Does anyone have any inputs on this? Was waiting to hear from someone out there...
Any help would be most appreciated. On Wed, Jul 27, 2011 at 4:55 PM, Decimus Phostle <decimusphos...@gmail.com> wrote: > Hello Folks, > > I am trying to run a simplistic Hadoop pipes program (the typical > wordcount example). Unfortunately I am seeing a bunch of errors while > running it as follows: > > $ bin/hadoop pipes -Dhadoop.pipes.java.recordreader=true \ > -Dhadoop.pipes.java.recordwriter=true \ > -input <inputHDFSPath> \ > -output <outputHDFSPath> \ > -program <cppBinaryHDFSPath> > > This is resulting in a NullPointerException: > > java.io.IOException: pipe child exception > at > org.apache.hadoop.mapred.pipes.Application.abort(Application.java:160) > at > org.apache.hadoop.mapred.pipes.PipesMapRunner.run(PipesMapRunner.java:102) > at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:397) > at org.apache.hadoop.mapred.MapTask.run(MapTask.java:330) > at org.apache.hadoop.mapred.Child$4.run(Child.java:217) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:396) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:742) > at org.apache.hadoop.mapred.Child.main(Child.java:211) > Caused by: java.lang.NullPointerException > at > org.apache.hadoop.mapred.pipes.PipesMapRunner.run(PipesMapRunner.java:86) > ... 7 more > > More details have been posted here: http://goo.gl/GMy8Q > > It would be great if someone could point me in the right direction. > Thanks in advance!! > > Regards, > DP >
