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From "Andrzej Bialecki (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SOLR-12815) Implement maxOps limit for IndexSizeTrigger
Date Fri, 28 Sep 2018 18:30:00 GMT
Andrzej Bialecki  created SOLR-12815:
----------------------------------------

             Summary: Implement maxOps limit for IndexSizeTrigger
                 Key: SOLR-12815
                 URL: https://issues.apache.org/jira/browse/SOLR-12815
             Project: Solr
          Issue Type: Sub-task
      Security Level: Public (Default Security Level. Issues are Public)
          Components: AutoScaling
            Reporter: Andrzej Bialecki 
            Assignee: Andrzej Bialecki 


{{IndexSizeTrigger}} can currently generate unlimited number of requested operations (such
as split shard). Combined with the avalanche effect in SOLR-12730 this may cause a massive
spike in the cluster load, and some of these operations may fail.

It's probably better to put an arbitrary limit on the maximum number of generated ops requested
in one trigger event. This will delay some of the needed changes (thus leading to thresholds
being exceeded to a larger degree) but it will increase the likelihood that all operations
succeed.

A similar limit already exists in {{SearchRateTrigger}}.



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