[jira] Closed: (NUTCH-769) Fetcher to skip queues for URLS getting repeated exceptions

["Andrzej Bialecki (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NUTCH-769?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrzej Bialecki  closed NUTCH-769.
-----------------------------------

       Resolution: Fixed
    Fix Version/s: 1.1
         Assignee: Andrzej Bialecki 

> Fetcher to skip queues for URLS getting repeated exceptions  
> -------------------------------------------------------------
>
>                 Key: NUTCH-769
>                 URL: https://issues.apache.org/jira/browse/NUTCH-769
>             Project: Nutch
>          Issue Type: Improvement
>          Components: fetcher
>            Reporter: Julien Nioche
>            Assignee: Andrzej Bialecki 
>            Priority: Minor
>             Fix For: 1.1
>
>         Attachments: NUTCH-769-2.patch, NUTCH-769.patch
>
>
> As discussed on the mailing list (see http://www.mail-archive.com/nutch-user@lucene.apache.org/msg15360.html) this patch allows to clear URLs queues in the Fetcher when more than a set number of exceptions have been encountered in a row. This can speed up the fetching substantially in cases where target hosts are not responsive (as a TimeoutException would be thrown) and limits cases where a whole Fetch step is slowed down because of a few queues.
> by default the parameter fetcher.max.exceptions.per.queue has a value of -1 and is deactivated.  

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