Q. The need for data replication can arise in various scenarios like ____________

View solution

Q. ________ is the slave/worker node and holds the user data in the form of Data Blocks.

View solution

Q. HDFS provides a command line interface called __________ used to interact with HDFS.

View solution

Q. HDFS is implemented in _____________ programming language.

View solution

Q. For YARN, the ___________ Manager UI provides host and port information.

View solution

Q. For ________ the HBase Master UI provides information about the HBase Master uptime.

View solution

Q. During start up, the ___________ loads the file system state from the fsimage and the edits log file.

View solution

Q. In order to read any file in HDFS, instance of __________ is required.

View solution

Q. ______________ is method to copy byte from input stream to any other stream in Hadoop.

View solution

Q. _____________ is used to read data from bytes buffers.

View solution

Q. Interface ____________ reduces a set of intermediate values which share a key to a smaller set of values.

View solution

Q. Reducer is input the grouped output of a ____________

View solution

Q. The output of the reduce task is typically written to the FileSystem via ____________

View solution

Q. Applications can use the _________ provided to report progress or just indicate that they are alive.

View solution

Q. Which of the following parameter is to collect keys and combined values?

View solution

Q. ________ is a programming model designed for processing large volumes of data in parallel by dividing the work into a set of independent tasks.

View solution

Q. The daemons associated with the MapReduce phase are ________ and task-trackers.

View solution

Q. The JobTracker pushes work out to available _______ nodes in the cluster, striving to keep the work as close to the data as possible.

View solution

Q. InputFormat class calls the ________ function and computes splits for each file and then sends them to the jobtracker.

View solution

Q. On a tasktracker, the map task passes the split to the createRecordReader() method on InputFormat to obtain a _________ for that split.

View solution