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Posted to issues@solr.apache.org by "Jason Gerlowski (Jira)" <ji...@apache.org> on 2025/04/02 13:20:00 UTC
[jira] [Resolved] (SOLR-17692) DELETEREPLICA should preempt full-recovery instead of waiting for completion
[ https://issues.apache.org/jira/browse/SOLR-17692?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jason Gerlowski resolved SOLR-17692.
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Fix Version/s: main (10.0)
9.9
Assignee: Jason Gerlowski
Resolution: Fixed
> DELETEREPLICA should preempt full-recovery instead of waiting for completion
> ----------------------------------------------------------------------------
>
> Key: SOLR-17692
> URL: https://issues.apache.org/jira/browse/SOLR-17692
> Project: Solr
> Issue Type: Bug
> Components: replication (java), SolrCloud
> Reporter: Jason Gerlowski
> Assignee: Jason Gerlowski
> Priority: Major
> Labels: pull-request-available
> Fix For: main (10.0), 9.9
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> I recently deleted a NRT replica that was in the middle of a full-recovery and was a bit surprised to see that the "delete" blocked waiting for the recovery to finish. This is a minor pain when the index is small, but becomes a huge waste of administrator time (and network bandwidth!) as index sizes grow.
> There's some plumbing in Solr that attempts to preempt recovery during a DELETE, but it appears that it seems that it mostly comes into play during peer-sync and "background replication" scenarios (i.e. PULL and TLOG replicas that do full-recovery during normal operation). Preemption doesn't seem to work once a recovering core is in the midst of a "full recovery". We should modify this code that it stops full-recovery as well, unless there's some compelling reason this was avoided in the initial implementation?
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