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POIn hadoop cluster adding new datanode
 

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  1. POIn hadoop cluster adding new datanode
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    <p>I have setup 3 node cluster which is working fine. Now i want to add one more node to this cluster.I tried but new node is not adding to cluster. My question is where can I find exception msgs for such issue. One more in new node if I start data-node daemon it will start but if I connect to cluster the name node is stopping data-node daemon. Because I guess some configuration or directory permission problem so how can I find out those errors ? which log file those errors are available?</p> <p>Exception:--------------</p> <pre><code>013-06-14 18:20:33,987 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: NameNode up at: master/192.168.0.135:8020 2013-06-14 18:20:33,988 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Starting services required for active state 2013-06-14 18:20:34,371 ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:hdfs (auth:SIMPLE) cause:org.apache.hadoop.hdfs.server.namenode.SafeModeException: Log not rolled. Name node is in safe mode. The reported blocks 0 needs additional 374 blocks to reach the threshold 0.9990 of total blocks 374. Safe mode will be turned off automatically. 2013-06-14 18:20:34,371 INFO org.apache.hadoop.ipc.Server: IPC Server handler 1 on 8020, call org.apache.hadoop.hdfs.server.protocol.NamenodeProtocol.rollEditLog from 192.168.0.115:33532: error: org.apache.hadoop.hdfs.server.namenode.SafeModeException: Log not rolled. Name node is in safe mode. The reported blocks 0 needs additional 374 blocks to reach the threshold 0.9990 of total blocks 374. Safe mode will be turned off automatically. org.apache.hadoop.hdfs.server.namenode.SafeModeException: Log not rolled. Name node is in safe mode. The reported blocks 0 needs additional 374 blocks to reach the threshold 0.9990 of total blocks 374. Safe mode will be turned off automatically. at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.rollEditLog(FSNamesystem.java:4433) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.rollEditLog(NameNodeRpcServer.java:734) at org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolServerSideTranslatorPB.rollEditLog(NamenodeProtocolServerSideTranslatorPB.java:129) at org.apache.hadoop.hdfs.protocol.proto.NamenodeProtocolProtos$NamenodeProtocolService$2.callBlockingMethod(NamenodeProtocolProtos.java:8762) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:898) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1693) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1689) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687) 2013-06-14 18:21:34,395 ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:hdfs (auth:SIMPLE) cause:org.apache.hadoop.hdfs.server.namenode.SafeModeException: Log not rolled. Name node is in safe mode. The reported blocks 0 needs additional 374 blocks to reach the threshold 0.9990 of total blocks 374. Safe mode will be turned off automatically. 2013-06-14 18:21:34,395 INFO org.apache.hadoop.ipc.Server: IPC Server handler 4 on 8020, call org.apache.hadoop.hdfs.server.protocol.NamenodeProtocol.rollEditLog from 192.168.0.115:33534: error: org.apache.hadoop.hdfs.server.namenode.SafeModeException: Log not rolled. Name node is in safe mode. The reported blocks 0 needs additional 374 blocks to reach the threshold 0.9990 of total blocks 374. Safe mode will be turned off automatically. org.apache.hadoop.hdfs.server.namenode.SafeModeException: Log not rolled. Name node is in safe mode. The reported blocks 0 needs additional 374 blocks to reach the threshold 0.9990 of total blocks 374. Safe mode will be turned off automatically. at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.rollEditLog(FSNamesystem.java:4433) at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.rollEditLog(NameNodeRpcServer.java:734) at org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolServerSideTranslatorPB.rollEditLog(NamenodeProtocolServerSideTranslatorPB.java:129) at org.apache.hadoop.hdfs.protocol.proto.NamenodeProtocolProtos$NamenodeProtocolService$2.callBlockingMethod(NamenodeProtocolProtos.java:8762) at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:898) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1693) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1689) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1687) </code></pre>
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