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From "Zhang JinYan (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (NUTCH-1188) ERROR util.LogUtil - Cannot log with method [null]
Date Tue, 01 Nov 2011 15:03:32 GMT
ERROR util.LogUtil - Cannot log with method [null]
--------------------------------------------------

                 Key: NUTCH-1188
                 URL: https://issues.apache.org/jira/browse/NUTCH-1188
             Project: Nutch
          Issue Type: Bug
          Components: fetcher
    Affects Versions: 1.4
         Environment: no special enviroment
            Reporter: Zhang JinYan


LogUtil has static fields,which is initialized like this:
    FATAL = Logger.class.getMethod("error", new Class[] { Object.class });
but the Logger has no such method,the correct method is:
    void org.slf4j.Logger.error(String msg)
So,LogUtil's static fields are not initialized correctly(they are null)
Run crawl,you will find msg in hadoop.log:

    2011-11-01 22:38:14,442 ERROR util.LogUtil - Cannot log with method [null]
    java.lang.NullPointerException
	at org.apache.nutch.util.LogUtil$1.flush(LogUtil.java:103)
	at java.io.PrintStream.write(PrintStream.java:432)
	at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:202)
	at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:272)
	at sun.nio.cs.StreamEncoder.flushBuffer(StreamEncoder.java:85)
	at java.io.OutputStreamWriter.flushBuffer(OutputStreamWriter.java:168)
	at java.io.PrintStream.newLine(PrintStream.java:496)
	at java.io.PrintStream.println(PrintStream.java:757)
	at java.lang.Throwable.printStackTraceAsCause(Throwable.java:492)
	at java.lang.Throwable.printStackTrace(Throwable.java:468)
	at org.apache.nutch.protocol.http.api.HttpBase.getProtocolOutput(HttpBase.java:197)
	at org.apache.nutch.fetcher.Fetcher$FetcherThread.run(Fetcher.java:665)



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