Hi Team, Pls check this and let me your comment(s) .. --Senthil
On Aug 4, 2016 7:22 PM, "Senthil Kumar" <senthilec...@gmail.com> wrote: > Hi Team , > > > Current HDFS NFS gateway Supports exporting only one Directory.. > > Example : > <property> > <name>nfs.export.point</name> > <value>/user</value> > </property> > > This property helps us to export particular directory .. > > Code Block : > > public RpcProgramMountd(NfsConfiguration config, > DatagramSocket registrationSocket, boolean allowInsecurePorts) > throws IOException > { // Note that RPC cache is not enabled super("mountd", "localhost", > config.getInt( NfsConfigKeys.DFS_NFS_MOUNTD_PORT_KEY, > NfsConfigKeys.DFS_NFS_MOUNTD_PORT_DEFAULT), PROGRAM, VERSION_1, > VERSION_3, registrationSocket, allowInsecurePorts); exports = new > ArrayList<String>(); > exports.add(config.get(NfsConfigKeys.DFS_NFS_EXPORT_POINT_KEY, > NfsConfigKeys.DFS_NFS_EXPORT_POINT_DEFAULT)); this.hostsMatcher = > NfsExports.getInstance(config); this.mounts = > Collections.synchronizedList(new ArrayList<MountEntry>()); > UserGroupInformation.setConfiguration(config); SecurityUtil.login(config, > NfsConfigKeys.DFS_NFS_KEYTAB_FILE_KEY, > NfsConfigKeys.DFS_NFS_KERBEROS_PRINCIPAL_KEY); > this.dfsClient = new DFSClient(NameNode.getAddress(config), config); } > > Export List: > exports.add(config.get(NfsConfigKeys.DFS_NFS_EXPORT_POINT_KEY, > NfsConfigKeys.DFS_NFS_EXPORT_POINT_DEFAULT)); > > Current Code is supporting only one directory to be exposed ... Based on > our example /user can be exported .. > > Most of the production environment expects more number of directories > should be exported and the same can be mounted for different clients.. > > Example: > > <property> > <name>nfs.export.point</name> > <value>/user,/data/web_crawler,/app-logs</value> > </property> > > Here i have three directories to be exposed .. > > 1) /user > 2) /data/web_crawler > 3) /app-logs > > This would help us to mount directories for particular client ( Say client > A wants to write data in /app-logs - Hadoop Admin can mount and handover to > clients ). > > Please advise here.. > > > Have created JIRA for this issue : https://issues.apache.org/ > jira/browse/HDFS-10721. > > > --Senthil >