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https://issues.apache.org/jira/browse/SOLR-9055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15272434#comment-15272434
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Mark Miller commented on SOLR-9055:
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I don't know that a Repository is a bad idea. A Directory is a very specific
object that is made for accessing files for reading and writing Lucene indexes
- I don't know that we want to tie that up with simply needing to be able to
copy off files to different places. A Repository impl might use Directory impls
to do it's work, but I don't know that I buy that Directory is a good
replacement for Repository. Many possible Repository locations may not even
make reasonable Directory implementations.
> Make collection backup/restore extensible
> -----------------------------------------
>
> Key: SOLR-9055
> URL: https://issues.apache.org/jira/browse/SOLR-9055
> Project: Solr
> Issue Type: Task
> Reporter: Hrishikesh Gadre
> Assignee: Mark Miller
> Attachments: SOLR-9055.patch, SOLR-9055.patch
>
>
> SOLR-5750 implemented backup/restore API for Solr. This JIRA is to track the
> code cleanup/refactoring. Specifically following improvements should be made,
> - Add Solr/Lucene version to check the compatibility between the backup
> version and the version of Solr on which it is being restored.
> - Add a backup implementation version to check the compatibility between the
> "restore" implementation and backup format.
> - Introduce a Strategy interface to define how the Solr index data is backed
> up (e.g. using file copy approach).
> - Introduce a Repository interface to define the file-system used to store
> the backup data. (currently works only with local file system but can be
> extended). This should be enhanced to introduce support for "registering"
> repositories (e.g. HDFS, S3 etc.)
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