[jira] [Updated] (SOLR-6214) Snapshots numberToKeep param only keeps n-1 backups

["Ramana (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-6214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ramana updated SOLR-6214:
-------------------------

    Attachment: SOLR-6214.patch

Attached is the patch. Basically, "numberToKeep" is to indicate how many backups to retain (including this one). Reference http://wiki.apache.org/solr/SolrReplication

Now, we are not considering the new snapshot directory while comparing "numberToKeep" parameter with existing directories size.

if(numberToKeep > dirs.size()-1) {
      return;
    }

Please verify.




> Snapshots numberToKeep param only keeps n-1 backups
> ---------------------------------------------------
>
>                 Key: SOLR-6214
>                 URL: https://issues.apache.org/jira/browse/SOLR-6214
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 4.9
>            Reporter: Mathias H.
>            Priority: Minor
>         Attachments: SOLR-6214.patch
>
>
> The numberToKeep param for snapshots doesn't work anymore. If you set the param to '2', only '1' backup is kept.
> In the ReplicationHandler in line 377 snapShooter.validateCreateSnapshot(); creates an empty directory for the new snapshot. The deleteOldBackups() method in Snapshooter which will be executed before the backup is created, now sees the two directories an deletes the old one. But this is wrong because the empty directory for the new backup should not be considered.



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