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https://issues.apache.org/jira/browse/SOLR-6841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14257600#comment-14257600
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Alexey Kozhemiakin commented on SOLR-6841:
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Here's what we considered:
1) admin-extra is usually a placeholder for custom code\markup and comes empty
in default packages, definitely not a good place to land our code
2) if you meant just the placement of bars to where admin-extra is now rendered
- usually # of segments is 30-50 and it will make Overview page annoyingly long
and noisy even if we place it (attached a screenshot once again)
3) that's why we came with separate page keeping in mind that at some point it
would host more low level index details.
> Visualize lucene segment info in admin
> --------------------------------------
>
> Key: SOLR-6841
> URL: https://issues.apache.org/jira/browse/SOLR-6841
> Project: Solr
> Issue Type: Improvement
> Reporter: Alexey Kozhemiakin
> Fix For: 5.0
>
> Attachments: (old)Overview page.png, SOLR-6841.patch,
> segments_info.png
>
>
> We find it useful to tune merge policy not blindly but looking on segment
> size and fill ratio.
> We're working on a patch that adds a tab to admin page with McCandless-style
> of segment visualization.
> Draft UI is attached (currenly as part of admin.extra).
> Please share your ideas if it's ok to put the code in core admin.
> More details here
> http://search-lucene.com/m/QTPa44cNJ1
> https://plus.google.com/+MichaelMcCandless/posts/MJVueTznYnD
> http://blog.mikemccandless.com/2011/02/visualizing-lucenes-segment-merges.html
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