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NEW QUESTION: 1
CORRECT TEXT
Problem Scenario 46 : You have been given belwo list in scala (name,sex,cost) for each work done.
List( ("Deeapak" , "male", 4000), ("Deepak" , "male", 2000), ("Deepika" , "female",
2000),("Deepak" , "female", 2000), ("Deepak" , "male", 1000) , ("Neeta" , "female", 2000))
Now write a Spark program to load this list as an RDD and do the sum of cost for combination of name and sex (as key)
Answer:
Explanation:
See the explanation for Step by Step Solution and configuration.
Explanation:
Solution :
Step 1 : Create an RDD out of this list
val rdd = sc.parallelize(List( ("Deeapak" , "male", 4000}, ("Deepak" , "male", 2000),
("Deepika" , "female", 2000),("Deepak" , "female", 2000), ("Deepak" , "male", 1000} ,
("Neeta" , "female", 2000}}}
Step 2 : Convert this RDD in pair RDD
val byKey = rdd.map({case (name,sex,cost) => (name,sex)->cost})
Step 3 : Now group by Key
val byKeyGrouped = byKey.groupByKey
Step 4 : Nowsum the cost for each group
val result = byKeyGrouped.map{case ((id1,id2),values) => (id1,id2,values.sum)}
Step 5 : Save the results result.repartition(1).saveAsTextFile("spark12/result.txt")
NEW QUESTION: 2
AWS IAMユーザーに最小特権を付与するとはどういう意味ですか？
A. 特定のタスクを実行するために必要な権限のみを付与しています。
IAMポリシーを作成するときは、最小特権を付与するか、タスクの実行に必要なアクセス許可のみを付与するという標準のセキュリティアドバイスに従ってください。ユーザー（およびロール）が実行する必要があることを決定し、それらのタスクのみを実行できるようにするポリシーを作成します。
B. AWSIAMポリシーのみを使用してアクセス許可を付与しています。
C. 1人のユーザーにのみ権限を付与しています。
D. 信頼できるユーザーにAdministratorAccessポリシー権限を付与しています。
Answer: A
NEW QUESTION: 3
What happens by default on an Alcatel-Lucent 7750 SR when a VPLS accepts a tagged frame at the ingress SAP 1/1/1:100?
A. The FCS is verified and removed from the frame. The VLAN tag is kept for transport over the network.
B. The FCS is verified and kept in the customer frame. The VLAN tag is kept and transported over the network.
C. The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network.
D. The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network.
Answer: C
NEW QUESTION: 4
統合アーキテクトには、次の要件があります。
-アプリケーションとサービスが互いに直接電話することなく確実に通信できるようにします
-アプリケーションアーキテクチャにプロセスの独立性を導入する
-システム全体のフォールトトレランスと信頼性を向上させます。
アーキテクトはどの最新の統合パターンを選択する必要がありますか？
A. アプリケーションデータの統合
B. 高速ファイル転送
C. イベントドリブンのパブリッシュ/サブスクライブ
D. API統合
Answer: B
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