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https://issues.apache.org/jira/browse/SOLR-17099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17817972#comment-17817972
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Pierre Salagnac commented on SOLR-17099:
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We're seeing this too. This is is easy to reproduce, just by running test
{{{}PlacementPluginIntegrationTest{}}}. My understanding is this was introduced
with SOLR-16507. We add all values of the {{Tags}} enum in the result.
I will try to contribute a fix for this.
> Unsolicited snitch tag warnings from AttributeFetcherImpl
> ---------------------------------------------------------
>
> Key: SOLR-17099
> URL: https://issues.apache.org/jira/browse/SOLR-17099
> Project: Solr
> Issue Type: Bug
> Affects Versions: 9.3, 9.4
> Reporter: Colvin Cowie
> Priority: Minor
>
> I first spotted this in 9.3, I've not gone back to check earlier versions,
> though it is likely to affect them too. When configuring replica placement
> rules on a standard out of the box deployment and creating a collection,
> error messages are logged like this:
> {{{{2023-09-27 08:45:58.188 ERROR (OverseerThreadFactory-19-thread-5) []
> o.a.s.c.p.i.AttributeFetcherImpl Received unsolicited snitch tag heapUsage
> from node NodeImpl(localhost:8983_solr)
> 2023-09-27 08:45:58.188 ERROR (OverseerThreadFactory-19-thread-5) []
> o.a.s.c.p.i.AttributeFetcherImpl Received unsolicited snitch tag sysLoadAvg
> from node NodeImpl(localhost:8983_solr)
> 2023-09-27 08:45:58.188 ERROR (OverseerThreadFactory-19-thread-5) []
> o.a.s.c.p.i.AttributeFetcherImpl Received unsolicited snitch tag freedisk
> from node NodeImpl(localhost:8983_solr)
> 2023-09-27 08:45:58.188 ERROR (OverseerThreadFactory-19-thread-5) []
> o.a.s.c.p.i.AttributeFetcherImpl Received unsolicited snitch tag totaldisk
> from node NodeImpl(localhost:8983_solr)}}}}
>
> That error comes from here:
> [https://github.com/apache/lucene-solr/commit/c7d234cafd37d824ff6642b449d3cb333d1e4a9a#r129141901]
> [~ilan] said "I suspect it was introduced with SOLR-15019
> ([commit|https://github.com/apache/lucene-solr/blob/2695624a9f2d11a63f3640dd7f3bb30c2e6f938e/solr/core/src/java/org/apache/solr/cluster/placement/impl/AttributeFetcherImpl.java#L69])
> when requested tags were prefixed with sysprop. but returned tags apparently
> not."
>
> The error is fairly benign, it just pollutes the logs and makes it look like
> something is wrong but everything else functions correctly (if you aren't
> trying to configure rules based on those four metrics at least).
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