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Posted to issues@solr.apache.org by "Bruno Roustant (Jira)" <ji...@apache.org> on 2025/02/17 17:43:00 UTC

[jira] [Resolved] (SOLR-17671) Replication and Backup should use an unwrapped Directory when copying files.

     [ https://issues.apache.org/jira/browse/SOLR-17671?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bruno Roustant resolved SOLR-17671.
-----------------------------------
    Fix Version/s: 9.9
       Resolution: Fixed

> Replication and Backup should use an unwrapped Directory when copying files.
> ----------------------------------------------------------------------------
>
>                 Key: SOLR-17671
>                 URL: https://issues.apache.org/jira/browse/SOLR-17671
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Bruno Roustant
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 9.9
>
>          Time Spent: 4h 10m
>  Remaining Estimate: 0h
>
> Currently Replication and Backup copy files using a Directory created with the configured DirectoryFactory. This Directory may be a FilterDirectory that adds additional logic (e.g. encryption) that should not run when copying files (e.g. do not decrypt).
> The proposal is to add a new REPLICATE value in the DirectoryFactory.DirContext that would be used by replication and a new BACKUP for backup to get the Directory to use. The DirectoryFactory would unwrap the Directory in this case.
> One could expect that only one REPLICATE could be enough, but backup requires more inner checksum verifications that may need to differentiate the logic between the two (this is the case for encryption).
> Example:
> In the solr-sandbox encryption module, we would need a way to unwrap the Directory used to copy files during index fetching. Otherwise the files are decrypted by the EncryptionDirectory seamlessly during the files copy, ending up with follower replicas having cleartext index.



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