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From Pranav Gadekar <ppgadekar...@gmail.com>
Subject Datanode Shutting down automatically
Date Sat, 25 Jan 2014 05:45:53 GMT
This is my log file.

014-01-24 17:24:58,238 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting DataNode
STARTUP_MSG:   host = user/127.0.1.1
STARTUP_MSG:   args = []
STARTUP_MSG:   version = 1.2.1
STARTUP_MSG:   build =
https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.2 -r
1503152; compiled by 'mattf' on Mon Jul 22 15:23:09 PDT 2013
STARTUP_MSG:   java = 1.6.0_27
************************************************************/
2014-01-24 17:24:58,622 INFO org.apache.hadoop.metrics2.impl.MetricsConfig:
loaded properties from hadoop-metrics2.properties
2014-01-24 17:24:58,669 INFO
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source
MetricsSystem,sub=Stats registered.
2014-01-24 17:24:58,670 INFO
org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot
period at 10 second(s).
2014-01-24 17:24:58,670 INFO
org.apache.hadoop.metrics2.impl.MetricsSystemImpl: DataNode metrics system
started
2014-01-24 17:24:58,877 INFO
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi
registered.
2014-01-24 17:24:58,880 WARN
org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Source name ugi already
exists!
2014-01-24 17:25:10,778 ERROR
org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException:
Incompatible namespaceIDs in /app/hadoop/tmp/dfs/data: namenode namespaceID
= 102782159; datanode namespaceID = 1227483104
    at
org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:232)
    at
org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:147)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:414)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:321)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1712)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1651)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1669)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1795)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1812)

2014-01-24 17:25:10,779 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at user/127.0.1.1
************************************************************/
2014-01-24 17:26:13,413 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: STARTUP_MSG:
/************************************************************
STARTUP_MSG: Starting DataNode
STARTUP_MSG:   host = user/127.0.1.1
STARTUP_MSG:   args = []
STARTUP_MSG:   version = 1.2.1
STARTUP_MSG:   build =
https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1.2 -r
1503152; compiled by 'mattf' on Mon Jul 22 15:23:09 PDT 2013
STARTUP_MSG:   java = 1.6.0_27
************************************************************/
2014-01-24 17:26:13,510 INFO org.apache.hadoop.metrics2.impl.MetricsConfig:
loaded properties from hadoop-metrics2.properties
2014-01-24 17:26:13,518 INFO
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source
MetricsSystem,sub=Stats registered.
2014-01-24 17:26:13,518 INFO
org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot
period at 10 second(s).
2014-01-24 17:26:13,518 INFO
org.apache.hadoop.metrics2.impl.MetricsSystemImpl: DataNode metrics system
started
2014-01-24 17:26:13,626 INFO
org.apache.hadoop.metrics2.impl.MetricsSourceAdapter: MBean for source ugi
registered.
2014-01-24 17:26:13,628 WARN
org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Source name ugi already
exists!
2014-01-24 17:26:28,860 ERROR
org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException:
Incompatible namespaceIDs in /app/hadoop/tmp/dfs/data: namenode namespaceID
= 102782159; datanode namespaceID = 1227483104
    at
org.apache.hadoop.hdfs.server.datanode.DataStorage.doTransition(DataStorage.java:232)
    at
org.apache.hadoop.hdfs.server.datanode.DataStorage.recoverTransitionRead(DataStorage.java:147)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.startDataNode(DataNode.java:414)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.<init>(DataNode.java:321)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:1712)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:1651)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:1669)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:1795)
    at
org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:1812)

2014-01-24 17:26:28,860 INFO
org.apache.hadoop.hdfs.server.datanode.DataNode: SHUTDOWN_MSG:
/************************************************************
SHUTDOWN_MSG: Shutting down DataNode at user/127.0.1.1
************************************************************/


Shutdown command is initialised automatically.
Please take a look and respond with a solution.

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