Large Information 7: yorkr waltzes with Apache NiFi

On this publish, I assemble an end-to-end Apache NiFi pipeline with my R package deal yorkr. This publish is a mirror of my earlier publish Large Information-5: kNiFing by way of cricket information with yorkpy based mostly on my Python package deal yorkpy. The  Apache NiFi Information Pipeilne  flows all the best way from the supply, the place the info is obtained, all the best way  to focus on analytics output. Apache NiFi was created to automate the circulate of information between methods.  NiFi dataflows allow the automated and managed circulate of knowledge between methods. This publish automates the circulate of information from Cricsheet, from the place the zip file it’s downloaded, unpacked, processed, reworked and at last T20 gamers are ranked.

This publish makes use of the features of my R package deal yorkr to rank IPL gamers. This can be a instance circulate, of a typical Large Information pipeline the place the info is ingested from many numerous supply methods, reworked after which lastly insights are generated. Whereas I execute this NiFi instance with my R package deal yorkr, in a typical Large Information pipeline the place the info is large, of the order of 100s of GB, we’d be utilizing the Hadoop ecosystem with Hive, HDFS Spark and so forth. Because the information is taken from Cricsheet, that are few Megabytes, this method would suffice. Nonetheless if we hypothetically assume that there are a number of batches of cricket information which can be being uploaded to the supply, of various cricket matches taking place everywhere in the world, and the historic information exceeds a number of GBs, then we may use an identical Apache NiFi sample to course of the info and generate insights. If the info is was massive and distributed throughout the Hadoop cluster , then we would wish to make use of SparkR or SparklyR to course of the info.

That is proven beneath pictorially

Whereas this publish shows the ranks of IPL batsmen, it’s doable to create a cool dashboard utilizing UI/UX applied sciences like AngularJS/ReactJS.  Check out my publish Large Information 6: The T20 Dance of Apache NiFi and yorkpy the place I create a easy dashboard of a number of analytics

My R package deal yorkr can deal with each males’s and girls’s ODI, and all codecs of T20 in Cricsheet particularly Intl. T20 (males’s, girls’s), IPL, BBL, Natwest T20, PSL, Ladies’s BBL and so on. To know extra particulars about yorkr see Revitalizing R package deal yorkr

The code will be forked from Github at yorkrWithApacheNiFi

You’ll be able to check out the reside demo of the NiFi pipeline at yorkr waltzes with Apache NiFi

Primary Stream

1. General circulate

The general NiFi circulate incorporates 2 Course of Teams a) DownloadAnd Unpack. b) Convert and Rank IPL batsmen. Whereas it seems that the Course of Teams are disconnected, they don’t seem to be. The primary course of group downloads the T20 zip file, unpacks the. zip file and saves the YAML recordsdata in a selected folder. The second course of group displays this folder and begins processing as quickly the YAML recordsdata can be found. It processes the YAML changing it into dataframes earlier than storing it as CSV file. The following  processor then does the precise rating of the batsmen earlier than writing the output into IPLrank.txt

1.1 DownloadAndUnpack Course of Group

This course of group is proven beneath

1.1.1 GetT20Information

The GetT20Information Processor downloads the zip file given the URL

The ${T20information} variable factors to the precise T20 format that must be downloaded. I’ve set this to This may very well be set another information set. In reality we may have parallel information flows for various T20/ Sports activities information units and generate

1.1.2 SaveUnpackedData

This processor shops the YAML recordsdata in a predetermined folder, in order that the info will be picked up  by the 2nd Course of Group for processing

1.2 ProcessAndRankT20Gamers Course of Group

That is the second course of group which converts the YAML recordsdata to pandas dataframes earlier than storing them as. CSV recordsdata. The RankIPLPlayers will then learn all of the CSV recordsdata, stack them after which proceed to rank the IPL gamers. The Course of Group is proven beneath

1.2.1 ListFile and FetchFile Processors

The left 2 Processors ListFile and FetchFile get all of the YAML recordsdata from the folder and cross it to the following processor

1.2.2 convertYaml2DataFrame Processor

The convertYaml2DataFrame Processor makes use of the ExecuteStreamCommand which name Rscript. The Rscript invoked the yorkr perform convertYaml2DataframeT20() as proven beneath

I additionally use a 16 concurrent duties to transform 16 totally different flowfiles directly

convertYaml2RDataframeT20(args[1], args[2], args[3])

1.2.Three MergeContent Processor

This processor’s solely job is to set off the rankIPLPlayers when all of the FlowFiles have merged into 1 file.

1.2.Four RankT20Gamers

This processor is an ExecuteStreamCommand Processor that executes a Rscript which invokes a yorrkr perform rankIPLT20Batsmen()

args<-commandArgs(TRUE) rankIPLBatsmen(args[1],args[2],args[3])

1.2.5 OutputRankofT20Participant Processor

This processor writes the generated rank to an output file.

1.Three Ultimate Rating of IPL T20 gamers

The Nodejs based mostly internet server picks up this file and shows on the net web page the ultimate ranks (the code is predicated on a superb youtube for studying from file)

[1] "Chennai Tremendous Kings"
[1] "Deccan Chargers"
[1] "Delhi Daredevils"
[1] "Kings XI Punjab"
[1] "Kochi Tuskers Kerala"
[1] "Kolkata Knight Riders"
[1] "Mumbai Indians"
[1] "Pune Warriors"
[1] "Rajasthan Royals"
[1] "Royal Challengers Bangalore"
[1] "Sunrisers Hyderabad"
[1] "Gujarat Lions"
[1] "Rising Pune Supergiants"
[1] "Chennai Tremendous Kings-BattingDetails.RData"
[1] "Deccan Chargers-BattingDetails.RData"
[1] "Delhi Daredevils-BattingDetails.RData"
[1] "Kings XI Punjab-BattingDetails.RData"
[1] "Kochi Tuskers Kerala-BattingDetails.RData"
[1] "Kolkata Knight Riders-BattingDetails.RData"
[1] "Mumbai Indians-BattingDetails.RData"
[1] "Pune Warriors-BattingDetails.RData"
[1] "Rajasthan Royals-BattingDetails.RData"
[1] "Royal Challengers Bangalore-BattingDetails.RData"
[1] "Sunrisers Hyderabad-BattingDetails.RData"
[1] "Gujarat Lions-BattingDetails.RData"
[1] "Rising Pune Supergiants-BattingDetails.RData"
# A tibble: 429 x Four batsman matches meanRuns meanSR 1 DA Warner 130 37.9 128. 2 LMP Simmons 29 37.2 106. Three CH Gayle 125 36.2 134. Four HM Amla 16 36.1 108. 5 ML Hayden 30 35.9 129. 6 SE Marsh 67 35.9 120. 7 RR Pant 39 35.3 135. Eight MEK Hussey 59 33.8 105. 9 KL Rahul 59 33.5 128.
10 MN van Wyk 5 33.4 112.
# … with 419 extra rows


This publish demonstrated an end-to-end pipeline with Apache NiFi and R package deal yorkr. You’ll be able to this pipeline and generated totally different analytics utilizing the assorted features of yorkr and show them on a dashboard.

Hope you loved with publish!

See additionally
1. The mechanics of Convolutional Neural Networks in Tensorflow and Keras
2. Deep Studying from first rules in Python, R and Octave – Half 7
3. Enjoyable simulation of a Chain in Android
4. Pure language processing: What would Shakespeare say?
5. TWS-4: Gossip protocol: Epidemics and rumors to the rescue
6. Cricketr learns new methods : Performs fine-grained evaluation of gamers
7. Introducing QCSimulator: A 5-qubit quantum computing simulator in R
8. Sensible Machine Studying with R and Python – Half 5
9. Cricpy provides workforce analytics to its arsenal!!

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