[jira] [Commented] (NUTCH-2598) URLNormalizerChecker fails on invalid URLs in input

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[jira] [Commented] (NUTCH-2598) URLNormalizerChecker fails on invalid URLs in input

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    [ https://issues.apache.org/jira/browse/NUTCH-2598?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16748869#comment-16748869 ]

ASF GitHub Bot commented on NUTCH-2598:
---------------------------------------

sebastian-nagel commented on pull request #435: NUTCH-2598 URLNormalizerChecker fails on invalid URLs in input
URL: https://github.com/apache/nutch/pull/435
 
 
   Output empty string for invalid URLs and do not exit.
 
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> URLNormalizerChecker fails on invalid URLs in input
> ---------------------------------------------------
>
>                 Key: NUTCH-2598
>                 URL: https://issues.apache.org/jira/browse/NUTCH-2598
>             Project: Nutch
>          Issue Type: Bug
>    Affects Versions: 1.14
>            Reporter: Sebastian Nagel
>            Priority: Minor
>             Fix For: 1.16
>
>
> I use the URLNormalizerChecker (urlnormalizer-regex and urlnormalizer-basic) to normalize URLs before further processing them. If one of the used normalizers throws a MalformedURLException when the URLNormalizer.normalize(...) method is called, this isn't caught and causes the checker to exit:
> {noformat}
> Exception in thread "main" java.net.MalformedURLException: For input string: "???120810002"
>         at java.net.URL.<init>(URL.java:627)
>         at java.net.URL.<init>(URL.java:490)
>         at java.net.URL.<init>(URL.java:439)
>         at org.apache.nutch.net.urlnormalizer.basic.BasicURLNormalizer.normalize(BasicURLNormalizer.java:100)
>         at org.apache.nutch.net.URLNormalizers.normalize(URLNormalizers.java:319)
>         at org.apache.nutch.net.URLNormalizerChecker.process(URLNormalizerChecker.java:75)
>         at org.apache.nutch.util.AbstractChecker.processStdin(AbstractChecker.java:97)
>         at org.apache.nutch.util.AbstractChecker.run(AbstractChecker.java:77)
>         at org.apache.nutch.net.URLNormalizerChecker.run(URLNormalizerChecker.java:71)
>         at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
>         at org.apache.nutch.net.URLNormalizerChecker.main(URLNormalizerChecker.java:80)
> Caused by: java.lang.NumberFormatException: For input string: "???120810002"
>         at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
>         at java.lang.Integer.parseInt(Integer.java:580)
>         at java.lang.Integer.parseInt(Integer.java:615)
>         at java.net.URLStreamHandler.parseURL(URLStreamHandler.java:222)
>         at java.net.URL.<init>(URL.java:622)
>         ... 10 more
> {noformat}
> The URLNormalizer interface declares the MalformedURLException, it should be caught in the normalizer checker:
> - log the error
> - return/output empty string



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