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Re: Building LZO on hadoop - Hadoop - [mail # user]
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...Fixed. In the configure script src/native/ change echo 'int main(int argc, char **argv){return 0;}' > conftest.c if test -z "`${CC} ${LDFLAGS} -o conftest conftest.c -llzo2 2...
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Author: Saptarshi Guha,
2009-04-01, 19:55
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Building LZO on hadoop - Hadoop - [mail # user]
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...I checked out hadoop-core-0.19 export CFLAGS=$CUSTROOT/include export LDFLAGS=$CUSTROOT/lib (they contain lzo which was built with --shared) lzo1a.h lzo1b.h lzo1c.h l...
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Author: Saptarshi Guha,
2009-04-01, 18:29
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Re: X not in slaves, yet still being used as a tasktracker - Hadoop - [mail # user]
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...Aha,there isn't a tasktracker running on X, yet jps shows 4 children and when jobs fail i see failures on X too. So what exactly can I stop? jps output on X 20044 org.apache.hadoop.mapred.Jo...
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Author: Saptarshi Guha,
2009-03-31, 17:51
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X not in slaves, yet still being used as a tasktracker - Hadoop - [mail # user]
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...Hello, A machine X which is the master: it is the jobtracker, namenode and secondary namenode. It is not in the slaves file and is not part of the HDFSHowever in the mapreduce web page...
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Author: Saptarshi Guha,
2009-03-29, 16:00
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Re: JNI and calling Hadoop jar files - Hadoop - [mail # user]
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...Delayed response. However, I stand corrected. I was using a package called rJava which integrates R and java. Maybe there was a classloader issue but once I rewrote my stuff using C and JNI,...
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Author: Saptarshi Guha,
2009-03-27, 19:51
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JNI and calling Hadoop jar files - Hadoop - [mail # user]
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...Hello, I'm using some JNI interfaces, via a R. My classpath contains all the jar files in $HADOOP_HOME and $HADOOP_HOME/lib My class is public SeqKeyList() throws Exception { &...
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Author: Saptarshi Guha,
2009-03-24, 02:12
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Task Side Effect files and copying(getWorkOutputPath) - Hadoop - [mail # user]
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...Hello, I would like to produce side effect files which will be later copied to the outputfolder. I am using FileOuputFormat, and in the Map's close() method i copy files (from the local tmp/...
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Author: Saptarshi Guha,
2009-03-16, 15:59
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Throwing an IOException in Map, yet task does not fail - Hadoop - [mail # user]
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...Hello, I have given a case where my mapper should fail. That is, based on a result it throws an exception if(res==0) throw new IOException("Error in code!, see stderr/out"); , When i go to t...
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Author: Saptarshi Guha,
2009-03-06, 02:42
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Throw an exception if the configure method fails - Hadoop - [mail # user]
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...hello, I'm not that comfortable with java, so here is my question. In the MapReduceBase class, i have implemented the configure method, which does not throw an exception. Suppose I detect an...
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Author: Saptarshi Guha,
2009-03-06, 00:24
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Re: Mapreduce jobconf options:webpage - Hadoop - [mail # user]
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...Thank you Saptarshi Guha On Thu, Mar 5, 2009 at 6:56 PM, james warren wrote: your wrote:...
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Author: Saptarshi Guha,
2009-03-06, 00:20
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