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From "Varun Thacker (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-6841) Visualize lucene segment info in admin
Date Mon, 02 Feb 2015 11:18:35 GMT

    [ https://issues.apache.org/jira/browse/SOLR-6841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14301165#comment-14301165
] 

Varun Thacker commented on SOLR-6841:
-------------------------------------

This is cool!

While playing around I observed that when there are no segments in the index, the Segments
Info page says:
Size 0
Deletions: NaN%

In the future it would be awesome if we could click on a segment we could get more granular
information about it like the number of fields in the segment, number of terms in that field,
memory consumed by the segment etc. 

> 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, segments_info_merge_candidates.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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