FAQ
Hi ALL,
I am getting this error in JobTracker's log file. But when i
format my namenode the error doesnt comes. But i can run hadoop only once.
If i run it the second time the same error comes. Any clues??
Also, i have put nothing in HDFS right now. I just start all the processes
and the error comes.

INFO org.apache.hadoop.mapred.JobTracker: problem cleaning system directory:
hdfs://localhost:54310/usr/local/hadoop-datastore/hadoop-hadoop/m$
org.apache.hadoop.ipc.RemoteException:
org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete
/usr/local/hadoop-datastore/hadoop-hadoop/mapred/system$
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:221)
at $Proxy4.delete(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)


Ahmad

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  • Rajesh Balamohan at Aug 7, 2010 at 3:10 am
    The following command will switch off safemode.

    ./hadoop dfsadmin -safemode leave
    On Thu, Aug 5, 2010 at 12:02 AM, Ahmad Shahzad wrote:

    Hi ALL,
    I am getting this error in JobTracker's log file. But when i
    format my namenode the error doesnt comes. But i can run hadoop only once.
    If i run it the second time the same error comes. Any clues??
    Also, i have put nothing in HDFS right now. I just start all the processes
    and the error comes.

    INFO org.apache.hadoop.mapred.JobTracker: problem cleaning system
    directory:
    hdfs://localhost:54310/usr/local/hadoop-datastore/hadoop-hadoop/m$
    org.apache.hadoop.ipc.RemoteException:
    org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot delete
    /usr/local/hadoop-datastore/hadoop-hadoop/mapred/system$
    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:221)
    at $Proxy4.delete(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)


    Ahmad


    --
    ~Rajesh.B

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groupcommon-dev @
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postedAug 4, '10 at 6:33p
activeAug 7, '10 at 3:10a
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websitehadoop.apache.org...
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Rajesh Balamohan: 1 post Ahmad Shahzad: 1 post

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