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https://issues.apache.org/jira/browse/SOLR-10777?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Varun Thacker closed SOLR-10777.
--------------------------------
    Resolution: Duplicate

Thanks Hrishikesh for pointing out the other Jira and Nilesh for confirming.

 Marking this as a duplicate of SOLR-9536 as it's been addressed in that which 
is part of Solr 6.3

> Replication Backup creation fails with NPE, while deleting the old backups
> --------------------------------------------------------------------------
>
>                 Key: SOLR-10777
>                 URL: https://issues.apache.org/jira/browse/SOLR-10777
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: Backup/Restore, replication (java)
>    Affects Versions: 6.2.1
>            Reporter: Nilesh Singh
>            Priority: Minor
>         Attachments: Screen Shot 2017-05-30 at 7.53.50 PM.png, Screen Shot 
> 2017-05-30 at 7.54.18 PM.png, SOLR-10777.patch
>
>   Original Estimate: 20m
>  Remaining Estimate: 20m
>
> in Solr back up SnapShooter will try to delete the old backups saved on the 
> disk automatically, but deletion fails as the files may not be the pattern 
> type expected by the OldBackUpDirectory. 
> ```
>   private static final Pattern dirNamePattern = 
> Pattern.compile("^snapshot[.](.*)$");
> ```
> In this case the following code throws NPE.
> ```
> if (obd.getTimestamp().isPresent()) {
>           dirs.add(obd);
>         }
> ```
> also in OldBackUpDirectory`s pattern match should haver matcher.matches(), to 
> fetch the group(1) value.



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