Pierre Salagnac created SOLR-16879:
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             Summary: Throttle concurrent backups/restores per node
                 Key: SOLR-16879
                 URL: https://issues.apache.org/jira/browse/SOLR-16879
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
          Components: Backup/Restore
    Affects Versions: 9.2.1
            Reporter: Pierre Salagnac


If the collection is large enough, there very well could be many shards on one 
host and it could saturate the IO. Same issue if we backup many collections 
concurrently.

We should have a protection mechanism, so a Solr node does not have transient 
failures during a large backup or restore.



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