MInutes of January User Group Meet & FeedBack & Demo Code

[Senthil Kumar]

Hi All 

Thanks for attending the january meet.

We had a roughly around 50+ attendees.

Minutes of the Meeting

 - Started off with a MapReduce session

    -  Explained how an rdbms query [select sum(amount) from table1 group by drug] can be converted into MR job.

    - Went through Key Value pair in each phase (Map,Reduce) and also about Writables.

    - How parallel processing in MR and much more.. Thanks to all who actively participated in interaction

- Dividied into five teams headed by senthil, siva, prasad, bini, ashwin respectively

  - Datasets - MobieLens and Million Songs 

  In discussion with the team members, team leads mentioned above implemented MR for a query of their choice.

  

- In between, we had refreshment.

Some of the feedback given are:

 - to discuss one real time usecase (or casestudy) in every meet.

 - Ask beginners (for Hadoop Ecosystem / Big Data) to come early(half an hour before the scheduled time) for a introduction session

 - Some web links for getting started to Hadoop. (we will soon launch our group webite having all links)

 

Please post us your feedback.

When shall we have our next meet -  9 feb or 16 feb?

What shall we discuss?? 

  A small thought

         - Shall we take up a single dataset and understand it completely before coming for the meet? or use hive for the queries??

         - Everyone can come with their one simple query and try to implement it on their own assisted by others.

         - How about million songs dataset??

PFA: MapReduce code and patient dataset used for the session.

        photo snaps of the meet(reduced size for attachment purpose)

Happy Hadooping!!!!!!

Thanks

Senthil

Chennai Hadoop User Group - A Community run by the community for the community

[Ashwanth Kumar]

I'm in for Feb 9th. Can we make it a habit of meeting every second / third Saturday like that of every month (unless it clashes with something else) so that it might be followed as a tradition by Chennai HUG members? 

WRT the topic, we can switch to Hive provided others are pretty comfortable in MR. 

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Ashwanth Kumar / ashwanthkumar.in

[Vagmi Mudumbai]

2nd Saturday please. 3rd saturday is chennai geeks. I would like to participate in the meets (eventually). :-)

Regards,
Vagmi Mudumbai
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[kumar vaibhav]

16th Feb

[balaji bk]

Hi,

 

If any one has 'Hadoop in Action' Ebook, Please do mail me.

 

Thanks,

Balaji

16th Feb

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[Srinivasan Ramalingam]

Hi senthil,

    how are you?.i had some work in last Saturday,so that i didn't join the meetup.surely,i will join the next meetup.

Thanks and Regrades

  R.Srinivasan 

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[Senthil Kumar]

@Ashwanth

Well. Thats good to go with Apache Hive for the next Meet.

For Beginners, Hive is a data warehouse system for Hadoop that facilitates easy data summarization, ad-hoc queries, and the analysis of large datasets stored in Hadoop compatible file systems. Hive provides a mechanism to project structure onto this data and query the data using a SQL-like language called HiveQL. At the same time this language also allows traditional map/reduce programmers to plug in their custom mappers and reducers when it is inconvenient or inefficient to express this logic in HiveQL.

@Srinivas

I was expecting your presence @ the meet.No probs. Will meet next time.

We will decide the date based on the members' choice.

Thanks

Senthil

[Prasad]

Also guys, 

If people are fine with hive, we can take up the same use case which we discussed in last meet for writing MR jobs. With the same dataset, we can try running hive queries to visualize the power of abstraction provided by hive.

[Mythily Rajavelu]

@Senthil,

 

3 of my team members attended this session. Here is the feedback from our folks,

 

"

The session was very informative and helpful. Since this was the first session working on Hadoop environment, they have divided us in to groups and requested us to work on simple sample data sets to implement on Map reduce platform which was very helpful in understanding the concepts from basics. Thank you so much for this opportunity

"

 

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[Sudha]

Hi ,
 I am a new member to this group.
 Looking forward to meet you all during Feb meet up and pretty exited about this meet up being a beginner to Hadoop .

Thanks,
Sudha

On Monday, January 7, 2013 11:09:07 PM UTC+5:30, Senthil Kumar wrote:

[kumar vaibhav]

9th Feb please. I am out for the rest of the month!

On Monday, January 7, 2013 11:09:07 PM UTC+5:30, Senthil Kumar wrote:

[Srinivasan Ramalingam]

Hi senthil,
when will our next meetup date.i really expected this meetup.can
you please share the meetup date.

Thanks and Regards
R.Srinivasan

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