hadoop - Data node demon not running on CDH 4.2.1 pseudo distributed mode -


i running hadoop-2.0.0-cdh4.2.1 on centos in pseudo deistributed mode. when issued command sudo jps don't see datanode demon , running.

below error log got in log file http://localhost:50070/logs/hadoop-hdfs-datanode-localhost.localdomain.log in namenode:

**2015-05-12 04:35:26,319 info org.apache.hadoop.hdfs.server.datanode.datanode: block pool bp-539882958-127.0.0.1-1386722652683 (storage id ds-1842390259-127.0.0.1-50010-1431419699539) service /0.0.0.0:8020 beginning handshake nn 2015-05-12 04:35:28,573 fatal org.apache.hadoop.hdfs.server.datanode.datanode: initialization failed block pool block pool bp-539882958-127.0.0.1-1386722652683 (storage id ds-1842390259-127.0.0.1-50010-1431419699539) service 0.0.0.0/0.0.0.0:8020 java.io.ioexception: failed on local exception: java.io.ioexception: connection reset peer; host details : local host is: "localhost.localdomain/127.0.0.1"; destination host is: "0.0.0.0":8020;  @ org.apache.hadoop.net.netutils.wrapexception(netutils.java:760) @ org.apache.hadoop.ipc.client.call(client.java:1229) @ org.apache.hadoop.ipc.protobufrpcengine$invoker.invoke(protobufrpcengine.java:202) @ $proxy10.registerdatanode(unknown source) @ sun.reflect.nativemethodaccessorimpl.invoke0(native method) @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:39) @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:25) @ java.lang.reflect.method.invoke(method.java:597) @ org.apache.hadoop.io.retry.retryinvocationhandler.invokemethod(retryinvocationhandler.java:164) @ org.apache.hadoop.io.retry.retryinvocationhandler.invoke(retryinvocationhandler.java:83) @ $proxy10.registerdatanode(unknown source) @ org.apache.hadoop.hdfs.protocolpb.datanodeprotocolclientsidetranslatorpb.registerdatanode(datanodeprotocolclientsidetranslatorpb.java:149) @ org.apache.hadoop.hdfs.server.datanode.bpserviceactor.register(bpserviceactor.java:619) @ org.apache.hadoop.hdfs.server.datanode.bpserviceactor.connecttonnandhandshake(bpserviceactor.java:221) @ org.apache.hadoop.hdfs.server.datanode.bpserviceactor.run(bpserviceactor.java:660) @ java.lang.thread.run(thread.java:662) caused by: java.io.ioexception: connection reset peer @ sun.nio.ch.filedispatcher.read0(native method) @ sun.nio.ch.socketdispatcher.read(socketdispatcher.java:21) @ sun.nio.ch.ioutil.readintonativebuffer(ioutil.java:198) @ sun.nio.ch.ioutil.read(ioutil.java:171) @ sun.nio.ch.socketchannelimpl.read(socketchannelimpl.java:243) @ org.apache.hadoop.net.socketinputstream$reader.performio(socketinputstream.java:56) @ org.apache.hadoop.net.socketiowithtimeout.doio(socketiowithtimeout.java:143) @ org.apache.hadoop.net.socketinputstream.read(socketinputstream.java:156) @ org.apache.hadoop.net.socketinputstream.read(socketinputstream.java:129) @ java.io.filterinputstream.read(filterinputstream.java:116) @ java.io.filterinputstream.read(filterinputstream.java:116) @ org.apache.hadoop.ipc.client$connection$pinginputstream.read(client.java:409) @ java.io.bufferedinputstream.fill(bufferedinputstream.java:218) @ java.io.bufferedinputstream.read(bufferedinputstream.java:237) @ java.io.filterinputstream.read(filterinputstream.java:66) @ com.google.protobuf.abstractmessagelite$builder.mergedelimitedfrom(abstractmessagelite.java:276) @ com.google.protobuf.abstractmessage$builder.mergedelimitedfrom(abstractmessage.java:760) @ com.google.protobuf.abstractmessagelite$builder.mergedelimitedfrom(abstractmessagelite.java:288) @ com.google.protobuf.abstractmessage$builder.mergedelimitedfrom(abstractmessage.java:752) @ org.apache.hadoop.ipc.protobuf.rpcpayloadheaderprotos$rpcresponseheaderproto.parsedelimitedfrom(rpcpayloadheaderprotos.java:985) @ org.apache.hadoop.ipc.client$connection.receiveresponse(client.java:938) @ org.apache.hadoop.ipc.client$connection.run(client.java:836) 2015-05-12 04:35:28,578 warn org.apache.hadoop.hdfs.server.datanode.datanode: ending block pool service for: block pool bp-539882958-127.0.0.1-1386722652683 (storage id ds-1842390259-127.0.0.1-50010-1431419699539) service 0.0.0.0/0.0.0.0:8020 2015-05-12 04:35:28,595 info org.apache.hadoop.hdfs.server.datanode.datanode: removed block pool bp-539882958-127.0.0.1-1386722652683 (storage id ds-1842390259-127.0.0.1-50010-1431419699539) 2015-05-12 04:35:28,595 info org.apache.hadoop.hdfs.server.datanode.datablockscanner: removed bpid=bp-539882958-127.0.0.1-1386722652683 blockpoolscannermap 2015-05-12 04:35:28,595 info org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.fsdatasetimpl: removing block pool bp-539882958-127.0.0.1-1386722652683 2015-05-12 04:35:30,597 warn org.apache.hadoop.hdfs.server.datanode.datanode: exiting datanode 2015-05-12 04:35:30,600 info org.apache.hadoop.util.exitutil: exiting status 0 2015-05-12 04:35:30,603 info org.apache.hadoop.hdfs.server.datanode.datanode: shutdown_msg:  /************************************************************ shutdown_msg: shutting down datanode @ localhost.localdomain/127.0.0.1 ************************************************************/**


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