July 2015
Beginner to intermediate
162 pages
3h 31m
English
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Placing tasks next to the data
The capability to run a task in a specific target location becomes much more useful when it comes to data affinity. This means that if we are going to interact with the distributed data that is being held within the cluster, it is optimal to colocate the task execution close to where the required data is actually held. This will reduce the latency of the task by avoiding the networking cost of having to retrieve the dependency data from the other nodes across the cluster before the processing can actually occur. By making the task PartitionAware, we can return a key with which the task is going to interact. From this, it is established which partition the key belongs to, and hence, the member node that holds the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.