You need to configure Giraph not to split workers and master via giraph.SplitMasterWorker=false
You can either set it in giraph-site.xml or pass via command line option -ca giraph.SplitMasterWorker=false Thanks, Roman. On Sat, Feb 22, 2014 at 10:19 PM, Arun Kumar <toga...@gmail.com> wrote: > While running Giraph over Hadoop 2.2 I am getting the below exception > > > > > > 14/02/20 04:52:44 INFO Configuration.deprecation: mapred.job.tracker is > deprecated. Instead, use mapreduce.jobtracker.address > > Exception in thread "main" java.lang.IllegalArgumentException: > checkLocalJobRunnerConfiguration: When using LocalJobRunner, you cannot run > in split master / worker mode since there is only 1 task at a time! > > at > org.apache.giraph.job.GiraphJob.checkLocalJobRunnerConfiguration(GiraphJob.java:157) > > at org.apache.giraph.job.GiraphJob.run(GiraphJob.java:225) > > at org.apache.giraph.GiraphRunner.run(GiraphRunner.java:94) > > at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) > > at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:84) > > at > org.apache.giraph.GiraphRunner.main(GiraphRunner.java:124) > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native > Method) > > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > > at java.lang.reflect.Method.invoke(Method.java:597) > > at org.apache.hadoop.util.RunJar.main(RunJar.java:212) > > > > > > One of the solution found in the archive was to modify > /directory-to-hadoop/conf/mapred-site.xml with: > > > > <property> > > <name>mapred.tasktracker.map.tasks.maximum</name> > > <value>4</value> > > </property> > > > > <property> > > <name>mapred.map.tasks</name> > > <value>4</value> > > </property> > > > > But in my case it did not work.. > > > Can somebody help? > > > Regards > > -Arun
