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https://issues.apache.org/jira/browse/NUTCH-575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dennis Kubes updated NUTCH-575:
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Attachment: sagar-search.patch
This is a simplistic workaround to the problem. Currently urls with no content
throw the NPE. This happens in both regular search results and in the
opensearch servlet as the problem is in NutchBean while getting fetched
segments. this happens more often in crawls with fewer numbers of pages as
more non-content pages will tend to rise to top of search results.
This patch prevents the NPE from being thrown. I think the problem is deeper
though. I don't know why some URLs happen with a null Content object. As time
and research permits I will attach a more comprehensive patch.
> NPE in OpenSearchServlet when summary is null
> ---------------------------------------------
>
> Key: NUTCH-575
> URL: https://issues.apache.org/jira/browse/NUTCH-575
> Project: Nutch
> Issue Type: Bug
> Components: searcher
> Affects Versions: 0.9.0, 1.0.0
> Reporter: John H. Lee
> Fix For: 1.0.0
>
> Attachments: oss-npe.patch, sagar-search.patch
>
>
> summaries[i].toHtml() is called without checking if summaries[i] is not null,
> causing an unhandled NullPointerException and a failed OpenSearchServlet
> query.
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