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From "Alan Woodward (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-3284) StreamingUpdateSolrServer swallows exceptions
Date Mon, 20 Aug 2012 09:11:38 GMT

    [ https://issues.apache.org/jira/browse/SOLR-3284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13437752#comment-13437752
] 

Alan Woodward commented on SOLR-3284:
-------------------------------------

This interacts really badly with bad documents (SOLR-445) - once one of the Runners passes
a bad document to SOLR, all documents subsequently processed by that Runner will be silently
discarded, and there doesn't seem to be any way to detect this in client code.
                
> StreamingUpdateSolrServer swallows exceptions
> ---------------------------------------------
>
>                 Key: SOLR-3284
>                 URL: https://issues.apache.org/jira/browse/SOLR-3284
>             Project: Solr
>          Issue Type: Improvement
>          Components: clients - java
>    Affects Versions: 3.5, 4.0-ALPHA
>            Reporter: Shawn Heisey
>         Attachments: SOLR-3284.patch
>
>
> StreamingUpdateSolrServer eats exceptions thrown by lower level code, such as HttpClient,
when doing adds.  It may happen with other methods, though I know that query and deleteByQuery
will throw exceptions.  I believe that this is a result of the queue/Runner design.  That's
what makes SUSS perform better, but it means you sacrifice the ability to programmatically
determine that there was a problem with your update.  All errors are logged via slf4j, but
that's not terribly helpful except with determining what went wrong after the fact.
> When using CommonsHttpSolrServer, I've been able to rely on getting an exception thrown
by pretty much any error, letting me use try/catch to detect problems.
> There's probably enough dependent code out there that it would not be a good idea to
change the design of SUSS, unless there were alternate constructors or additional methods
available to configure new/old behavior.  Fixing this is probably not trivial, so it's probably
a better idea to come up with a new server object based on CHSS.  This is outside my current
skillset.

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