| | 1 | [[PageOutline]] |
| | 2 | |
| | 3 | ◢ <[wiki:III130126/Lab8 實作八]> | <[wiki:III130126 回課程大綱]> ▲ | <[wiki:III130126/Lab10 實作十]> ◣ |
| | 4 | |
| | 5 | = 實作九 Lab 9 = |
| | 6 | |
| | 7 | {{{ |
| | 8 | #!html |
| | 9 | <div style="text-align: center;"><big style="font-weight: bold;"><big>Hadoop Streaming 搭配不同程式語言練習<br/>Hadoop Streaming in different Language</big></big></div> |
| | 10 | }}} |
| | 11 | |
| | 12 | {{{ |
| | 13 | #!text |
| | 14 | 以下練習，請連線至 hadoop.nchc.org.tw 操作。底下的 hXXXX 等於您的用戶名稱。 |
| | 15 | }}} |
| | 16 | |
| | 17 | == 搭配現存二進位執行檔 == |
| | 18 | == Existing Binary == |
| | 19 | |
| | 20 | {{{ |
| | 21 | ~$ hadoop fs -put /etc/hadoop/conf lab9_input |
| | 22 | ~$ hadoop jar hadoop-streaming.jar -input lab9_input -output lab9_out1 -mapper /bin/cat -reducer /usr/bin/wc |
| | 23 | ~$ hadoop fs -cat lab9_out1/part-00000 |
| | 24 | }}} |
| | 25 | |
| | 26 | == 搭配 Bash Shell Script == |
| | 27 | |
| | 28 | {{{ |
| | 29 | ~$ echo "sed -e \"s/ /\n/g\" | grep ." > streamingMapper.sh |
| | 30 | ~$ echo "uniq -c | awk '{print \$2 \"\t\" \$1}'" > streamingReducer.sh |
| | 31 | ~$ chmod a+x streamingMapper.sh |
| | 32 | ~$ chmod a+x streamingReducer.sh |
| | 33 | ~$ hadoop jar hadoop-streaming.jar -input lab9_input -output lab9_out2 -mapper streamingMapper.sh -reducer streamingReducer.sh -file streamingMapper.sh -file streamingReducer.sh |
| | 34 | ~$ hadoop fs -cat lab9_out2/part-00000 |
| | 35 | }}} |
