[jira] Updated: (NUTCH-258) Once Nutch logs a SEVERE log item, Nutch fails forevermore

["Stefan Neufeind (JIRA)" <ji...@apache.org>]

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

Stefan Neufeind updated NUTCH-258:
----------------------------------

    Attachment: dumbfix.patch

I know this is a dumb fix :-) But it solves the problem for the moment ...

> Once Nutch logs a SEVERE log item, Nutch fails forevermore
> ----------------------------------------------------------
>
>          Key: NUTCH-258
>          URL: http://issues.apache.org/jira/browse/NUTCH-258
>      Project: Nutch
>         Type: Bug

>   Components: fetcher
>     Versions: 0.8-dev
>  Environment: All
>     Reporter: Scott Ganyo
>     Priority: Critical
>  Attachments: dumbfix.patch
>
> 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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