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https://issues.apache.org/jira/browse/SOLR-10650?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16002792#comment-16002792
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Karl Richter commented on SOLR-10650:
-------------------------------------

> And what do you mean by: "experienced with 6.5.1 (which is not in the list of 
> available versions)"? If you go here: 
> http://lucene.apache.org/solr/downloads.html the click the "latest downloads" 
> section you get a bunch of mirrors clearly labeled as 6.5.1.

I'm referring to the available versions of the JIRA issue tracker. It contains 
a lot of subversions, but only 6.5 and not 6.5.1.

> So we need a lot more details before there's much we can do. Where did you 
> download from? What operating system? What Java are you running? My guess is 
> you've made some assumptions that are not true. Java 1.8 is required. From 
> the page you linked "Generally, this error occurs when you have a mismatch 
> between the Solr required Java JDK and your current Java JDK.".

The issue is indeed if `JAVA_HOME` is set to OpenJDK 9, i.e. `env 
JAVA_HOME=/usr/lib/jvm/java-9-openjdk-amd64/ bin/solr start` (on Ubuntu 17.04 
amd64). It'd be nice to add that as helpful verbose feedback so that the 
application is usable without a search engine. There's imo no reason why 
`bin/solr start` should succeed if the application then doesn't work.

> And in the future, when you run into an issue please ping the user's list 
> first until we can agree that it's a code issue, then raise a JIRA. In this 
> case so far 

Agreed. I think with the update to the request to improve the feedback and 
intuitive use, it's an acceptable report, now, and the issues posted on 
stackoverflow.com confirm that there's an issue.

> First start fails due to "Problem accessing /solr/. Reason:      Not Found"
> ---------------------------------------------------------------------------
>
>                 Key: SOLR-10650
>                 URL: https://issues.apache.org/jira/browse/SOLR-10650
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>    Affects Versions: 6.5
>            Reporter: Karl Richter
>
> After downloading Solr 6.5.1. standalone zip archive, extracting it into 
> `$HOME` and starting it with `cd solr-6.5.1/ && bin/solr start` I see
> ```
> HTTP ERROR: 404
> Problem accessing /solr/. Reason:
>     Not Found
> ```
> when I access http://localhost:8983 which redirects to 
> http://localhost:8983/solr.
> After the initial start there's no log file (at least not one which can 
> intuitively be found with `find . -name '*.log'`). There're some workarounds 
> like 
> http://stackoverflow.com/questions/27669323/solr-404-error-with-getting-admin-page,
>  but they involve log files I don't find (and if they'd exist are 
> unnecessarily hard to find), and this issue is more about shedding light on 
> the fact that the first and possibly simplest use case (starting the 
> application) doesn't work. Any sane person interested in trying out Solr 
> would turn it's back on it immediately which is a petty. Please provide an 
> intuitive configuration-free startup routine like one can expect from any 
> good software.
> experienced with 6.5.1 (which is not in the list of available versions)



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