Hi,   I am using CDH 5.8 VM in Virtualbox and I am getting exception in my first excersie. It is quite frustrating as I am new to Hadoop and want to learn. Thought VM would be the safest thing to start.   VM configuration is 1CPU and 4GB RAM.   Here is the command:   [cloudera@quickstart ~]$ sqoop import-all-tables \ >     -m 1 \ >     --connect jdbc:mysql://quickstart:3306/retail_db \ >     --username=retail_dba \ >     --password=cloudera \ >     --compression-codec=snappy \ >     --as-parquetfile \ >     --warehouse-dir=/user/hive/warehouse \ >     --hive-import       And the exception:   17/03/09 03:27:13 INFO hive.HiveManagedMetadataProvider: Creating a managed Hive table named: categories 17/03/09 03:27:13 INFO hive.metastore: Closed a connection to metastore, current connections: 0 17/03/09 03:27:13 INFO hive.metastore: Trying to connect to metastore with URI thrift://127.0.0.1:9083 17/03/09 03:27:13 INFO hive.metastore: Opened a connection to metastore, current connections: 1 17/03/09 03:27:13 INFO hive.metastore: Connected to metastore. 17/03/09 03:27:13 INFO hive.metastore: Closed a connection to metastore, current connections: 0 17/03/09 03:27:13 INFO hive.metastore: Trying to connect to metastore with URI thrift://127.0.0.1:9083 17/03/09 03:27:13 INFO hive.metastore: Opened a connection to metastore, current connections: 1 17/03/09 03:27:13 INFO hive.metastore: Connected to metastore. 17/03/09 03:27:13 ERROR sqoop.Sqoop: Got exception running Sqoop: org.kitesdk.data.DatasetOperationException: Hive MetaStore exception org.kitesdk.data.DatasetOperationException: Hive MetaStore exception     at org.kitesdk.data.spi.hive.MetaStoreUtil.createTable(MetaStoreUtil.java:252)     at org.kitesdk.data.spi.hive.HiveManagedMetadataProvider.create(HiveManagedMetadataProvider.java:87)     at org.kitesdk.data.spi.hive.HiveManagedDatasetRepository.create(HiveManagedDatasetRepository.java:81)     at org.kitesdk.data.Datasets.create(Datasets.java:239)     at org.kitesdk.data.Datasets.create(Datasets.java:307)     at org.apache.sqoop.mapreduce.ParquetJob.createDataset(ParquetJob.java:141)     at org.apache.sqoop.mapreduce.ParquetJob.configureImportJob(ParquetJob.java:119)     at org.apache.sqoop.mapreduce.DataDrivenImportJob.configureMapper(DataDrivenImportJob.java:130)     at org.apache.sqoop.mapreduce.ImportJobBase.runImport(ImportJobBase.java:267)     at org.apache.sqoop.manager.SqlManager.importTable(SqlManager.java:692)     at org.apache.sqoop.manager.MySQLManager.importTable(MySQLManager.java:127)     at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:507)     at org.apache.sqoop.tool.ImportAllTablesTool.run(ImportAllTablesTool.java:111)     at org.apache.sqoop.Sqoop.run(Sqoop.java:143)     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)     at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:179)     at org.apache.sqoop.Sqoop.runTool(Sqoop.java:218)     at org.apache.sqoop.Sqoop.runTool(Sqoop.java:227)     at org.apache.sqoop.Sqoop.main(Sqoop.java:236) Caused by: MetaException(message:Got exception: org.apache.hadoop.ipc.RemoteException Cannot create directory /user/hive/warehouse/categories. Name node is in safe mode. The reported blocks 908 needs additional 4 blocks to reach the threshold 0.9990 of total blocks 912. 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:1446)     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInt(FSNamesystem.java:4318)     at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:4293)     at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:869)     at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.mkdirs(AuthorizationProviderProxyClientProtocol.java:323)     at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:608)     at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)     at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617)     at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073)     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2086)     at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2082)     at java.security.AccessController.doPrivileged(Native Method)     at javax.security.auth.Subject.doAs(Subject.java:415)     at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1693)     at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2080) )     at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$create_table_with_environment_context_result$create_table_with_environment_context_resultStandardScheme.read(ThriftHiveMetastore.java:30072)     at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$create_table_with_environment_context_result$create_table_with_environment_context_resultStandardScheme.read(ThriftHiveMetastore.java:30040)     at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$create_table_with_environment_context_result.read(ThriftHiveMetastore.java:29966)     at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:86)     at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.recv_create_table_with_environment_context(ThriftHiveMetastore.java:1079)     at org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.create_table_with_environment_context(ThriftHiveMetastore.java:1065)     at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.create_table_with_environment_context(HiveMetaStoreClient.java:2077)     at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.createTable(HiveMetaStoreClient.java:674)     at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.createTable(HiveMetaStoreClient.java:662)     at org.kitesdk.data.spi.hive.MetaStoreUtil$4.call(MetaStoreUtil.java:230)     at org.kitesdk.data.spi.hive.MetaStoreUtil$4.call(MetaStoreUtil.java:227)     at org.kitesdk.data.spi.hive.MetaStoreUtil.doWithRetry(MetaStoreUtil.java:70)     at org.kitesdk.data.spi.hive.MetaStoreUtil.createTable(MetaStoreUtil.java:242)     ... 18 more   Thanks. ... 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