JAVA IO Exception

Fri, 22 Oct 2010 19:25:46 -0700 

Hello everyone, I met a problem about java io exception,

although i met it when I use nutch, but i believe it relates to hadoop.
the stacktrace is :

java.io.EOFException
        at java.io.DataInputStream.readFully(DataInputStream.java:180)
        at java.io.DataInputStream.readFully(DataInputStream.java:152)
        at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1450)
        at 
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1428)
        at 
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1417)
        at 
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1412)
        at 
org.apache.hadoop.mapred.SequenceFileRecordReader.<init>(SequenceFileRecordReader.java:43)
        at 
org.apache.hadoop.mapred.SequenceFileInputFormat.getRecordReader(SequenceFileInputFormat.java:58)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:331)
        at org.apache.hadoop.mapred.Child.main(Child.java:158)

java.io.EOFException
        at java.io.DataInputStream.readFully(DataInputStream.java:180)
        at java.io.DataInputStream.readFully(DataInputStream.java:152)
        at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1450)
        at 
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1428)
        at 
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1417)
        at 
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1412)
        at 
org.apache.hadoop.mapred.SequenceFileRecordReader.<init>(SequenceFileRecordReader.java:43)
        at 
org.apache.hadoop.mapred.SequenceFileInputFormat.getRecordReader(SequenceFileInputFormat.java:58)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:331)
        at org.apache.hadoop.mapred.Child.main(Child.java:158)

java.io.EOFException
        at java.io.DataInputStream.readFully(DataInputStream.java:180)
        at java.io.DataInputStream.readFully(DataInputStream.java:152)
        at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:1450)
        at 
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1428)
        at 
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1417)
        at 
org.apache.hadoop.io.SequenceFile$Reader.<init>(SequenceFile.java:1412)
        at 
org.apache.hadoop.mapred.SequenceFileRecordReader.<init>(SequenceFileRecordReader.java:43)
        at 
org.apache.hadoop.mapred.SequenceFileInputFormat.getRecordReader(SequenceFileInputFormat.java:58)
        at org.apache.hadoop.mapred.MapTask.run(MapTask.java:331)
        at org.apache.hadoop.mapred.Child.main(Child.java:158)

Exception in thread "main" java.io.IOException: Job failed!
        at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1232)
        at org.apache.nutch.crawl.CrawlDb.update(CrawlDb.java:102)
        at org.apache.nutch.crawl.CrawlDb.update2(CrawlDb.java:62)
        at org.apache.nutch.crawl.Crawl.main(Crawl.java:127)


thanks for any help.

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