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https://issues.apache.org/jira/browse/SOLR-7374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15329554#comment-15329554
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David Smiley commented on SOLR-7374:
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bq. One comment: Shouldn't we make BackupRepository an abstract class rather
than interface? We can only add default methods in Java 8, but branch6x is
still Java 7 right?
No; we're all Java 8 now -- master & 6x. You must be thinking of 5x which was
Java 7.
> 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: 5.2, 6.0
>
> Attachments: 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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