java.io.IOException：作业失败了！使用hadoop-0.19.1在我的osx上运行示例应用程序时

bash-3.2$ echo $JAVA_HOME
/System/Library/Frameworks/JavaVM.framework/Versions/1.6/Home
bash-3.2$ bin/hadoop dfs -copyFromLocal conf /user/yokkom/input2
bash-3.2$ bin/hadoop jar hadoop-*-examples.jar grep input2 output 'dfs[a-z.]+'
09/04/17 10:09:32 INFO mapred.FileInputFormat: Total input paths to process : 10
09/04/17 10:09:33 INFO mapred.JobClient: Running job: job_200904171309_0001
java.io.IOException: Job failed!
        at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1232)
        at org.apache.hadoop.examples.Grep.run(Grep.java:69)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.examples.Grep.main(Grep.java:93)
        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.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
        at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:141)
        at org.apache.hadoop.examples.ExampleDriver.main(ExampleDriver.java:61)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:165)
        at org.apache.hadoop.mapred.JobShell.run(JobShell.java:54)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
        at org.apache.hadoop.mapred.JobShell.main(JobShell.java:68)
bash-3.2$ echo $JAVA_HOME
/System/Library/Frame