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https://issues.apache.org/jira/browse/SOLR-5220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13934218#comment-13934218
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Jessica Cheng commented on SOLR-5220:
-------------------------------------

+1 on addressing the status code returned during shutdown. It really should be 
5xx (503).

> Marking server as zombie due to 4xx response is odd
> ---------------------------------------------------
>
>                 Key: SOLR-5220
>                 URL: https://issues.apache.org/jira/browse/SOLR-5220
>             Project: Solr
>          Issue Type: Bug
>          Components: clients - java
>    Affects Versions: 4.4
>            Reporter: Jessica Cheng
>              Labels: error, solrj, zombie
>             Fix For: 4.8, 5.0
>
>
> In LBHttpSolrServer.request, a request is retried and server marked as zombie 
> if the return code is 404, 403, 503, or 500, and the comment says "we retry 
> on 404 or 403 or 503 - you can see this on solr shutdown". I think returning 
> a 503 on a shutdown is reasonable, but not 4xx, which is supposed to be a 
> client error. But even if this is can't be fixed systematically on the 
> server-side, seems like on the client side we can retry on another server, 
> but not mark the current server as dead, because most likely when the server 
> returns a 403 (Forbidden) or 404 (Not Found), it's not because it's dead.



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