November 2014
Beginner to intermediate
326 pages
7h 4m
English
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Hadoop optimization
If we have an optimized Hadoop cluster, a lot of problems are easily solved for other Hadoop ecosystem components on the cluster, for example HBase. So, now let's see some of the factors using which we can optimize Hadoop.
General optimization tips
These are some general optimization tips that will help us to optimize Hadoop:
- Create a dedicated Hadoop/HBase user to run the daemons.
- Try to use SSD for the NameNode metadata.
- The NameNode metadata must be backed up periodically; it can be either on an hourly or daily basis. If it contains very valuable data, it must be backed up every 5 to 10 minutes. We can write crons to copy with the metadata directory.
- We must have multiple metadata directories for NameNode, which can be specified ...
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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.