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From Tomás Fernández Löbbe (JIRA) <j...@apache.org>
Subject [jira] [Created] (SOLR-12568) Config option to throttle the number of recoveries happening in parallel
Date Fri, 20 Jul 2018 00:51:00 GMT
Tomás Fernández Löbbe created SOLR-12568:
--------------------------------------------

             Summary: Config option to throttle the number of recoveries happening in parallel
                 Key: SOLR-12568
                 URL: https://issues.apache.org/jira/browse/SOLR-12568
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
          Components: SolrCloud
            Reporter: Tomás Fernández Löbbe


I've seen cases where a node that was out of service, once it reconnects, all the replicas
hosted in it will try to recover at the same time. In some cases this can cause the host to
run out of disk space (for reasons that can cause replication to duplicate the index size,
like a new leader, or simply segment churn). I'm mostly thinking in throttling the number
of parallel recoveries in a node, but maybe it's also useful to throttle per collection/cluster
for other reasons



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