[ http://issues.apache.org/jira/browse/NUTCH-258?page=all ]

Sami Siren updated NUTCH-258:
-----------------------------

    Fix Version/s: 0.9
                       (was: 0.8)

> Once Nutch logs a SEVERE log item, Nutch fails forevermore
> ----------------------------------------------------------
>
>                 Key: NUTCH-258
>                 URL: http://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
>
>         Attachments: dumbfix.patch, NUTCH-258.Mattmann.060906.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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