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https://issues.apache.org/jira/browse/SOLR-8394?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17090040#comment-17090040
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Isabelle Giguere commented on SOLR-8394:
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Hi [~dsmiley];
The real-world circumstance is easy : just use the luke handler, after adding a
few documents in Solr.
http://localhost:8983/solr/<some-collection>/admin/luke?wt=xml
Or, if you mean who exactly would need to read indexHeapUsageBytes and in what
circumstances... I think it may be useful to estimate a cluster size (as in
SOLR-8393)
As for the code improvement... I'll try to get around to it.
> Luke handler doesn't support FilterLeafReader
> ---------------------------------------------
>
> Key: SOLR-8394
> URL: https://issues.apache.org/jira/browse/SOLR-8394
> Project: Solr
> Issue Type: Improvement
> Reporter: Steve Molloy
> Assignee: David Smiley
> Priority: Major
> Attachments: SOLR-8394.patch, SOLR-8394.patch, SOLR-8394.patch
>
>
> When fetching index information, luke handler only looks at ramBytesUsed for
> SegmentReader leaves. If these readers are wrapped in FilterLeafReader, no
> RAM usage is returned.
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