This sounds like:
http://issues.apache.org/jira/browse/HADOOP-534
A patch should be committed to trunk tomorrow, and a point release will
be made shortly thereafter. In the meantime, you could experiment with
the 0.5.0 release.
Doug
Aaron Wong wrote:
Hi,
I'm new to hadoop. I was going through the steps on standalone operation
under API docs where I encountered the below error.
06/09/15 10:42:12 INFO conf.Configuration: parsing file:/opt/hadoop-0.6.0
/conf/hadoop-site.xml
06/09/15 10:42:12 INFO mapred.MapTask: opened part-0.out
06/09/15 10:42:12 WARN mapred.LocalJobRunner: job_cjfbkn
java.io.IOException: wrong value class: dfs.block.size is not class
org.apache.hadoop.io.UTF8
at org.apache.hadoop.io.SequenceFile$Writer.append(SequenceFile.java
:533)
at org.apache.hadoop.mapred.MapTask$2.collect(MapTask.java:162)
at org.apache.hadoop.mapred.lib.InverseMapper.map(InverseMapper.java
:37)
at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:46)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:210)
at org.apache.hadoop.mapred.LocalJobRunner$Job.run(
LocalJobRunner.java:106)
java.io.IOException: Job failed!
at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:363)
at org.apache.hadoop.examples.Grep.main(Grep.java:82)
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:585)
at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(
ProgramDriver.java:69)
at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java
:141)
at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java
:41)
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:585)
at org.apache.hadoop.util.RunJar.main(RunJar.java:137)
Can somebody point me in the right direction?
Thanks
Ron
