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https://issues.apache.org/jira/browse/SOLR-14201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17020732#comment-17020732
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Vinh Le edited comment on SOLR-14201 at 1/28/20 8:03 AM:
---------------------------------------------------------
Thanks [~cpoerschke]
To reproduce this issue, just keep creating new collections
{code:java}
while true; do ./import.sh; sleep 10; done
#import.sh
#!/bin/bash -e
HOST=http://localhost:8983/solr
PREV_COLLECTION=$(http "$HOST/admin/collections?action=LISTALIASES" | jq -r
".aliases.SGFAS")
COLLECTION="next_$(gdate +%H%M%S)"
echo "Create new collection = $COLLECTION"
http POST
"$HOST/admin/collections?action=CREATE&name=$COLLECTION&collection.configName=seafas&numShards=1"
echo "Push data to new collection"
cat docs.xml | http POST
"$HOST/$COLLECTION/update?commitWithin=1000&overwrite=true&wt=json"
"Content-Type: text/xml"
echo "Optimize"
http "$HOST/$COLLECTION/update?optimize=true&maxSegments=1&waitSearcher=false"
echo "Update alias"
http
"$HOST/admin/collections?action=CREATEALIAS&collections=$COLLECTION&name=SGFAS"
echo "Delete previous collection = $PREV_COLLECTION"
http "$HOST/admin/collections?action=DELETE&name=$PREV_COLLECTION"
{code}
I also tried to remove all plugins, but the issue still persists.
Classes.loaded keeps increasing.
{code:java}
❯ http "http://localhost:8983/solr/admin/metrics"; | jq
'.metrics."solr.jvm"."classes.loaded"'
8428
❯ http "http://localhost:8983/solr/admin/metrics"; | jq
'.metrics."solr.jvm"."classes.loaded"'
9323
{code}
!image-2020-01-22-10-39-15-301.png|width=759,height=606!
!image-2020-01-22-10-42-17-511.png!
!image-2020-01-22-12-28-46-241.png!
And VisualVM graphs
!image-2020-01-22-14-45-52-730.png|width=966,height=677!
I'm not really familiar with Java, but looks like this is related to finalizers.
was (Author: vinhlh):
Thanks [~cpoerschke]
To reproduce this issue, just keep creating new collections
{code:java}
while true; do ./import.sh; sleep 10; done
#import.sh
#!/bin/bash -e
HOST=http://localhost:8983/solr
PREV_COLLECTION=$(http "$HOST/admin/collections?action=LISTALIASES" | jq -r
".aliases.SGFAS")
COLLECTION="next_$(gdate +%H%M%S)"
# COLLECTION="next_1029"
echo "Create new collection = $COLLECTION"
http POST
"$HOST/admin/collections?action=CREATE&name=$COLLECTION&collection.configName=seafas&numShards=1"
echo "Push data to new collection"
cat docs.xml | http POST
"$HOST/$COLLECTION/update?commitWithin=1000&overwrite=true&wt=json"
"Content-Type: text/xml"
echo "Optimize"
http "$HOST/$COLLECTION/update?optimize=true&maxSegments=1&waitSearcher=false"
echo "Update alias"
http
"$HOST/admin/collections?action=CREATEALIAS&collections=$COLLECTION&name=SGFAS"
echo "Delete previous collection = $PREV_COLLECTION"
http "$HOST/admin/collections?action=DELETE&name=$PREV_COLLECTION"
{code}
I also tried to remove all plugins, but the issue still persists.
Classes.loaded keeps increasing.
{code:java}
❯ http "http://localhost:8983/solr/admin/metrics"; | jq
'.metrics."solr.jvm"."classes.loaded"'
8428
❯ http "http://localhost:8983/solr/admin/metrics"; | jq
'.metrics."solr.jvm"."classes.loaded"'
9323
{code}
!image-2020-01-22-10-39-15-301.png|width=759,height=606!
!image-2020-01-22-10-42-17-511.png!
!image-2020-01-22-12-28-46-241.png!
And VisualVM graphs
!image-2020-01-22-14-45-52-730.png|width=966,height=677!
I'm not really familiar with Java, but looks like this is related to finalizers.
> 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
>
>
> [~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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