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https://issues.apache.org/jira/browse/SOLR-9055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15275320#comment-15275320
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Uwe Schindler commented on SOLR-9055:
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Yes' you can read it from any index file that has a codec header. The CodecUtil
class has methods for it:
https://lucene.apache.org/core/6_0_0/core/org/apache/lucene/codecs/CodecUtil.html#retrieveChecksum-org.apache.lucene.store.IndexInput-
To validate and recalculate, you can also use a method, but this may take
long...:
https://lucene.apache.org/core/6_0_0/core/org/apache/lucene/codecs/CodecUtil.html#checksumEntireFile-org.apache.lucene.store.IndexInput-
> 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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