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https://issues.apache.org/jira/browse/NUTCH-862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrzej Bialecki  reassigned NUTCH-862:
---------------------------------------

    Assignee: Andrzej Bialecki 

> HttpClient null pointer exception
> ---------------------------------
>
>                 Key: NUTCH-862
>                 URL: https://issues.apache.org/jira/browse/NUTCH-862
>             Project: Nutch
>          Issue Type: Bug
>          Components: fetcher
>    Affects Versions: 1.0.0
>         Environment: linux, java 6
>            Reporter: Sebastian Nagel
>            Assignee: Andrzej Bialecki 
>            Priority: Minor
>         Attachments: NUTCH-862.patch
>
>
> When re-fetching a document (a continued crawl) HttpClient throws an null 
> pointer exception causing the document to be emptied:
> 2010-07-27 12:45:09,199 INFO  fetcher.Fetcher - fetching 
> http://localhost/doc/selfhtml/html/index.htm
> 2010-07-27 12:45:09,203 ERROR httpclient.Http - java.lang.NullPointerException
> 2010-07-27 12:45:09,204 ERROR httpclient.Http - at 
> org.apache.nutch.protocol.httpclient.HttpResponse.<init>(HttpResponse.java:138)
> 2010-07-27 12:45:09,204 ERROR httpclient.Http - at 
> org.apache.nutch.protocol.httpclient.Http.getResponse(Http.java:154)
> 2010-07-27 12:45:09,204 ERROR httpclient.Http - at 
> org.apache.nutch.protocol.http.api.HttpBase.getProtocolOutput(HttpBase.java:220)
> 2010-07-27 12:45:09,204 ERROR httpclient.Http - at 
> org.apache.nutch.fetcher.Fetcher$FetcherThread.run(Fetcher.java:537)
> 2010-07-27 12:45:09,204 INFO  fetcher.Fetcher - fetch of 
> http://localhost/doc/selfhtml/html/index.htm failed with: 
> java.lang.NullPointerException
> Because the document is re-fetched the server answers "304" (not modified):
> 127.0.0.1 - - [27/Jul/2010:12:45:09 +0200] "GET /doc/selfhtml/html/index.htm 
> HTTP/1.0" 304 174 "-" "Nutch-1.0"
> No content is sent in this case (empty http body).
> Index: 
> trunk/src/plugin/protocol-httpclient/src/java/org/apache/nutch/protocol/httpclient/HttpResponse.java
> ===================================================================
> --- 
> trunk/src/plugin/protocol-httpclient/src/java/org/apache/nutch/protocol/httpclient/HttpResponse.java
>         (revision 979647)
> +++ 
> trunk/src/plugin/protocol-httpclient/src/java/org/apache/nutch/protocol/httpclient/HttpResponse.java
>         (working copy)
> @@ -134,7 +134,8 @@
>          if (code == 200) throw new IOException(e.toString());
>          // for codes other than 200 OK, we are fine with empty content
>        } finally {
> -        in.close();
> +        if (in != null)
> +          in.close();
>          get.abort();
>        }

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