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AIM

This code is already available in the Ignite samples folder but wanted to put it
in a ready to run way and also structured precisely around
the content of the two Webinar code walkthroughs below by the co-founder of Gridgain Dmitriy Setrakyan


https://www.youtube.com/watch?v=4CQalha3MyY
https://www.youtube.com/watch?v=wpCeIz0oEPY
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SUGGESTED APPROACH

-watch the videos above in the back ground and follow instructions on each session
    which closely follow the videos

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PREREQUISITES

Java 8 is installed, required for Ignite
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INTELLIJ SETUP

https://github.com/mattua/IgniteExample101.git

-Self-contained Git project only contains maven skeleton -> src, resources, pom
-Ignite is just a set of libraries pulled in from maven via the pom

1. Intellij > new project from version control > import from github
2. Project will be picked up as maven project and libraries and project settings file created
    -no need to add these to git when prompted

A few different settings are required for 1.8 Java

-  Project settings > Project > Project SDK > 1.8
-  Project settings > modules > sources > language level 8
-  Platform settings > SDKS > 1.8

Get this Error -> javacTask: source release 8 requires target release 1.8
- IDEA > Preferences > Build/Execution/Deployment > Compiler > Java compiler > locate the module in the list and set the target to 1.8

Also - might be necessary to remove the secondary "Main" module - the only module should be IgniteExample101

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ECLIPSE

https://github.com/mattua/IgniteExample101

1)	Download zip from the webpage https://github.com/mattua/IgniteExample101, extract in workspace.
2)	Import as maven project.
3)	In case project is not using java 8 and showing compilation error : Right click on project >> properties >> java compiler >> set compiler compliance level to 1.8

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GETTING STARTED

Try starting some Ignite Nodes by running "IgniteNodeStartUp"

This will create basic server nodes (Ignite instances)
    -notice how they all register with each other in the console as they start up


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SESSION 1: all instructions inline in the source code

Once you have started a few nodes, run the session1.IgniteWebinarExamples1 class, changing the
selected scenario per the switch statement.

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SESSION 2: follow the steps below

This is mostly about streaming and requires the following to be run sequentially

1) Start a few instances of IgniteNoodeStartup as per sesssion one - you can have as many nodes running on your
    cluster as you want.


2) Run "session2.StreamWords" class - this will populate an Ignite cache by reading in the lines of the "Alice In Wonderland"
    story and streaming the words one by one into the shared Ignite cache - a cache which is configured with a time to
    life of 1 second, so it will be a sliding window of every word streamed in the last 1 second

3) Run "session2.QueryWords" class to query the contents of this cache in real time in SQL like syntax- and do some analytics

    a) MAKE SURE session2.StreamWords is running in the background (2) streaming words into the cache in
    real time with a 1 second time to expiry

    b) After a while, shutdown the session2.StreamWords instance - you should see that the streaming
    stops and almost immediately, the QueryResults window shows no contents - almost immediately all
    the contents of the cache have expired and there are no new entries coming in

    You should see "Query result set is empty."

    We need a way to have a backup in case the actual streamer goes down - that's where the next
    exmaple comes into play

4) Deploy service as Cluster Singleton

     We have basically wrapped up the previous Streamer functionality into a service/impl and deployed that service
     object into the Ignite cluster as a singleton.

    a) make sure you have some background server nodes running (at least 2)
    b) Run "session2.StreamerSingletonServiceExample"
           this deploy (and auto executes) the service impl object to one of the cluster nodes

           Remember, it's a cluster singleton so there is only once instance running per cluster

    c) observe that in one of the server nodes you will see the streamed output
    d) Shutdown the node which is currently streaming
    e) Observe that the service will resume on the other node
    f) Notice that the service will never run on the StreamerSingletonServiceExample node
        since it is defined as a "client node"  >  Ignition.setClientMode(true);

    g) Run the same QueryWords class from before to see that the same cache is now being
        populated by the Cluster singleton services and view SQL generated stats on the
        current contents of the cache