| 1 | * 問題1: 如何讓run裡宣告的物件,map可使用,reduce也可以呼叫到 |
| 2 | |
| 3 | {{{ |
| 4 | public class ICAS extends Configured implements Tool { |
| 5 | |
| 6 | HBaseConfiguration hbase_conf; |
| 7 | HBaseAdmin hbase_admin; |
| 8 | |
| 9 | public ICAS() throws IOException { |
| 10 | hbase_conf = new HBaseConfiguration(); |
| 11 | hbase_admin = new HBaseAdmin(hbase_conf); |
| 12 | |
| 13 | } |
| 14 | |
| 15 | public static class ICAS_M extends MapReduceBase implements |
| 16 | Mapper<LongWritable, Text, Text, Text> { |
| 17 | //無法用hbase_admin, hbase_conf |
| 18 | } |
| 19 | |
| 20 | public static class ICAS_R extends TableReduce<Text, Text> { |
| 21 | //無法用hbase_admin, hbase_conf |
| 22 | } |
| 23 | |
| 24 | public static void main(String[] args) throws Exception { |
| 25 | //可以用hbase_admin, hbase_conf |
| 26 | } |
| 27 | }}} |
| 28 | |
| 29 | * 問題二、如何不覆蓋原本hbase內的資料,而是累加進去 |
| 30 | * 要先從原本的資料庫把資料撈出來,再整合後放進去 |
| 31 | |
| 32 | * 問題三、如何讓reduce 顯示進度 |
| 33 | |
| 34 | * 問題四、如何讓<key,value>後的value 在進行一次<key,value> |
| 35 | 現在: |
| 36 | || key= dest ip || value= infor: sip|| |
| 37 | || host M || host1; host2; host1|| |
| 38 | 期望值:(也就是多出來的host1要被濾掉) |
| 39 | || key= dest ip || value= infor: sip|| |
| 40 | || host M || host1; host2|| |
| 41 | |
| 42 | |
| 43 | |
| 44 | |
| 45 | |