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

Q. The default InputFormat is __________ which treats each value of input a new value and the associated key is byte offset.

View solution

Q. __________ controls the partitioning of the keys of the intermediate map-outputs.

View solution

Q. Output of the mapper is first written on the local disk for sorting and _________ process.

View solution

Q. _________ is the name of the archive you would like to create.

View solution

Q. Using Hadoop Archives in __________ is as easy as specifying a different input filesystem than the default file system.

View solution

Q. The __________ guarantees that excess resources taken from a queue will be restored to it within N minutes of its need for them.

View solution

Q. _________ is a pluggable Map/Reduce scheduler for Hadoop which provides a way to share large clusters.

View solution

Q. Which of the following parameter describes destination directory which would contain the archive?

View solution