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NEW QUESTION: 1
You should enable the user to add additional values to a list item at run time. You must also ensure that the Record Group LOCATIONS, which is used to populate the list item, can be updated with any user-supplied value. What two actions could you take to accomplish this? (Choose two.)
A. Add a new value to LOCATIONS by calling the ADD_GROUP_ROW and
SET_GROUP_NUMBER_CELL built-ins.
B. Add a new value to LOCATIONS by calling the ADD_GROUP_ROW and
SET_GROUP_CHAR_CELL built-ins.
C. Add a new value to LOCATIONS by calling the POPULATE_GROUP built-in.
D. Remove duplicate values in LOCATIONS by calling the DELETE_LIST_ELEMENT built- in.
E. Add a new value to the list item by calling the POPULATE_LIST built-in.
F. Add a new value to the list item by calling the ADD_LIST_ELEMENT built-in.
Answer: B,F
NEW QUESTION: 2
Many organizations create network maps of their network system to visualize the network and understand the
relationship between the end devices and the transport layer that provide services.
Which of the following are the techniques used for network mapping by large organizations?
Each correct answer represents a complete solution. Choose three.
A. Active Probing
B. Packet crafting
C. SNMP-based approaches
D. Route analytics
Answer: A,C,D
NEW QUESTION: 3
CORRECT TEXT
Problem Scenario 74 : You have been given MySQL DB with following details.
user=retail_dba
password=cloudera
database=retail_db
table=retail_db.orders
table=retail_db.order_items
jdbc URL = jdbc:mysql://quickstart:3306/retail_db
Columns of order table : (orderjd , order_date , ordercustomerid, order status}
Columns of orderjtems table : (order_item_td , order_item_order_id ,
order_item_product_id,
order_item_quantity,order_item_subtotal,order_item_product_price)
Please accomplish following activities.
1. Copy "retaildb.orders" and "retaildb.orderjtems" table to hdfs in respective directory p89_orders and p89_order_items .
2. Join these data using orderjd in Spark and Python
3. Now fetch selected columns from joined data Orderld, Order date and amount collected on this order.
4. Calculate total order placed for each date, and produced the output sorted by date.
Answer:
Explanation:
See the explanation for Step by Step Solution and configuration.
Explanation:
Solution:
Step 1 : Import Single table .
sqoop import --connect jdbc:mysql://quickstart:3306/retail_db -username=retail_dba - password=cloudera -table=orders --target-dir=p89_orders - -m1 sqoop import --connect jdbc:mysql://quickstart:3306/retail_db -username=retail_dba - password=cloudera -table=order_items ~target-dir=p89_ order items -m 1
Note : Please check you dont have space between before or after '=' sign. Sqoop uses the
MapReduce framework to copy data from RDBMS to hdfs
Step 2 : Read the data from one of the partition, created using above command, hadoopfs
-cat p89_orders/part-m-00000 hadoop fs -cat p89_order_items/part-m-00000
Step 3 : Load these above two directory as RDD using Spark and Python (Open pyspark terminal and do following). orders = sc.textFile("p89_orders") orderitems = sc.textFile("p89_order_items")
Step 4 : Convert RDD into key value as (orderjd as a key and rest of the values as a value)
#First value is orderjd
ordersKeyValue = orders.map(lambda line: (int(line.split(",")[0]), line))
#Second value as an Orderjd
orderltemsKeyValue = orderltems.map(lambda line: (int(line.split(",")[1]), line))
Step 5 : Join both the RDD using orderjd
joinedData = orderltemsKeyValue.join(ordersKeyValue)
#print the joined data
tor line in joinedData.collect():
print(line)
Format of joinedData as below.
[Orderld, 'All columns from orderltemsKeyValue', 'All columns from orders Key Value']
Step 6 : Now fetch selected values Orderld, Order date and amount collected on this order.
revenuePerOrderPerDay = joinedData.map(lambda row: (row[0]( row[1][1].split(",")[1]( f!oat(row[1][0].split('\M}[4]}}}
#printthe result
for line in revenuePerOrderPerDay.collect():
print(line)
Step 7 : Select distinct order ids for each date.
#distinct(date,order_id)
distinctOrdersDate = joinedData.map(lambda row: row[1][1].split('\")[1] + "," + str(row[0])).distinct() for line in distinctOrdersDate.collect(): print(line)
Step 8 : Similar to word count, generate (date, 1) record for each row. newLineTuple = distinctOrdersDate.map(lambda line: (line.split(",")[0], 1))
Step 9 : Do the count for each key(date), to get total order per date. totalOrdersPerDate = newLineTuple.reduceByKey(lambda a, b: a + b}
#print results
for line in totalOrdersPerDate.collect():
print(line)
step 10 : Sort the results by date sortedData=totalOrdersPerDate.sortByKey().collect()
#print results
for line in sortedData:
print(line)
NEW QUESTION: 4
You are transitioning from a traditional "brick-and-mortar storefront that accepts credit cards to a new e- commerce storefront. Which payment method would be most appropriate during the transition?
A. Open Buying on the Internet (OBI)
B. Credit card with offline processing
C. Advance payment using check or money order
D. Cash on delivery (c.o.d.)
Answer: B