This looks like the namenode has lost connection to one of the
datanodes. The default number of replications in ndfs is 3 and it seems
like the namenode has only 2 in its list so it logs this warning. As
Stefan suggested, you should check the diskspace on your machines. If I
recall correctly datanodes crash when they run out of diskspace.
This could also explain your problem with the fetching. One datanode
runs out of diskspace and crashes while one of the tasktrackers is
writing data to it. You should also check if the partition with /tmp has
enough free space.
best regards,
Dominik
Stefan Groschupf schrieb:
may the hdds are full?
try:
bin/nutch ndfs -report
Nutch generates some temporarily data until processing.
Am 30.01.2006 um 00:54 schrieb Mike Smith:
I forgot to mention the namenode log file gives me thousands of these:
060129 155553 Zero targets found,
forbidden1.size=2allowSameHostTargets=false
forbidden2.size()=0
060129 155553 Zero targets found,
forbidden1.size=2allowSameHostTargets=false
forbidden2.size()=0
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