umer safeer umer safeer - 13 days ago 11
Apache Configuration Question

unable to start hive on master node :SafeMode Exception

when i run this command on master note in

hadoop
hdumer@HadoopMaster:~$ hive


However Hadoop multinode is working fine

it shows following errors:


Logging initialized using configuration in
jar:file:/usr/local/apache-hive-1.2.1-bin/lib/hive-common-1.2.1.jar!/hive-log4j.properties
Exception in thread "main" java.lang.RuntimeException:
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.SafeModeException):
Cannot create directory
/tmp/hive/hdumer/d2562e13-52c9-440d-9fe1-54b66b90ed1d. Name node is in
safe mode. The reported blocks 143 needs additional 7 blocks to reach
the threshold 0.9990 of total blocks 150. The number of live datanodes
1 has reached the minimum number 0. Safe mode will be turned off
automatically once the thresholds have been reached. at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkNameNodeSafeMode(FSNamesystem.java:1327)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:3893)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:983)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:622)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969) at
org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049) at
org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045) at
java.security.AccessController.doPrivileged(Native Method) at
javax.security.auth.Subject.doAs(Subject.java:422) at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043)

at
org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:522)
at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:677) at
org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:621) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.apache.hadoop.util.RunJar.run(RunJar.java:221) at
org.apache.hadoop.util.RunJar.main(RunJar.java:136)


Caused by:


org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.server.namenode.SafeModeException):
Cannot create directory
/tmp/hive/hdumer/d2562e13-52c9-440d-9fe1-54b66b90ed1d. Name node is in
safe mode. The reported blocks 143 needs additional 7 blocks to reach
the threshold 0.9990 of total blocks 150. The number of live datanodes
1 has reached the minimum number 0. Safe mode will be turned off
automatically once the thresholds have been reached. at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkNameNodeSafeMode(FSNamesystem.java:1327)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:3893)
at
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:983)
at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:622)
at
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:616)
at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:969) at
org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2049) at
org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2045) at
java.security.AccessController.doPrivileged(Native Method) at
javax.security.auth.Subject.doAs(Subject.java:422) at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2043)

at org.apache.hadoop.ipc.Client.call(Client.java:1475) at
org.apache.hadoop.ipc.Client.call(Client.java:1412) at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:229)
at com.sun.proxy.$Proxy15.mkdirs(Unknown Source) at
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.mkdirs(ClientNamenodeProtocolTranslatorPB.java:558)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:191)
at
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)
at com.sun.proxy.$Proxy16.mkdirs(Unknown Source) at
org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:3000)
at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:2970) at
org.apache.hadoop.hdfs.DistributedFileSystem$21.doCall(DistributedFileSystem.java:1047)
at
org.apache.hadoop.hdfs.DistributedFileSystem$21.doCall(DistributedFileSystem.java:1043)
at
org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at
org.apache.hadoop.hdfs.DistributedFileSystem.mkdirsInternal(DistributedFileSystem.java:1043)
at
org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:1036)
at
org.apache.hadoop.hive.ql.session.SessionState.createPath(SessionState.java:639)
at
org.apache.hadoop.hive.ql.session.SessionState.createSessionDirs(SessionState.java:574)
at
org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:508)
... 8 more

Answer

You are getting getting safemode exception. So to get out from safemode Use:

hadoop dfsadmin -safemode leave