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From "Martijn van Groningen (JIRA)" <j...@apache.org>
Subject [jira] Commented: (SOLR-1143) Return partial results when a connection to a shard is refused
Date Fri, 11 Sep 2009 13:16:57 GMT

    [ https://issues.apache.org/jira/browse/SOLR-1143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12754118#action_12754118
] 

Martijn van Groningen commented on SOLR-1143:
---------------------------------------------

Sure, that is a good idea. I think that also other types of exceptions should result in a
partial result (currently just a connection timeout will result in a partial result). I think
that this behaviour should be enabled with a parameter in the request. Something like _shards.requestTimeout=1500_
(time is in ms).

> 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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