Rajit kumar

ESB is not choice for your implementation and choose any java based REST API framework.

Mule ESB is best choice in your case and Mule ESB provides Cloud Connect technology, which can be used along with the SAP-certified connector to integration with Salesforce’s APIs. With Mule ESB, integration between SAP and Salesforce is not much easier.
Look for mule sites for if there are any limitations too.

I quite agree your point of view . I did not arrive at right conclusion still but best time to start project with above inputs and thanks for bringing all these in discussion.

Rajit

sorry for previous post..
That sounds good...I have done few implementations in past based on JMS specs using brokers like IBM MQ and weblogic message bus on EJB 2.1 and EJB 1.1 but tricky part in new specs says integrate different devices i.e.. iOS , Android and Web app.The app should be flexible enough to integrate with windows phones in future.The key thing maintainability of components. The app would need some integration architecture like ESB to integrate rest and JMS or DOES it really require ESB just for pub/sub and restful (webservices to android/iOS) or just JMS and restful will do. If i use JMS , how can i post messages to Android/iOS Push Notification server.

I appreciate your patience.

Rajit

That sound good...I have done few implementations in past based on JMS specs using brokers like IBM MQ and weblogic message bus on EJB 2.1 and EJB 1.1 but tricky part in new specs says integrate different devices i.e.. iOS , Android and Web app.The app should be flexible enough to integrate with windows phones in future.The key thing maintainability of components. The app would need some integration architecture like ESB to integrate rest and JMS or DOES it really require ESB just for pub/sub and restful (webservices to android/iOS) or just JMS and restful will do. If i use JMS , how can i post messages to Android/iOS Push Notification server.

I appreciate your patients.

Rajit

Make sure all data that you copied to hdfs proper or try cleanup data that was copied to hdfs before and upload it again. This could be data issue or might have reached max thresold.

The splitter job will take care by InputFormat and this can also be controlled by subclassing.

I am trained for hadoop certification. I think i can help you in training.

It works as one of the server service and need to have libs as stated above.If you use other distributions for hadoop installation the hive client are configured with that.

Do increase permgen size. Hopefully,that would solve problem.

Keep all layers togather instead of separation of layers and deploy it on clustered environment. The size of network vary on load factor too. Ensure load balancing mechanism in place and no single point of failure. You can define db server location based on read/write trips to database.

Thanks for clarifications.. i understand by reading your statements so JMS may not be suited for current environment as App would be totally new and need to develop app from scratch.

I mean Poll based messaging is pull based where client polls for queue messages at regular intervals so would pull based recommended over push based ?if i want to start new app.

what i understand from push-based model - A listener subscribes to an event that is triggered whenever a message arrives on a queue. The listener in turn can initiate message processing thus not having to poll the queue in order to determine whether or not any new work is available.


What I want to implement pull based messaging where listener(poll regular intervals) listens to queue whenever a message arrives on a queue from subscriber then message will be updated queue and database as well.

Is it recommend for messaging center if so, are there any implications like load factors if i choose pull based over push.

Please suggest..

I need help in design Message Center that resemble of LinkedIn on Spring Framework. I have situation like this where The Messages can be accessed on web ,Android and iOS platform. I have some initial thoughts of design above scenario by using Restful to access services to iOS and Android over push notifications. The core components of MC will be placed on Web Server so same should be used by web too.

Message Center should support broadcast and point-to-point message system. It should also help in real time messaging. The design should also scale for 30-50 users load.
My questions are as follow

1) Shall i use JMS Queue and Topics for above scenario?
2) Shall i implement Public - subscribe ?
3) would Poll based messaging help to resolve ?

I will appreciate your help with this situation and thanks in advance.

Kumar R