Advanced MapReduce Concepts MCQ question and answer with solution | Hadoop MCQs

A. TextFormat

B. TextOutput

C. TextOutputFormat

D. None of the mentioned

A. Hadoop does have the definition of group by itself

B. MapReduce JobHistory server run as same user such as mapred

C. SSO environment is managed using Kerberos with LDAP for Hadoop in secure mode

D. None of the mentioned

A. ROM_DISK

B. ARCHIVE

C. RAM_DISK

D. All of the mentioned

A. The multiple of the queue capacity which can be configured to allow a single user to acquire more resources

B. Changing queue properties and adding new queues is very simple

C. Queues cannot be deleted, only addition of new queues is supported

D. None of the mentioned

A. getInstance() creates a new Job with particular cluster

B. getInstance(Configuration conf) creates a new Job with no particular Cluster and a given Configuration

C. getInstance(JobStatus status, Configuration conf) creates a new Job with no particular Cluster and given Configuration and JobStatus

D. all of the mentioned

A. Yet Another Reserve Negotiator

B. Yet Another Resource Network

C. Yet Another Resource Negotiator

D. All of the mentioned

A. With TextInputFormat and KeyValueTextInputFormat, each mapper receives a variable number of lines of input

B. StreamXmlRecordReader, the page elements can be interpreted as records for processing by a mapper

C. The number depends on the size of the split and the length of the lines.

D. All of the mentioned

A. 0.21

B. 0.23

C. 0.24

D. 0.26

A. When there is enough space, block replicas are stored according to the storage type list

B. One_SSD is used for storing all replicas in SSD

C. Hot policy is useful only for single replica blocks

D. All of the mentioned

A. CombineFileOutputFormat

B. CombineFileInputFormat

C. TextFileInputFormat

D. None of the mentioned