The hadoop tag has no wiki summary.
-2
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0answers
17 views
Can anyone explain the logic for image indexing & retrieval & Retrieval in map-reduce using LIRe APIs?
Can anyone explain the logic for image indexing & retrieval & Retrieval in map-reduce using LIRe APIs? I am working on hadoop based project which involves image indexing & retrieval ...
2
votes
0answers
113 views
Is Hadoop (or generally, distributed MapReduce) applicable to a wide variety of problems? [closed]
I think I have a good basic understanding of MapReduce (and Hadoop). while I don't have any direct experience using it, I have read the papers and I believe I get it.
I have some reservations, ...
0
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3answers
395 views
What is the value of the Cloudera Hadoop Certification for people new to the IT industry?
I am a software developer with 8 months of experience in the IT industry, currently working on the development of tools for BIG DATA analytics. I have learned Hadoop basics on my own and I am pretty ...
0
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1answer
82 views
Why do HDFS clusters have only a single NameNode?
I'm trying to understand better how Hadoop works, and I'm reading
The NameNode is a Single Point of Failure for the HDFS Cluster. HDFS is not currently a High Availability system. When the ...
4
votes
2answers
210 views
Asynchronous Java
I'm wondering if I wanted to implement a web service based on java that does web analytics, what sort of architecture should I use. The actualy processing of the Big Data would be done by Hadoop.
...
0
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0answers
41 views
Running MR for loading data into hbase [closed]
How can I run an MR job for for loading data into Hbase from HDFS? I tried running jar then it says
Exception in thread "main" java.lang.NoClassDefFoundError: ...
0
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1answer
171 views
Suggestions for final year project (something in cloud) [closed]
I'm interested in cloud and distributed computing. I recently heard about Apache Hadoop. Also checked HBase, Hive, Cloudera and other extensions. Can i take any of these topic, extend it further for ...
1
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3answers
836 views
Is cloudera hadoop certification worth the investment
I am considering investing time to learn Hadoop and it's related technologies. The problem is that my current day job will not be using Hadoop any time soon and even if I learn from books, blogs ...
1
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1answer
117 views
Scalable distributed file system for blobs like images and other documents
Cassandra & HBase both do not efficiently support storage of blobs like images. Storing directly on HDFS stresses the Namenode because of huge number of files. Facebook uses Haystack for images ...
4
votes
2answers
180 views
Can Hadoop be made production-stable on a Windows platform?
Is anybody using Hadoop on Windows (Win32 or Win64) in production for serious work?
If you've tried it and rejected this combination can you give your (top) reasons?
If you managed to make it ...
5
votes
3answers
371 views
how to convince other we should move to hadoop?
Everything I've read about Hadoop seems like exactly the technology we need to make our enterprise more scalable. We have terabytes of raw data that is in non-relational form (text files of some ...
6
votes
2answers
497 views
Can map-reduce say “Hello World”?
Gathering that map-reduce is being used to process huge amounts of data, I set out to understand it.
My queries were:
What class of problems does it aim to solve?
How does it help breaking down of ...
1
vote
1answer
82 views
How do you control nodes in a server farm?
I've been reading about hadoop and multi-node setups, and it says in the documentation that you must have a JVM and hadoop software already running on those nodes.
My question is, do people install ...
6
votes
1answer
337 views
What is Hadoop and what are some example applications of it?
The title basically says it all. I keep hearing about Hadoop, and from the wikipedia entry, it certainly sounds interesting, but I'm curious if there are some good examples where it makes sense to ...
