2.6.1
>
>
> If the backup system tables become disabled, then we enter a state which the
> backup client will not recover from. Without manual intervention, every
> subsequent backup attempt will fail on [BackupSystemTable's calls to
> waitForSystemTable|https://github.com/apache/hbase/blob/3a3dd66e21da3f85c72d75605857713716d579fb/hbase-backup/src/main/java/org/apache/hadoop/hbase/backup/impl/BackupSystemTable.java#L214-L215].
> This checkSystemTable method already ensures that the tables exist — it
> should also ensure that the tables are enabled before we await that condition.
> Alternatively, we could fast-fail if the tables are disabled rather than
> awaiting an enabled state that will never occur.
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