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https://issues.apache.org/jira/browse/SOLR-10147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15874975#comment-15874975
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Jan Høydahl edited comment on SOLR-10147 at 2/20/17 7:27 PM:
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I'm not sure it is even important to distinguish between various states of an
inactive shard/replica? We could use _italics_ or *bold*, or even
-strikethrough- in order to not being dependent on colors. BTW, it is bad
practice to rely on colors only, ref color blind people or if you print the
page on a B/W printer :-)
So to try to improve on the existing states as well, what if we create a scheme
with combinations of color and style, here is an attempt where we use bold to
signify Leader, italic to mean recovering and strike-through means inactive,
while double strikethrough means Gone. See screen shot:
!color_and_style.png!
http://jsfiddle.net/janhoy/w4Ldbhy7/4/
was (Author: janhoy):
I'm not sure it is even important to distinguish between various states of an
inactive shard/replica? We could use _italics_ or *bold*, or even
-strikethrough- in order to not being dependent on colors. BTW, it is bad
practice to rely on colors only, ref color blind people or if you print the
page on a B/W printer :-)
So to try to improve on the existing colors as well, what if we create a scheme
with combinations of color and style, here is an attempt where we use bold to
signify Leader, italic to mean recovering, strike-through means down or
inactive, while double strikethrough means Gone. See screen shot:
!color_and_style.png!
http://jsfiddle.net/janhoy/w4Ldbhy7/3/
> Admin UI -> Cloud -> Graph: Impossible to see shard state
> ---------------------------------------------------------
>
> Key: SOLR-10147
> URL: https://issues.apache.org/jira/browse/SOLR-10147
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Admin UI
> Reporter: Jan Høydahl
> Attachments: color_and_style.png, screenshot-1.png, SOLR-10147.patch,
> SOLR-10147.patch
>
>
> Currently in the Cloud -> Graph view there is a legend with color codes, but
> that is for replicas only.
> We need a way to quickly see the state of the shard, in particular if it is
> active or inactive. For testing, create a collection, then call SPLITSHARD on
> shard1, and you'll end up with shards {{shard1}}, {{shard1_0}} and
> {{shard1_1}}. It is not possible to see which one is active or inactive.
> Also, the replicas belonging to the inactive shard are still marked with
> green "Active", while in reality they are "Inactive".
> The simplest would be to add a new state "Inactive" with color e.g. blue,
> which would be used on both shard and replica level. But since an inactive
> replica could also be "Gone" or "Down", there should be some way to indicate
> both at the same time...
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