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https://issues.apache.org/jira/browse/MAHOUT-1367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13835560#comment-13835560
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Suneel Marthi commented on MAHOUT-1367:
---------------------------------------
I have not been able to reproduce the original problem that was reported here,
but looking at the code see that no validation is being done for the input bulk
file to determine if it exists before trying to read from the file. That check
should prevent NPE like the ones reported here from being thrown.
> WikipediaXmlSplitter --> Exception in thread "main"
> java.lang.NullPointerException
> ----------------------------------------------------------------------------------
>
> Key: MAHOUT-1367
> URL: https://issues.apache.org/jira/browse/MAHOUT-1367
> Project: Mahout
> Issue Type: Bug
> Environment: ubuntu
> Reporter: ollagnier
> Priority: Minor
> Fix For: 0.8
>
>
> Hi !
> When I run this command : $MAHOUT_HOME/bin/mahout
> org.apache.mahout.text.wikipedia.WikipediaXmlSplitter -d
> frwiki-latest-pages-articles.xml.bz2 -o wikipedia-xml-chunks -c 100
> I have this error :
> MAHOUT-JOB:
> /home/ollagnier/Documents/tools/mahout-distribution-0.8/bin/trunk/examples/target/mahout-examples-0.9-SNAPSHOT-job.jar
> 13/11/29 14:51:08 WARN driver.MahoutDriver: No
> org.apache.mahout.text.wikipedia.WikipediaXmlSplitter.props found on
> classpath, will use command-line arguments only
> 13/11/29 14:51:08 WARN util.NativeCodeLoader: Unable to load native-hadoop
> library for your platform... using builtin-java classes where applicable
> Exception in thread "main" java.lang.NullPointerException
> at
> org.apache.hadoop.io.compress.bzip2.Bzip2Factory.isNativeBzip2Loaded(Bzip2Factory.java:54)
> at
> org.apache.hadoop.io.compress.bzip2.Bzip2Factory.getBzip2Decompressor(Bzip2Factory.java:131)
> at
> org.apache.hadoop.io.compress.BZip2Codec.createDecompressor(BZip2Codec.java:250)
> at
> org.apache.hadoop.io.compress.BZip2Codec.createInputStream(BZip2Codec.java:156)
> at
> org.apache.mahout.text.wikipedia.WikipediaXmlSplitter.main(WikipediaXmlSplitter.java:190)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at
> org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:72)
> at org.apache.hadoop.util.ProgramDriver.run(ProgramDriver.java:144)
> at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:152)
> at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:195)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
> And I have a little trouble seeing where it comes from
> Thank you for your help
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