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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