[jira] [Created] (HBASE-28687) BackupSystemTable#checkSystemTable should ensure that the backup system tables are enabled

["Ray Mattingly (Jira)" <ji...@apache.org>]

Ray Mattingly created HBASE-28687:
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             Summary: 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


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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