| 6 | |
| 7 | * 下一個範例我們使用了一個 jar 的技巧,直接修改 |
| 8 | |
| 9 | {{{ |
| 10 | lab003/FsShell |
| 11 | }}} |
| 12 | |
| 13 | |
| 14 | Excercise: |
| 15 | (1) What is the result of Path.CUR_DIR ? |
| 16 | (2) In local mode, which class is srcFs object ? |
| 17 | (3) In full distributed mode, which class is srcFs object ? |
| 18 | (4) Which classes are updated in hadoop-core-*.jar according to the difference between two jar files? |
| 19 | (5) Please observe the source code architecture in ${HOME}/hadoop/src/core/org/apache/hadoop/fs. |
| 20 | Which File Systems are supported by Hadoop 1.0.4? |
| 21 | (A) HDFS (hdfs://namenode:port) |
| 22 | (B) Amazon S3 (s3:// , s3n://) |
| 23 | (C) KFS |
| 24 | (D) Local File System (file:///) |
| 25 | (F) FTP (ftp://user:passwd@ftp-server:port) |
| 26 | (G) RAMFS (ramfs://) |
| 27 | (H) HAR (Hadoop Archive Filesystem, har://underlyingfsscheme-host:port/archivepath or har:///archivepath ) |
| 28 | |
| 29 | {{{ |
| 30 | cd ~/hadoop_labs/lab004 |
| 31 | ant |
| 32 | hadoop fs -ls |
| 33 | hadoop jar copyFromLocal.jar doc input |
| 34 | hadoop fs -ls |
| 35 | touch test |
| 36 | hadoop jar copyFromLocal.jar test file |
| 37 | hadoop fs -ls |
| 38 | |
| 39 | export HADOOP_CONF_DIR=~/hadoop/conf.local/ |
| 40 | hadoop fs -ls |
| 41 | hadoop jar copyFromLocal.jar doc input |
| 42 | hadoop fs -ls |
| 43 | hadoop jar copyFromLocal.jar test file |
| 44 | hadoop fs -ls |
| 45 | unset HADOOP_CONF_DIR |
| 46 | |
| 47 | ant clean |
| 48 | }}} |
| 49 | |
| 50 | == 實作習題 == |
| 51 | |
| 52 | <問題 1> 在全分散模式下, |
| 53 | (1) In full distributed mode, what do you see after running "hadoop fs -ls"? |
| 54 | (2) Change to local mode, what do you see after running "hadoop fs -ls"? |