hdfs haadmin -failover [--forcefence] [--forceactive] <serviceId> <serviceId> #在两个namenodes之间启动故障转移 hdfs haadmin -getServiceState <serviceId> #确定给定的namenode是活动的还是备用的 hdfs haadmin -help hdfs haadmin -transitionToActive <serviceId> [--forceactive] #将给定namenode...
其他接口:主要包括安全相关的RefreshAuthorizationPolicyProtocol、RefreshUserMappingsProtocol,HA相关的接口HAServiceProtocol等。 接下来一一介绍。 1、ClientProtocol ClientProtocol定义了所有由客户端发起,由NameNode响应的操作。这个接口非常大,大概80几个方法: 查看代码 查看代码 /** * Licensed to the Apache Software ...
Collection<String> targetIds = getTargetIds(null); if (targetIds.isEmpty()) { errOut.println("Failed to get service IDs"); return -1; } // TODO 其实targetIds这里应该是nn1和nn2 for (String targetId : targetIds) { // TODO 在这里会解析nameserviceId,其实就是上面的nnCluster,这个也是配...
getRenewer()); } DelegationKey key = getDelegationKey(id.getMasterKeyId()); if (key == null) { throw new InvalidToken( "Unable to find master key for keyId=" + id.getMasterKeyId() + " from cache. Failed to renew an unexpired token " + formatTokenId(id) + " with sequence...
ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call to … failed on local exception: .NoRouteToHostException: No route to host 解决办法: 1. 2. 关闭防火墙 service iptables stop 1. 机器重启后,防火墙还会开启。
hdfs haadmin -checkHealth <serviceId> #检查给定namenode的运行状况 hdfs haadmin -failover [--forcefence] [--forceactive] <serviceId> <serviceId> #在两个namenodes之间启动故障转移 hdfs haadmin -getServiceState <serviceId> #确定给定的namenode是活动的还是备用的 hdfs haadmin -help hdfs haadm...
("Failed to initialize storage directory "+locationString+". Exception details: "+ioe);// Ignore the exception.continue;}catch(SecurityException se){LOG.error("Failed to initialize storage directory "+locationString+". Exception details: "+se);// Ignore the exception.continue;}// 将解析好的...
用法:``hdfs jmxget [-localVM ConnectorURL | -port port | -server mbeanserver | -service service]` 从一个服务中转储JMX信息。 2.11 oev(offline edits viewer) 用法:hdfs oev [OPTIONS] -i INPUT_FILE -o OUTPUT_FILE Required command line arguments: ...
getServiceState | 确定给定的NameNode是Active还是Standby | | | -getAllServiceState | 返回所有NameNode的状态 | | | -transitionToActive | 将给定NameNode的状态转换为Active(警告:不执行防护) | | | -transitionToStandby | 将给定NameNode的状态转换为Standby(警告:没有完成防护) | | | -help [cmd]...
用法: hdfs jmxget [-localVM ConnectorURL | -port port | -server mbeanserver | -service service] COMMAND_OPTIONDescription -help print help -localVM ConnectorURL connect to the VM on the same machine -port mbean server port specify mbean server port, if missing it will try to connect to...