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Posted to common-dev@hadoop.apache.org by "Tsz Wo (Nicholas), SZE (JIRA)" <ji...@apache.org> on 2009/01/15 20:34:59 UTC
[jira] Updated: (HADOOP-5052) Add an example for computing exact
digits of Pi
[ https://issues.apache.org/jira/browse/HADOOP-5052?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Tsz Wo (Nicholas), SZE updated HADOOP-5052:
-------------------------------------------
Attachment: 5052_20090115_0.18.patch
5052_20090115_0.18.patch: for 0.18
Here is a sample output:
{noformat}
bash-3.2$ ./bin/hadoop jar build/hadoop-0.18.3-dev-examples.jar bbp 4 1000
Number of Maps = 4
Digits per Map = 1000
Starting Job ...
09/01/15 11:22:22 INFO mapred.FileInputFormat: Total input paths to process : 4
09/01/15 11:22:22 INFO mapred.FileInputFormat: Total input paths to process : 4
09/01/15 11:22:22 INFO mapred.JobClient: Running job: job_200901150913_0015
09/01/15 11:22:23 INFO mapred.JobClient: map 0% reduce 0%
09/01/15 11:22:25 INFO mapred.JobClient: map 25% reduce 0%
09/01/15 11:22:28 INFO mapred.JobClient: map 50% reduce 0%
09/01/15 11:22:32 INFO mapred.JobClient: map 75% reduce 0%
09/01/15 11:22:36 INFO mapred.JobClient: map 100% reduce 0%
09/01/15 11:22:41 INFO mapred.JobClient: Job complete: job_200901150913_0015
09/01/15 11:22:41 INFO mapred.JobClient: Counters: 16
09/01/15 11:22:41 INFO mapred.JobClient: File Systems
09/01/15 11:22:41 INFO mapred.JobClient: HDFS bytes read=452
09/01/15 11:22:41 INFO mapred.JobClient: HDFS bytes written=2143
09/01/15 11:22:41 INFO mapred.JobClient: Local bytes read=2094
09/01/15 11:22:41 INFO mapred.JobClient: Local bytes written=4374
09/01/15 11:22:41 INFO mapred.JobClient: Job Counters
09/01/15 11:22:41 INFO mapred.JobClient: Launched reduce tasks=1
09/01/15 11:22:41 INFO mapred.JobClient: Launched map tasks=4
09/01/15 11:22:41 INFO mapred.JobClient: Data-local map tasks=4
09/01/15 11:22:41 INFO mapred.JobClient: Map-Reduce Framework
09/01/15 11:22:41 INFO mapred.JobClient: Reduce input groups=4
09/01/15 11:22:41 INFO mapred.JobClient: Combine output records=0
09/01/15 11:22:41 INFO mapred.JobClient: Map input records=4
09/01/15 11:22:41 INFO mapred.JobClient: Reduce output records=4
09/01/15 11:22:41 INFO mapred.JobClient: Map output bytes=2048
09/01/15 11:22:41 INFO mapred.JobClient: Map input bytes=80
09/01/15 11:22:41 INFO mapred.JobClient: Combine input records=0
09/01/15 11:22:41 INFO mapred.JobClient: Map output records=4
09/01/15 11:22:41 INFO mapred.JobClient: Reduce input records=4
Job Finished in 19.859 seconds.
Pi = 0x3.24 3f 6a 88 85 a3 08 d3 13 19 8a 2e 03 70 73 44 a4 09 38 22 29 9f 31
d0 08 2e fa 98 ec 4e 6c 89 45 28 21 e6 38 d0 13 77 be 54 66 cf 34 e9
0c 6c c0 ac 29 b7 c9 7c 50 dd 3f 84 d5 b5 b5 47 09 17 92 16 d5 d9 89
79 fb 1b d1 31 0b a6 98 df b5 ac 2f fd 72 db d0 1a df b7 b8 e1 af ed
6a 26 7e 96 ba 7c 90 45 f1 2c 7f 99 24 a1 99 47 b3 91 6c f7 08 01 f2
e2 85 8e fc 16 63 69 20 d8 71 57 4e 69 a4 58 fe a3 f4 93 3d 7e 0d 95
74 8f 72 8e b6 58 71 8b cd 58 82 15 4a ee 7b 54 a4 1d c2 5a 59 b5 9c
30 d5 39 2a f2 60 13 c5 d1 b0 23 28 60 85 f0 ca 41 79 18 b8 db 38 ef
8e 79 dc b0 60 3a 18 0e 6c 9e 0e 8b b0 1e 8a 3e d7 15 77 c1 bd 31 4b
27 78 af 2f da 55 60 5c 60 e6 55 25 f3 aa 55 ab 94 57 48 98 62 63 e8
14 40 55 ca 39 6a 2a ab 10 b6 b4 cc 5c 34 11 41 e8 ce a1 54 86 af 7c
72 e9 93 b3 ee 14 11 63 6f bc 2a 2b a9 c5 5d 74 18 31 f6 ce 5c 3e 16
9b 87 93 1e af d6 ba 33 6c 24 cf 5c 7a 32 53 81 28 95 86 77 3b 8f 48
98 6b 4b b9 af c4 bf e8 1b 66 28 21 93 61 d8 09 cc fb 21 a9 91 48 7c
ac 60 5d ec 80 32 ef 84 5d 5d e9 85 75 b1 dc 26 23 02 eb 65 1b 88 23
89 3e 81 d3 96 ac c5 0f 6d 6f f3 83 f4 42 39 2e 0b 44 82 a4 84 20 04
69 c8 f0 4a 9e 1f 9b 5e 21 c6 68 42 f6 e9 6c 9a 67 0c 9c 61 ab d3 88
f0 6a 51 a0 d2 d8 54 2f 68 96 0f a7 28 ab 51 33 a3 6e ef 0b 6c 13 7a
3b e4 ba 3b f0 50 7e fb 2a 98 a1 f1 65 1d 39 af 01 76 66 ca 59 3e 82
43 0e 88 8c ee 86 19 45 6f 9f b4 7d 84 a5 c3 3b 8b 5e be e0 6f 75 d8
85 c1 20 73 40 1a 44 9f 56 c1 6a a6 4e d3 aa 62 36 3f 77 06 1b fe df
72 42 9b 02 3d 37 d0 d7 24 d0 0a 12 48 db 0f ea d3 49 f1 c0 9b 07 53
72 c9 80 99 1b 7b 25 d4 79 d8 f6 e8 de f7 e3 fe 50 1a b6 79 4c 3b 97
6c e0 bd 04 c0 06 ba c1 a9 4f b6 40 9f 60 c4 5e 5c 9e c2 19 6a 24 63
68 fb 6f af 3e 6c 53 b5 13 39 b2 eb 3b 52 ec 6f 6d fc 51 1f 9b 30 95
2c cc 81 45 44 af 5e bd 09 be e3 d0 04 de 33 4a fd 66 0f 28 07 19 2e
4b b3 c0 cb a8 57 45 c8 74 0f d2 0b 5f 39 b9 d3 fb db 55 79 c0 bd 1a
60 32 0a d6 a1 00 c6 40 2c 72 79 67 9f 25 fe fb 1f a3 cc 8e a5 e9 f8
db 32 22 f8 3c 75 16 df fd 61 6b 15 2f 50 1e c8 ad 05 52 ab 32 3d b5
fa fd 23 87 60 53 31 7b 48 3e 00 df 82 9e 5c 57 bb ca 6f 8c a0 1a 87
56 2e df 17 69 db d5 42 a8 f6 28 7e ff c3 ac 67 32 c6 8c 4f 55 73 69
5b 27 b0 bb ca 58 c8 e1 ff a3 5d b8 f0 11 a0 10 fa 3d 98 fd 21 83 b8
4a fc b5 6c 2d d1 d3 5b 9a 53 e4 79 b6 f8 45 65 d2 8e 49 bc 4b fb 97
90 e1 dd f2 da a4 cb 7e 33 62 fb 13 41 ce e4 c6 e8 ef 20 ca da 36 77
4c 01 d0 7e 9e fe 2b f1 1f b4 95 db da 4d ae 90 91 98 ea ad 8e 71 6b
93 d5 a0 d0 8e d1 d0 af c7 25 e0 8e 3c 5b 2f 8e 75 94 b7 8f f6 e2 fb
f2 12 2b 64 88 88 b8 12 90 0d f0 1c 4f ad 5e a0 68 8f c3 1c d1 cf f1
91 b3 a8 c1 ad 2f 2f 22 18 be 0e 17 77 ea 75 2d fe 8b 02 1f a1 e5 a0
cc 0f b5 6f 74 e8 18 ac f3 d6 ce 89 e2 99 b4 a8 4f e0 fd 13 e0 b7 7c
c4 3b 81 d2 ad a8 d9 16 5f a2 66 80 95 77 05 93 cc 73 14 21 1a 14 77
e6 ad 20 65 77 b5 fa 86 c7 54 42 f5 fb 9d 35 cf eb cd af 0c 7b 3e 89
a0 d6 41 1b d3 ae 1e 7e 49 00 25 0e 2d 20 71 b3 5e 22 68 00 bb 57 b8
e0 af 24 64 36 9b f0 09 b9 1e 55 63 91 1d 59 df a6 aa 78 c1 43 89 d9
5a 53 7f 20 7d 5b a2 02 e5 b9 c5 83 26 03 76 62 95 cf a9 11 c8 19 68
4e 73 4a 41 b3 47 2d ca 7b 14 a9 4a 1b 51 00 52 9a 53 29 15 d6 0f 57
3f bc 9b c6 e4 2b 60 a4 76 81 e6 74 00 08 ba 6f b5 57 1b e9 1f f2 96
ec 6b 2a 0d d9 15 b6 63 65 21 e7 b9 f9 b6 ff 34 05 2e c5 85 56 64 53
b0 2d 5d a9 9f 8f a1 08 ba 47 99 6e 85 07 6a 4b 7a 70 e9 b5 b3 29 44
db 75 09 2e c4 19 26 23 ad 6e a6 b0 49 a7 df 7d 9c ee 60 b8 8f ed b2
66 ec aa 8c 71 69 9a 17 ff 56 64 52 6c c2 b1 9e e1 19 36 02 a5 75 09
4c 29 a0 59 13 40 e4 18 3a 3e 3f 54 98 9a 5b 42 9d 65 6b 8f e4 d6 99
f7 3f d6 a1 d2 9c 07 ef e8 30 f5 4d 2d 38 e6 f0 25 5d c1 4c dd 20 86
84 70 eb 26 63 82 e9 c6 02 1e cc 5e 09 68 6b 3f 3e ba ef c9 3c 97 18
14 6b 6a 70 a1 68 7f 35 84 52 a0 e2 86 b7 9c 53 05 aa 50 07 37 3e 07
84 1c 7f de ae 5c 8e 7d 44 ec 57 16 f2 b8 b0 3a da 37 f0 50 0c 0d f0
1c 1f 04 02 00 b3 ff ae 0c f5 1a 3c b5 74 b2 25 83 7a 58 dc 09 21 bd
d1 91 13 f9 7c a9 2f f6 94 32 47 73 22 f5 47 01 3a e5 e5 81 37 c2 da
dc c8 b5 76 34 9a f3 dd a7 a9 44 61 46 0f d0 03 0e ec c8 c7 3e a4 75
1e 41 e2 38 cd 99 3b ea 0e 2f 32 80 bb a1 18 3e b3 31 4e 54 8b 38 4f
6d b9 08 6f 42 0d 03 f6 0a 04 bf 2c b8 12 90 24 97 7c 79 56 79 b0 72
bc af 89 af de 9a 77 1f d9 93 08 10 b3 8b ae 12 dc cf 3f 2e 55 12 72
1f 2e 6b 71 24 50 1a dd e6 9f 84 cd 87 7a 58 47 18 74 08 da 17 bc 9f
9a bc e9 4b 7d 8c ec 7a ec 3a db 85 1d fa 63 09 43 66 c4 64 c3 d2 ef
1c 18 47 32 15 d9 08 dd 43 3b 37 24 c2 ba 16 12 a1 4d 43 2a 65 c4 51
50 94 00 02 13 3a e4 dd 71 df f8 9e 10 31 4e 55 81 ac 77 d6 5f 11 19
9b 04 35 56 f1 d7 a3 c7 6b 3c 11 18 3b 59 24 a5 09 f2 8f e6 ed 97 f1
fb fa 9e ba bf 2c 1e 15 3c 6e 86 e3 45 70 ea e9 6f b1 86 0e 5e 0a 5a
3e 2a b3 77 1f e7 1c 4e 3d 06 fa 29 65 dc b9 99 e7 1d 0f 80 3e 89 d6
52 66 c8 25 2e 4c c9 78 9c 10 b3 6a c6 15 0e ba 94 e2 ea 78 a5 fc 3c
53 1e 0a 2d f4 f2 f7 4e a7 36 1d 2b 3d 19 39 26 0f 19 c2 79 60 52 23
a7 08 f7 13 12 b6 eb ad fe 6e ea c3 1f 66 e3 bc 45 95 a6 7b c8 83 b1
7f 37 d1 01 8c ff 28 c3 32 dd ef be 6c 5a a5 65 58 21 85 68 ab 98 02
ee ce a5 0f db 2f 95 3b 2a ef 7d ad 5b 6e 2f 84 15 21 b6 28 29 07 61
70 ec dd 47 75 61 9f 15 10 13 cc a8 30 eb 61 bd 96 03 34 fe 1e aa 03
63 cf b5 73 5c 90 4c 70 a2 39 d5 9e 9e 0b cb aa de 14 ee cc 86 bc 60
62 2c a7 9c ab 5c ab b2 f3 84 6e 64 8b 1e af 19 bd f0 ca a0 23 69 b9
65 5a bb 50 40 68 5a 32 3c 2a b4 b3 31 9e e9 d5 c0 21 b8 f7 9b 54 0b
19 87 5f a0 99 95 f7 99 7e 62 3d 7d a8 f8 37 88 9a 97 e3 2d 77 11 ed
93 5f 16 68 12 81 0e 35 88 29 c7 e6 1f d6 96 de df a1 78 58 ba 99 57
f5 84 a5 1b 22 72 63 9b 83 c3 ff 1a c2 46 96 cd b3 0a eb 53 2e 30 54
8f d9 48 e4 6d bc 31 28 58 eb f2 ef 34 c6 ff ea fe 28 ed 61 ee 7c 3c
73 5d 4a 14 d9 e8 64 b7 e3 42 10 5d 14 20 3e 13 e0 45 ee e2 b6 a3 aa
ab ea db 6c 4f 15 fa cb 4f d0 c7 42 f4 42 ef 6a bb b5 65 4f 3b 1d 41
cd 21 05 d8 1e 79 9e 86 85 4d c7 e4 4b 47 6a 3d 81 62 50 cf 62 a1 f2
5b 8d 26 46 fc 88 83 a0 c1 c7 b6 a3 7f 15 24 c3 69 cb 74 92 47 84 8a
0b 56 92 b2 85 09 5b bf 00 ad 19 48 9d 14 62 b1 74 23 82 0e 00 58 42
8d 2a 0c 55 f5 ea 1d ad f4 3e 23 3f 70 61 33 72 f0 92 8d 93 7e 41
Total number of hex digits is 4000.
{noformat}
> Add an example for computing exact digits of Pi
> -----------------------------------------------
>
> Key: HADOOP-5052
> URL: https://issues.apache.org/jira/browse/HADOOP-5052
> Project: Hadoop Core
> Issue Type: New Feature
> Components: examples
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: Tsz Wo (Nicholas), SZE
> Attachments: 5052_20090115_0.18.patch
>
>
> It would be useful to add an example showing how to use Hadoop to do scientific computing. We should add an example for computing exact digits of Pi.
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