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https://issues.apache.org/jira/browse/SOLR-13366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16813663#comment-16813663
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Christine Poerschke commented on SOLR-13366:
--------------------------------------------
{quote}... 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.
{quote}
Have been able to confirm that theory, and tested the patch in the process.
A follow-up thing I guess is if/how/when the invalid stage being WARN-ed about
can be easily removed after upgrading.
> 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
> Priority: Minor
> Attachments: 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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