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From "Alan Woodward (JIRA)" <>
Subject [jira] [Commented] (SOLR-7151) SolrClient.query() methods should throw IOException
Date Tue, 24 Feb 2015 15:07:04 GMT


Alan Woodward commented on SOLR-7151:

bq. We are great about http, but anything java is a mine field. And soon we would like to
support rolling upgrades to some degree.

Agreed!  I don't think this will effect rolling upgrades, though?  This just changes how the
client handles exceptions - you can still talk to a 5.1 server using a 4.10 client, and vice

> SolrClient.query() methods should throw IOException
> ---------------------------------------------------
>                 Key: SOLR-7151
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>          Components: SolrJ
>            Reporter: Alan Woodward
>            Assignee: Alan Woodward
>            Priority: Minor
>             Fix For: Trunk, 5.1
>         Attachments: SOLR-7151.patch
> All the methods on SolrClient are declared as throwing SolrServerException (thrown if
there's an error somewhere on the server), and IOException (thrown if there's a communication
error), except for the QueryRequest methods.  These swallow up IOException and repackage them
in a SolrServerException.
> I think these are useful distinctions to make (you might want to retry on an IOException,
but not on a SolrServerException), and we should make the query methods fall in line with
the others.
> I'm not sure if this should go into 5.x as well as trunk, as it's a backwards-breaking
change.  I'm leaning towards yes, as it's a sufficiently useful API change that it's worth
the break, but I'm not going to insist on it.

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