[jira] Commented: (SOLR-1143) Return partial results when a connection to a shard is refused

["David Bowen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-1143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12833440#action_12833440 ] 

David Bowen commented on SOLR-1143:
-----------------------------------

I've found this patch very useful.  I recommend extending it to check for instanceof IOException rather than just java.net.ConnectException.  This is useful in order to catch org.apache.commons.httpclient.ConnectTimeoutException and java.net.SocketTimeoutException.

> Return partial results when a connection to a shard is refused
> --------------------------------------------------------------
>
>                 Key: SOLR-1143
>                 URL: https://issues.apache.org/jira/browse/SOLR-1143
>             Project: Solr
>          Issue Type: Improvement
>          Components: search
>            Reporter: Nicolas Dessaigne
>            Assignee: Grant Ingersoll
>             Fix For: 1.5
>
>         Attachments: SOLR-1143-2.patch, SOLR-1143-3.patch, SOLR-1143.patch
>
>
> If any shard is down in a distributed search, a ConnectException it thrown.
> Here's a little patch that change this behaviour: if we can't connect to a shard (ConnectException), we get partial results from the active shards. As for TimeOut parameter (https://issues.apache.org/jira/browse/SOLR-502), we set the parameter "partialResults" at true.
> This patch also adresses a problem expressed in the mailing list about a year ago (http://www.nabble.com/partialResults,-distributed-search---SOLR-502-td19002610.html)
> We have a use case that needs this behaviour and we would like to know your thougths about such a behaviour? Should it be the default behaviour for distributed search?

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