Ask HN: To everybody who uses MapReduce: what problems do you solve?

Re:Ask HN: To everybody who uses MapReduce: what problems do... by AsymetricCom on Sunday November 10, 2013 @01:53PM (#6707862)

> Moving Big Data around is hard.

I never had any issues with Hadoop. Took about 2 days for me to familiarize myself with it and adhoc a script to do the staging and setup the local functions processing the data.

I really would like to understand what you consider "hard" about Hadoop or managing a cluster. It's pretty straight forward idea, architecture is dead simple, requiring no specialized hardware at any level. Anyone who is familiar with linux CLI and running a dyanamic website should be able to grok it easily, imho.

Then again, I come from the /. crowd, so YC isn't really my kind of people, generally.

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Re:Ask HN: To everybody who uses MapReduce: what problems do... by skrebbel on Sunday November 10, 2013 @01:58PM (#6707879)

> Then again, I come from the /. crowd, so YC isn't really my kind of people, generally.

You sound like a snob.

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Re:Ask HN: To everybody who uses MapReduce: what problems do... by AsymetricCom on Sunday November 10, 2013 @02:11PM (#6707947)

See what I mean?

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Re:Ask HN: To everybody who uses MapReduce: what problems do... by alecco on Sunday November 10, 2013 @02:22PM (#6707997)

Is this serious? Have you ported a program to Hadoop? Unles you use Pig or one of those helping layers it is quite hard for non-trivial problems. And those helping layers usually come with some overhead cost for non-trivial cases, too.

Edit: no downvote from me.

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Re:Ask HN: To everybody who uses MapReduce: what problems do... by AsymetricCom on Sunday November 10, 2013 @02:25PM (#6708015)

It was a pretty easy problem, parsing logs for performance statistics. But moving the data is the easy part and that's why I was incredulous of the OP's statement.

I'm starting to wonder if this is really "Hacker News" or if it's "we want free advice and comments from engineers on our startups so lets start a forum with technical articles"

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Re:Ask HN: To everybody who uses MapReduce: what problems do... by alecco on Sunday November 10, 2013 @02:42PM (#6708076)

Big Data should be on the Peta+ level. Even with 10G Ethernet it takes a lot of bandwidth and time to move things around (and it's very hard to keep 10G ethernet full at a constant rate from storage). This is hard even for telcos. Note Terabyte+ level today fits on SSD.

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Re:Ask HN: To everybody who uses MapReduce: what problems do... by oceanplexian on Sunday November 10, 2013 @03:43PM (#6708348)

Not really, "Big Data" has nothing to do with how many bytes you're pushing around.

Some types of data analytics are CPU heavy and require distributed resources. Your comment about 10G isn't true. You can move around a Tb every 10 minutes or so. SSDs or a medium sized SAN could easily keep up with the bandwidth.

If your data isn't latency sensitive and run in batches, building a Hadoop cluster is a great solution to a lot of problems.

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Re:Ask HN: To everybody who uses MapReduce: what problems do... by schrodinger on Sunday November 10, 2013 @05:22PM (#6708724)

Of course big data is about number of bytes. That's what something like map reduce helps with. It depends on breaking down your input into smaller chunks, and the number of chunks is certainly related to the number of bytes.

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Re:Ask HN: To everybody who uses MapReduce: what problems do... by nl on Sunday November 10, 2013 @05:48PM (#6708823)

Then again, I come from the /. crowd, so YC isn't really my kind of people, generally.

W T F does this even mean? I genuinely do not understand what point you are trying to make?

I have used Slashdot longer than you have (ok, possibly not.. but username registered in 1998 here...).

I find HN has generally much more experienced people on it, who understand more about the tradeoffs different solutions provide.

The old Slashdot hidden forums like wahiscool etc were good like this too, but I don't think they exist anymore do they?

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