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From Praveen Bathala <pbatha...@gmail.com>
Subject Mapreduce Exceptions with hadoop 0.20.2
Date Fri, 10 Dec 2010 02:09:36 GMT
Hi,

I am running Mapreduce job to get some emails out of a huge text file.
I used to use hadoop 0.19 version and I had no issues, now I am using the
hadoop 0.20.2 and when I run my hadoop mapreduce job I see the log as job
failed and in the jobtracker log

Can someone please help me..

2010-12-09 20:53:00,399 INFO org.apache.hadoop.mapred.JobTracker: problem
cleaning system directory:
hdfs://localhost:9000/home/praveen/hadoop/temp/mapred/system
org.apache.hadoop.ipc.RemoteException:
org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete
/home/praveen/hadoop/temp/mapred/system. Name node is in safe mode.
The ratio of reported blocks 0.0000 has not reached the threshold 0.9990.
Safe mode will be turned off automatically.
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.deleteInternal(FSNamesystem.java:1700)
        at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.delete(FSNamesystem.java:1680)
        at
org.apache.hadoop.hdfs.server.namenode.NameNode.delete(NameNode.java:517)
        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.ipc.RPC$Server.call(RPC.java:508)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:396)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)

 at org.apache.hadoop.ipc.Client.call(Client.java:740)
        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
        at $Proxy4.delete(Unknown Source)
        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.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
        at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
        at $Proxy4.delete(Unknown Source)
        at org.apache.hadoop.hdfs.DFSClient.delete(DFSClient.java:582)
        at
org.apache.hadoop.hdfs.DistributedFileSystem.delete(DistributedFileSystem.java:227)
        at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:1695)
        at
org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:183)
        at
org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:175)
        at org.apache.hadoop.mapred.JobTracker.main(JobTracker.java:3702)
2010-12-09 20:53:10,405 INFO org.apache.hadoop.mapred.JobTracker: Cleaning
up the system directory
2010-12-09 20:53:10,409 INFO org.apache.hadoop.mapred.JobTracker: problem
cleaning system directory:
hdfs://localhost:9000/home/praveen/hadoop/temp/mapred/system


Thanks in advance
+ Praveen

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