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https://issues.apache.org/jira/browse/NUTCH-755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12769926#action_12769926
]
Reinhard Schwab commented on NUTCH-755:
---------------------------------------
in the first case, the "url" is rejected or?
the filter method will return null.
catch (Exception e) {
// if an error happens, allow the url to pass
LOG.error("Could not apply filter on url: " + url + "\n"
+ org.apache.hadoop.util.StringUtils.stringifyException(e));
return null;
}
the comment in the code is wrong.
if the method returns null, the url does not pass.
the malformed check is done by java.net.URL constructor.
it accepts http:/comments.php
> DomainURLFilter crashes on malformed URL
> ----------------------------------------
>
> Key: NUTCH-755
> URL: https://issues.apache.org/jira/browse/NUTCH-755
> Project: Nutch
> Issue Type: Bug
> Components: fetcher
> Affects Versions: 1.0.0
> Environment: Tomcat 6.0.14
> Java 1.6.0_14
> Linux
> Reporter: Mike Baranczak
>
> 2009-09-16 21:54:17,001 ERROR [Thread-156] DomainURLFilter - Could not apply
> filter on url: http:/comments.php
> java.lang.NullPointerException
> at
> org.apache.nutch.urlfilter.domain.DomainURLFilter.filter(DomainURLFilter.java:173)
> at org.apache.nutch.net.URLFilters.filter(URLFilters.java:88)
> at
> org.apache.nutch.parse.ParseOutputFormat$1.write(ParseOutputFormat.java:200)
> at
> org.apache.nutch.parse.ParseOutputFormat$1.write(ParseOutputFormat.java:113)
> at
> org.apache.nutch.fetcher.FetcherOutputFormat$1.write(FetcherOutputFormat.java:96)
> at
> org.apache.nutch.fetcher.FetcherOutputFormat$1.write(FetcherOutputFormat.java:70)
> at org.apache.hadoop.mapred.ReduceTask$3.collect(ReduceTask.java:410)
> at
> org.apache.hadoop.mapred.lib.IdentityReducer.reduce(IdentityReducer.java:39)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:436)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:170)
> Expected behavior would be to recognize the URL as malformed, and reject it.
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