Alex Rivera | Logout

Questions tagged mapreduce

52 questions · page 1 of 2

Sort by: Newest Votes Active
12
votes
1
answers

Incremental MapReduce implementations (other than CouchDB, preferably)

hadoop mapreduce aggregation
asked 2013-06-18T21:45:46.993
14
votes
3
answers

On what basis mapreduce framework decides whether to launch a combiner or not

hadoop mapreduce combiners
asked 2013-06-18T05:00:50.600
16
votes
1
answers

Type mismatch in value from map: expected org.apache.hadoop.io.NullWritable, recieved org.apache.hadoop.io.Text

java hadoop mapreduce
asked 2013-06-04T20:22:49.943
15
votes
2
answers

Using Hadoop for Parallel Processing rather than Big Data

hadoop mapreduce
asked 2013-04-01T12:58:06.507
8
votes
3
answers

how to prevent hadoop job to fail on corrupted input file

hadoop mapreduce cascading
asked 2013-02-17T10:41:33.463
11
votes
4
answers

MapReduce job Output sort order

hadoop mapreduce
asked 2013-01-14T16:24:04.193
125
votes
6
answers

How does Hadoop process records split across block boundaries?

hadoop split mapreduce hdfs
asked 2013-01-12T07:10:57.050
10
votes
1
answers

file path in hdfs

java hadoop amazon-ec2 mapreduce amazon-emr
asked 2012-11-27T05:12:52.577
8
votes
2
answers

MapReduce results seem limited to 100?

python mongodb mapreduce pymongo
asked 2012-11-10T02:56:38.420
8
votes
4
answers

Hadoop use KeyValueTextInputFormat

java hadoop mapreduce word-count
asked 2012-09-22T02:12:42.733
27
votes
2
answers

Hadoop : java.lang.ClassCastException: org.apache.hadoop.io.LongWritable cannot be cast to org.apache.hadoop.io.Text

java hadoop mapreduce
asked 2012-08-02T19:48:04.487
8
votes
2
answers

Difference between PIG local and mapreduce mode

hadoop mapreduce hdfs apache-pig
asked 2012-07-26T12:33:38.997
31
votes
6
answers

No such method exception Hadoop <init>

java hadoop mapreduce
asked 2012-07-12T07:08:14.100
8
votes
2
answers

Versioning couchdb map-reduce functions

git version-control couchdb mapreduce
asked 2012-06-29T16:18:47.267
8
votes
2
answers

Why is MapReduce in CouchDB called "incremental"?

data-structures couchdb mapreduce terminology
asked 2012-06-28T00:42:37.877
8
votes
5
answers

Difference failed tasks vs killed tasks

hadoop mapreduce
asked 2012-06-22T23:40:52.277
9
votes
5
answers

When using HBase as a source for MapReduce, can I extend TableInputFormatBase to create multiple splits and multiple mappers for each region?

java performance hadoop mapreduce hbase
asked 2012-06-14T18:54:35.403
9
votes
3
answers

Hadoop: How does OutputCollector work during MapReduce?

java hadoop mapreduce
asked 2012-06-12T12:46:52.513
19
votes
1
answers

Distributed local clustering coefficient algorithm (MapReduce/Hadoop)

performance algorithm graph hadoop mapreduce
asked 2012-06-10T10:51:57.813
9
votes
2
answers

Working of RecordReader in Hadoop

hadoop mapreduce
asked 2012-06-08T05:24:27.123
43
votes
4
answers

How to write 'map only' hadoop jobs?

hadoop mapreduce
asked 2012-02-22T12:06:27.227
12
votes
3
answers

Mapreduce for dummies

hadoop mapreduce
asked 2012-01-12T17:23:02.187
25
votes
4
answers

Hive unable to manually set number of reducers

hadoop mapreduce hive
asked 2012-01-06T17:43:16.140
13
votes
3
answers

Hadoop: how to access (many) photo images to be processed by map/reduce?

hadoop mapreduce hdfs
asked 2012-01-06T02:43:06.090
10
votes
4
answers

Hadoop combiner sort phase

hadoop mapreduce combiners
asked 2011-10-19T18:03:07.507
10
votes
2
answers

MapReduceBase and Mapper deprecated

java hadoop mapreduce
asked 2011-10-02T11:31:34.553
9
votes
4
answers

F# async stack overflow

asynchronous f# mapreduce
asked 2011-08-06T21:58:53.537
41
votes
15
answers

Setting the number of map tasks and reduce tasks

hadoop mapreduce
asked 2011-07-30T19:16:07.697
11
votes
3
answers

Re-use Amazon Elastic MapReduce instance

amazon-ec2 mapreduce elastic-map-reduce
asked 2011-07-30T00:27:20.930
12
votes
2
answers

Are there MapReduce implementations on GPUs (CUDA)?

cuda mapreduce gpu
asked 2011-06-14T07:01:19.153
10
votes
1
answers

Custom Map Reduce Program on Hive, what's the Rule? How about input and output?

hadoop mapreduce hive
asked 2011-05-30T16:24:06.263
12
votes
2
answers

MapReduce/Aggregate operations in SpringBatch

java mapreduce batch-processing spring-batch
asked 2011-05-25T06:55:37.517
24
votes
5
answers

How to fix "Task attempt_201104251139_0295_r_000006_0 failed to report status for 600 seconds."

hadoop mapreduce
asked 2011-05-03T02:55:05.707
9
votes
4
answers

Removing duplicate records using MapReduce

mongodb mapreduce
asked 2011-04-03T15:40:46.967
15
votes
4
answers

Getting Started with Avro

mapreduce avro
asked 2011-03-29T23:48:25.993
10
votes
3
answers

Return unique values by key in CouchDB

couchdb mapreduce
asked 2011-03-28T08:58:21.697
18
votes
1
answers

compute bootstrapping algorithm using Map/Reduce

algorithm mapreduce
asked 2011-03-22T14:19:57.467
20
votes
3
answers

Querying embedded objects in Mongoid/rails 3 ("Lower than", Min operators and sorting)

ruby-on-rails mongodb mapreduce mongoid
asked 2011-03-10T11:35:38.977
17
votes
3
answers

Can someone explain map-reduce in C#?

c# mongodb mapreduce
asked 2011-01-20T11:45:33.647
9
votes
2
answers

Does CouchDB really split views across servers?

couchdb mapreduce
asked 2010-10-07T17:30:35.633
35
votes
6
answers

Sorting large data using MapReduce/Hadoop

java hadoop mapreduce
asked 2010-09-02T06:46:21.617
55
votes
5
answers

Where does hadoop mapreduce framework send my System.out.print() statements ? (stdout)

hadoop mapreduce
asked 2010-07-08T19:34:00.190
35
votes
1
answers

Best way to do one-to-many "JOIN" in CouchDB

couchdb mapreduce
asked 2010-06-13T18:43:04.173
27
votes
4
answers

Using map/reduce for mapping the properties in a collection

mongodb mapreduce
asked 2010-06-08T11:55:09.093
20
votes
1
answers

Using MongoDB's map/reduce to "group by" two fields

mongodb mapreduce
asked 2010-05-12T06:52:42.020
14
votes
3
answers

Using Hadoop, are my reducers guaranteed to get all the records with the same key?

hadoop mapreduce hive uniq
asked 2010-04-13T21:16:17.853
9
votes
3
answers

How to pick random (small) data samples using Map/Reduce?

hadoop mapreduce hbase random
asked 2010-03-25T08:48:16.190
22
votes
5
answers

Run Hadoop job without using JobConf

java hadoop mapreduce
asked 2010-01-22T05:38:39.320
13
votes
4
answers

Is it possible to write map/reduce jobs for Amazon Elastic MapReduce using .NET?

.net amazon-ec2 mapreduce
asked 2009-07-27T20:50:16.970
32
votes
8
answers

What type of problems can mapreduce solve?

parallel-processing mapreduce
asked 2009-04-01T12:40:52.627
page 1 of 2 Next →