I dont think the network settings are the problem, as I have been able
to parse other segments using map reduce no problem. If it was the
network configuration, wouldn't it never work? However, things do not
seem to be stable, as some operations in ndfs will error, and then I do
the same thing 5 minutes later and it works fine. Same with other
things, some crawls work fine, others throw exceptions and crash (I
actually had a crawl crash with the same problem as below). This is
using 3 Opteron boxes running Suse Linux.
-Matt Zytaruk
Stefan Groschupf wrote:
Looks like a problem with the tcp ip communication.
Any firewalls running on the boxes? May any ports closed?
Are the dns names correct configured?
Is your job tracker running stable?
Stefan
Am 13.12.2005 um 19:46 schrieb Matt Zytaruk:
Hello all, I've been trying to parse a segment of data (probably
around 500k pages) I previously fetched, and everytime I try, I get
an error. Below is the error given by the slaves. The master gives a
similar error. This usually happens late in the reduce phase, but
has also happened during the map phase once. Any ideas what might be
going on here? Network issues? bugs in the tracker?
Thanks for any help you might be able to give.
-matt zytaruk
Slaves:
060102 200647 task_m_bvkze5 Child Error
java.io.IOException: Task process exit with nonzero status.
at org.apache.nutch.mapred.TaskRunner.runChild
(TaskRunner.java:139)
at org.apache.nutch.mapred.TaskRunner.run(TaskRunner.java:92)
060102 200833 task_m_bvkze5 done; removing files.
060102 200855 Client connection to 64.141.15.126:8050: closing
java.lang.reflect.UndeclaredThrowableException
at $Proxy0.pollForClosedTask(Unknown Source)
at org.apache.nutch.mapred.TaskTracker.offerService
(TaskTracker.java:241)
at org.apache.nutch.mapred.TaskTracker.run(TaskTracker.java: 268)
at org.apache.nutch.mapred.TaskTracker.main(TaskTracker.java:
633)
Caused by: java.io.IOException: timed out waiting for response
at org.apache.nutch.ipc.Client.call(Client.java:296)
at org.apache.nutch.ipc.RPC$Invoker.invoke(RPC.java:127)
... 4 more
060102 201229 Lost connection to JobTracker [crawler-
d-01.internal.wavefire.ca/64.141.15.126:8050]. Retrying...
Master:
Exception in thread "main"
java.lang.reflect.UndeclaredThrowableException
at $Proxy0.getJobStatus(Unknown Source)
at org.apache.nutch.mapred.JobClient.getJob(JobClient.java:272)
at org.apache.nutch.mapred.JobClient.runJob(JobClient.java:295)
at org.apache.nutch.crawl.ParseSegment.parse
(ParseSegment.java:91)
at org.apache.nutch.crawl.ParseSegment.main
(ParseSegment.java:110)
Caused by: java.io.IOException: timed out waiting for response
at org.apache.nutch.ipc.Client.call(Client.java:296)
at org.apache.nutch.ipc.RPC$Invoker.invoke(RPC.java:127)
---------------------------------------------------------------
company: http://www.media-style.com
forum: http://www.text-mining.org
blog: http://www.find23.net
-------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc. Do you grep through log files
for problems? Stop! Download the new AJAX search engine that makes
searching your log files as easy as surfing the web. DOWNLOAD SPLUNK!
http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click
_______________________________________________
Nutch-general mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/nutch-general
