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https://issues.apache.org/jira/browse/SOLR-13366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16817120#comment-16817120
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ASF subversion and git services commented on SOLR-13366:
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Commit fe1a1094763a8b21c11a9a21ed81df46e5e135e7 in lucene-solr's branch
refs/heads/jira/LUCENE-8738 from Christine Poerschke
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=fe1a109 ]
SOLR-13366: Clarify 'Invalid stage name' warning logging in AutoScalingConfig
> AutoScalingConfig 'Invalid stage name' warnings after upgrade
> -------------------------------------------------------------
>
> Key: SOLR-13366
> URL: https://issues.apache.org/jira/browse/SOLR-13366
> Project: Solr
> Issue Type: Bug
> Components: AutoScaling
> Reporter: Christine Poerschke
> Assignee: Christine Poerschke
> Priority: Minor
> Attachments: SOLR-13366.patch, SOLR-13366.patch
>
>
> I noticed WARNings like this in some of our logs:
> {code:java}
> ... OverseerAutoScalingTriggerThread ... o.a.s.c.s.c.a.AutoScalingConfig
> Invalid stage name '.auto_add_replicas.system' in listener config, skipping:
> {beforeAction=[], afterAction=[], trigger=.auto_add_replicas, stage=[WAITING,
> STARTED, ABORTED, SUCCEEDED, FAILED, BEFORE_ACTION, AFTER_ACTION],
> class=org.apache.solr.cloud.autoscaling.SystemLogListener}
> {code}
> After some detective work I think I've tracked this down to 7.1.0
> [TriggerEventProcessorStage|https://github.com/apache/lucene-solr/blob/releases/lucene-solr/7.1.0/solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/TriggerEventProcessorStage.java]
> having a {{WAITING}} stage and that stage having been removed in 7.2.0
> [TriggerEventProcessorStage|https://github.com/apache/lucene-solr/blob/releases/lucene-solr/7.2.0/solr/solrj/src/java/org/apache/solr/client/solrj/cloud/autoscaling/TriggerEventProcessorStage.java]
> via the SOLR-11320 changes. Haven't tried to reproduce it but my theory is
> that the listener got auto-created (with the {{WAITING}} stage) when the
> cloud was running pre-7.2.0 code and then after upgrading the warnings start
> to appear.
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