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https://issues.apache.org/jira/browse/SOLR-14201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17024957#comment-17024957
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Vinh Le commented on SOLR-14201:
--------------------------------
hmm, interesting, I assumed that optimize is synchronous (as have to wait). Let
me try each case:
h3. *Removing optimize step*
**It seems classes loaded still keeps increasing
!image-2020-01-28-16-17-44-030.png|width=540,height=389!
One thing I forgot to mention is, if I click on "Perform GC" button in
VisualVM, to trigger GC manually.
!image-2020-01-28-16-19-43-760.png|width=329,height=106!
Immediately, we can see a drop in classes loaded in VisualVM UI,
!image-2020-01-28-16-20-50-709.png|width=915,height=544!
(at 4:20PM)
But checking via Metrics APIs
{quote}http --timeout=300 "http://localhost:8983/solr/admin/metrics"; | jq
'.metrics."solr.jvm"."classes.loaded"'
9635
{quote}
It remains the same.
> some SolrCore are not released after being removed
> --------------------------------------------------
>
> Key: SOLR-14201
> URL: https://issues.apache.org/jira/browse/SOLR-14201
> Project: Solr
> Issue Type: Bug
> Reporter: Christine Poerschke
> Priority: Major
> Attachments: image-2020-01-22-10-39-15-301.png,
> image-2020-01-22-10-42-17-511.png, image-2020-01-22-12-28-46-241.png,
> image-2020-01-22-14-45-52-730.png, image-2020-01-28-16-17-44-030.png,
> image-2020-01-28-16-19-43-760.png, image-2020-01-28-16-20-50-709.png
>
>
> [~vinhlh] reported in SOLR-10506 (affecting 6.5 with fixes in 6.6.6 and 7.0):
> bq. In 7.7.2, some SolrCore still are not released after being removed.
> https://issues.apache.org/jira/secure/attachment/12991357/image-2020-01-20-14-51-26-411.png
> Starting this ticket for a separate investigation and fix. A next
> investigative step could be to try and reproduce the issue on the latest 8.x
> release.
>
>
>
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