where to get the document about Ignite architecture or technical advantage?

[胡永亮/Bob <hu...@neusoft.com>]

Hi, everyone

    I only find some document aboute Ignite function, but I want to know how to implement those functions.
    Where can I get the architecture document?

    So, I have some deeper problem to be explained. 

    For example, 
    1, The sql query of Ignite is implemented with MapReduce or fully MPP distributed technology?
    2, The object with many columns in Ignite cache is saved with column way or row way?
    3, What advantage does the stream compute of Ignite have comparing to storm?
    4, Does the one Ignite cluster support deploying in many data centers, such as one node in one province, and one node in another province?

    Thanks your reply.



Bob


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Re: where to get the document about Ignite architecture or technical advantage?

[vkulichenko <va...@gmail.com>]

Hi,

Here are my comments.

1. It's MapReduce, however you can start several nodes per physical box to
better scale the execution across available CPUs.
2. Data in Ignite is stored in key-value pairs which is completely different
approach. But if to choose between the two, it's much closer to row based
storage.
3. This thread has a good discussion about this:
http://stackoverflow.com/questions/33936603/apache-ignite-vs-apache-storm-in-depth
4. Yes, you can span the cluster across several data centers, but this will
most likely introduce increased latencies and performance drop. However,
there are third party offers for async replication, like the one provided by
GridGain in their paid solution:
https://gridgain.readme.io/docs/data-center-replication

-Val



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