[jira] [Created] (SOLR-17692) DELETEREPLICA should preempt full-recovery instead of waiting for completion

["Jason Gerlowski (Jira)" <ji...@apache.org>]

Jason Gerlowski created SOLR-17692:
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             Summary: 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


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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