[jira] [Created] (SOLR-15706) After an incremental back up, the pugeUnused operation incorrectly deletes all backed up data

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

Don created SOLR-15706:
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             Summary: After an incremental back up, the pugeUnused operation incorrectly deletes all backed up data
                 Key: SOLR-15706
                 URL: https://issues.apache.org/jira/browse/SOLR-15706
             Project: Solr
          Issue Type: Bug
      Security Level: Public (Default Security Level. Issues are Public)
          Components: Backup/Restore
    Affects Versions: 8.9
            Reporter: Don


Reproduction Steps: # Create a collection _'foo',_
 # Insert small number of documents (_say 10_) into collection _'foo'_
 # Backup collection _'foo'_ using collections API (/admin/collections?action=BACKUP), this should result in creation of _backupId 0_
 # Backup collection _'foo'_ again using collections API (/admin/collections?action=BACKUP), this should result in creation of _backupId 1_
 # Delete _backupId 0_ for collection _'foo'_ (/admin/collections?action=DELETEBACKUP?backupId=0)
 # Run delete backup for collection _'foo'_ again, this time with _'purgeUnused=true'_ (/admin/collections?action=DELETEBACKUP?purgeUnused=true)
 # Restore from _backupId 1_ which still exists to collection _'bar'_ (/admin/collections?action=RESTORE)

Expected Result: # Restored collection 'bar' has 10 documents in it

Actual Result: # Restored collection 'bar' has 0 documents in it

We found in our testing that when purge is used it incorrectly deletes all backup data instead of just the unused data as it supposed to.



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