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https://issues.apache.org/jira/browse/NUTCH-2702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebastian Nagel resolved NUTCH-2702.
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Resolution: Implemented
> Fetcher: suppress stack for frequent exceptions
> -----------------------------------------------
>
> Key: NUTCH-2702
> URL: https://issues.apache.org/jira/browse/NUTCH-2702
> Project: Nutch
> Issue Type: Improvement
> Components: fetcher
> Affects Versions: 1.15
> Reporter: Sebastian Nagel
> Assignee: Sebastian Nagel
> Priority: Minor
> Fix For: 1.16
>
>
> Fetcher logs the entire Java stack when a fetch fails with an Exception. To
> reduce the size of the fetcher logs, frequent exceptions with an obvious
> reason should be logged without stack, at least, for the default log level
> (INFO).
> Frequent and obvious exceptions are:
> - java.net.UnknownHostException
> - java.net.SocketTimeoutException
> - java.net.ConnectException
> - javax.net.ssl.SSLHandshakeException
> Class name and message should be sufficient by default. For debugging the
> fetch can be retried with a more verbose log level.
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