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https://issues.apache.org/jira/browse/SOLR-7374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15339387#comment-15339387
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Varun Thacker commented on SOLR-7374:
-------------------------------------

Changes look good!

bq. It looks like we are also creating a snapshot as part of post 
commit/optimize operation. Not sure which repository should we use for this? 
Would this require adding another config param to ReplicationHandler?

Let's stick to the current model of reading from the solr.xml file and 
defaulting to local if its not defined ?

> Backup/Restore should provide a param for specifying the directory 
> implementation it should use
> -----------------------------------------------------------------------------------------------
>
>                 Key: SOLR-7374
>                 URL: https://issues.apache.org/jira/browse/SOLR-7374
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Varun Thacker
>            Assignee: Mark Miller
>             Fix For: 6.2
>
>         Attachments: SOLR-7374.patch, SOLR-7374.patch, SOLR-7374.patch, 
> SOLR-7374.patch, SOLR-7374.patch, SOLR-7374.patch, SOLR-7374.patch
>
>
> Currently when we create a backup we use SimpleFSDirectory to write the 
> backup indexes. Similarly during a restore we open the index using 
> FSDirectory.open . 
> We should provide a param called {{directoryImpl}} or {{type}} which will be 
> used to specify the Directory implementation to backup the index. 
> Likewise during a restore you would need to specify the directory impl which 
> was used during backup so that the index can be opened correctly.
> This param will address the problem that currently if a user is running Solr 
> on HDFS there is no way to use the backup/restore functionality as the 
> directory is hardcoded.
> With this one could be running Solr on a local FS but backup the index on 
> HDFS etc.



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