hdfs client分析:hdfs dfs -get 上接前两篇,再来分析下下载文件的过程hdfs dfs -get 或 hdfs dfs -copyToLocal 先找到命令get和copyToLocal对应的类 publicstaticvoidregisterCommands(CommandFactoryfactory){factory.registerCommands(AclCommands.class);factory.registerCommands(CopyCommands.class);factory.registerCom...
-libjars <comma separated list of jars> specify comma separated jar files to include in the classpath. -archives <comma separated list of archives> specify comma separated archives to be unarchived on the compute machines. The general command line syntax is bin/hadoop command [genericOptions] [c...
84 inputStream = hdfs.open(new Path(hdfsFile + File.separator + inputFiles[i].getPath().getName().substring(0, inputFiles[i].getPath().getName().indexOf("."))); 85 byte[] buffer = new byte[1024]; 86 int len; 87 while((len = inputStream.read(buffer)) > 0){ 88 gzipOutput...
Hadoop源码分析:HDFS读取文件 oldIter.next().getBlock().equals(newIter.next().getBlock())) { throw new IOException("Blocklist...} return -1; } final long len = readBlockLength(last); last.getBlock 1.6K60 Trc20 区块链 0a020f35220844fe35c41476ee6c4098cad0b8ae2f5a65080112610a2d74797065...
Fi-Ware Cosmos: Name node is in safe mode I am trying to delete a folder in my Cosmos account, but I get the SafeModeException: # hadoop fs -rmr /home/<user>/input rmr: org.apache.hadoop.hdfs.server.namenode.SafeModeException: Cannot de... ...
hbase(main):001:0> list TABLE ERROR: Can't get master address from ZooKeeper; znode data == null Here is some help for this command: List all tables in hbase. Optional regular expression parameter could be used to filter the output. Examples: hbase> list hbase> list 'abc.*' hbase...
general commands Command list: status, table_help, version, whoami 1.查看整理的状态 hbase(main):原HBase 常用Shell命令 HBase 常用Shell命令 1.进入hbase shell console $HBASE_HOME/bin/hbase shell 如果有kerberos认证,需要事先使用相应的keytab进行一下认证(使用kinit命令),认证成功之后再使用hbase ...
第一次我在OnstartCommand上开始使用Main Activitive和Services类中的服务,我称之为通知方法。 之后,我从JavaScript(JS接口)调用通知方法。 看答案 Context.getApplicationContext().getResources()返回a资源对象,因此您可以将其存储在其中: Resources res = getApplicationContext().getResources();...
Based on the remote location,scheme_namecan be one of the values in this table. Remote Locationscheme_name Amazon S3™s3 Windows Azure®Blob Storagewasb,wasbs HDFS™hdfs For more information, seeWork with Remote Data. Example:'s3://bucketname/path_to_file/my_file.xlsx' ...
3. Login to the Sandbox VM and use ifconfig command to get its ip address, in my case 192.168.99.100 4. add an entry in /etc/hosts on my host machine, in my case: 192.168.99.100 sandbox.hortonworks.com 5. check connectivity by telnet: telnet sandbox.hort...