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NEW QUESTION: 1
A. Option A
B. Option B
C. Option D
D. Option C
Answer: A
NEW QUESTION: 2
Which of the following Internet connection types uses analog transmission? (Select TWO).
A. Dial-up
B. WiMAX
C. Satellite
D. DSL
E. IDSN
Answer: A,D
NEW QUESTION: 3
CORRECT TEXT
Problem Scenario 14 : You have been given following mysql database details as well as other info.
user=retail_dba
password=cloudera
database=retail_db
jdbc URL = jdbc:mysql://quickstart:3306/retail_db
Please accomplish following activities.
1. Create a csv file named updated_departments.csv with the following contents in local file system.
updated_departments.csv
2 ,fitness
3 ,footwear
1 2,fathematics
1 3,fcience
1 4,engineering
1 000,management
2. Upload this csv file to hdfs filesystem,
3. Now export this data from hdfs to mysql retaildb.departments table. During upload make sure existing department will just updated and new departments needs to be inserted.
4. Now update updated_departments.csv file with below content.
2 ,Fitness
3 ,Footwear
1 2,Fathematics
1 3,Science
1 4,Engineering
1 000,Management
2 000,Quality Check
5. Now upload this file to hdfs.
6. Now export this data from hdfs to mysql retail_db.departments table. During upload make sure existing department will just updated and no new departments needs to be inserted.
Answer:
Explanation:
See the explanation for Step by Step Solution and configuration.
Explanation:
Solution :
Step 1 : Create a csv tile named updateddepartments.csv with give content.
Step 2 : Now upload this tile to HDFS.
Create a directory called newdata.
hdfs dfs -mkdir new_data
hdfs dfs -put updated_departments.csv newdata/
Step 3 : Check whether tile is uploaded or not. hdfs dfs -Is new_data
Step 4 : Export this file to departments table using sqoop.
sqoop export --connect jdbc:mysql://quickstart:3306/retail_db \
-username retail_dba \
--password cloudera \
-table departments \
--export-dir new_data \
-batch \
-m 1 \
-update-key department_id \
-update-mode allowinsert
Step 5 : Check whether required data upsert is done or not. mysql --user=retail_dba - password=cloudera show databases; use retail_db;
show tables;
select" from departments;
Step 6 : Update updated_departments.csv file.
Step 7 : Override the existing file in hdfs.
hdfs dfs -put updated_departments.csv newdata/
Step 8 : Now do the Sqoop export as per the requirement.
sqoop export --connect jdbc:mysql://quickstart:3306/retail_db \
-username retail_dba\
--password cloudera \
--table departments \
--export-dir new_data \
--batch \
-m 1 \
--update-key-department_id \
-update-mode updateonly
Step 9 : Check whether required data update is done or not. mysql --user=retail_dba - password=cloudera show databases; use retail db;
show tables;
select" from departments;