This traces defines the info format of your fields inside the file. We’ll would like to refer back again to it afterwards.
สมัครสมาชิก สล็อตเว็บตรง ไม่ผ่านเอเย่นต์ ทำได้ง่ายๆ ไม่กี่ขั้นตอน
This strains defines the info structure with the fields within the file. We’ll need to refer back again to it afterwards.
We also grab the depend of things to have the amount of books for that creator/12 months combination. You could begin to see the resulting information structure while in the DESCRIBE results.
เลือก เว็บพนันออนไลน์ ทดลองเล่นที่น่าเชื่อถือ เล่นกับเว็บที่มีรีวิวดี และมีใบอนุญาตเพื่อความปลอดภัย
บา คา ร่า ออนไลน์ คู่มือการเล่นและเคล็ดลับทำกำไรสำหรับมือใหม่และมือโปร
The set up and configuration of Hadoop and Hive is further than the scope of this article. If you’re just getting started, I would very advocate grabbing one among Cloudera’s pre-created Digital devices which have almost everything you may need.
You’ll see a listing of years, together with the variety of books for that calendar year. Chances are you'll observe that several of the values don’t make A lot perception; there really should be no yr 0, nor should there be entries for just a blank 12 months. We’ll thoroughly clean Those people troubles up in the following Evaluation.
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This is actually the meat in the operation. The FOREACH loops in excess of the groupByYear collection, and we Produce values. Our output is defined utilizing some values available to us within the FOREACH. We initial consider group, which is an alias for the grouping value and say to place it within our new assortment being an merchandise named YearOfPublication.
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I’m assuming that you will be functioning the next steps using the Cloudera VM, logged in as being the cloudera user. In the event your setup differs, modify appropriately.
You must continue to have your publications selection described if you haven’t exited your Pig session. It is possible to redefine it conveniently by subsequent the above mentioned steps once more. Permit’s do a little bit of cleanup on the data this time, on the other hand.
Kind head BX-Publications.csv to view the 1st couple lines from the raw knowledge. You’ll detect that’s it’s not likely comma-delimited; the delimiter is ‘;‘. There are also some escaped HTML entities we are able to thoroughly clean up, along with the quotations all-around the entire values is often eradicated.