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From "Lars George (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-17774) Improve locality info in table details page
Date Sun, 12 Mar 2017 14:44:04 GMT
Lars George created HBASE-17774:
-----------------------------------

             Summary: Improve locality info in table details page
                 Key: HBASE-17774
                 URL: https://issues.apache.org/jira/browse/HBASE-17774
             Project: HBase
          Issue Type: Improvement
          Components: UI
    Affects Versions: 1.3.0
            Reporter: Lars George


The {{table.jsp}} page does list the locality info of each region, but is missing some vital
other details, which are:

- An extra column listing store and store file counts (could be two separate columns too like
in Master and RS UI, but a single column saves space, for example "3/6", meaning three stores
and six store files in total
- Hide locality "0.0" if the stores are all empty, i.e. no store file is present. It makes
little sense penalizing an empty store when it comes to the total locality of the table.
- Make region name clickable like on RS status page, linking to {{region.jsp}} page showing
store details.
- Summary row at the end, showing the total locality (see note above), number stores, number
of store files. That is, compute the _real_ locality, which is considering only the actual
store files.

I also wish we had some simple but effective charts/diagrams here, like a heatmap for data
distribution within the table (since we have all of this info), or another heatmap for current
request distribution. Strong +1 to add that here too.

I have reasoned about this at customers way too often to not have this improved somehow. For
the enterprise level admin, a good UI goes a long way!



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