Jason Gerlowski created SOLR-17208:
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Summary: Restore should fetch index files in parallel
Key: SOLR-17208
URL: https://issues.apache.org/jira/browse/SOLR-17208
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Components: Backup/Restore
Affects Versions: 9.5.0
Reporter: Jason Gerlowski
Currently, the restore logic in
[RestoreCore.java|https://github.com/apache/solr/blob/68762adef05d4972bf6d90febd80770713610862/solr/core/src/java/org/apache/solr/handler/RestoreCore.java#L111-L139]
fetches the list of index files from the repository, and iterates over them:
fetching them (as necessary) in serial.
We should consider introducing some parallelism here as a way to speed up
"restore" and "installshard" operations.
(If initial benchmarking is promising and we decide to pursue this, it's
probably worth adding a configuration setting to specify how much (or how
little) parallelization is used.)
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