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https://issues.apache.org/jira/browse/NUTCH-258?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12467916
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Sami Siren commented on NUTCH-258:
----------------------------------
I haven't noticed this being a problem for me, so no objections from here.
> Once Nutch logs a SEVERE log item, Nutch fails forevermore
> ----------------------------------------------------------
>
> Key: NUTCH-258
> URL: https://issues.apache.org/jira/browse/NUTCH-258
> Project: Nutch
> Issue Type: Bug
> Components: fetcher
> Affects Versions: 0.8
> Environment: All
> Reporter: Scott Ganyo
> Assigned To: Chris A. Mattmann
> Priority: Critical
> Fix For: 0.9.0
>
> Attachments: dumbfix.patch, NUTCH-258.Mattmann.060906.patch.txt,
> NUTCH-258.Mattmann.080406.patch.txt
>
>
> Once a SEVERE log item is written, Nutch shuts down any fetching forevermore.
> This is from the run() method in Fetcher.java:
> public void run() {
> synchronized (Fetcher.this) {activeThreads++;} // count threads
>
> try {
> UTF8 key = new UTF8();
> CrawlDatum datum = new CrawlDatum();
>
> while (true) {
> if (LogFormatter.hasLoggedSevere()) // something bad happened
> break; // exit
>
> Notice the last 2 lines. This will prevent Nutch from ever Fetching again
> once this is hit as LogFormatter is storing this data as a static.
> (Also note that "LogFormatter.hasLoggedSevere()" is also checked in
> org.apache.nutch.net.URLFilterChecker and will disable this class as well.)
> This must be fixed or Nutch cannot be run as any kind of long-running
> service. Furthermore, I believe it is a poor decision to rely on a logging
> event to determine the state of the application - this could have any number
> of side-effects that would be extremely difficult to track down. (As it has
> already for me.)
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