This was corrected in Hadoop as per issue HADOOP-917, but I'm thinking some 
code in Nutch might have to be changed also. I reported this issue (via mailing 
list) a while ago and I'm glad it was fixed, but I have been purposely staying 
with revision 495214 of trunk which seems to provide the best 
stability/performance.

 
----- Original Message ----
From: Gal Nitzan <[EMAIL PROTECTED]>
To: nutch-dev@lucene.apache.org
Sent: Wednesday, February 7, 2007 6:36:19 PM
Subject: NPE while fetching


Hi,

I experience NPE while fetching I use Nutch trunk (a week ago) with Hadoop
0.11.1


java.lang.NullPointerException
    at
org.apache.hadoop.io.SequenceFile$Sorter$MergeQueue.merge(SequenceFile.java:
2392)
    at
org.apache.hadoop.io.SequenceFile$Sorter.merge(SequenceFile.java:2087)
    at
org.apache.hadoop.mapred.MapTask$MapOutputBuffer.mergeParts(MapTask.java:498
)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:191)
    at
org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:1372)


Any pointers to the cause?

Thanks,

Gal.

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