What is the result of the following command (the database username is foo and password is bar)?
$ sqoop list-tables – – connect jdbc : mysql : / / localhost/databasename – – table – – username foo – – password bar
A. sqoop lists only those tables in the specified MySql database that have not already been imported into FDFS
B. sqoop returns an error
C. sqoop lists the available tables from the database
D. sqoopimports all the tables from SQLHDFS
You are configuring your cluster to run HDFS and MapReduce v2 (MRv2) on YARN.
Which daemons need to be installed on your clusters master nodes?
You need to analyze 60,000,000 images stored in JPEG format, each of which is approximately 25 KB. Because you Hadoop cluster isn’t optimized for storing and processing many small files, you decide to do the following actions:
1. Group the individual images into a set of larger files
2. Use the set of larger files as input for a MapReduce job that processes them directly with python using Hadoop streaming.
Which data serialization system gives the flexibility to do this?