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Free HDPCD – Hortonworks Data Platform Certified Developer Practice Test Question

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Showing 7–9 of 10 questions

Question 7

Which project gives you a distributed, Scalable, data store that allows you random, realtime read/write access to hundreds of terabytes of data?

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    HBase
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    Hue
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    Pig
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    Hive
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    Oozie
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    Flume
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    Sqoop
Question 8

All keys used for intermediate output from mappers must:

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  • ○

    Implement a splittable compression algorithm.
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    Be a subclass of FileInputFormat.
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    Implement WritableComparable.
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    Override isSplitable.
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    Implement a comparator for speedy sorting.
Question 9

You have just executed a MapReduce job. Where is intermediate data written to after being emitted from the Mapper’s map method?

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    Intermediate data in streamed across the network from Mapper to the Reduce and is never written to disk.
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    Into in-memory buffers on the TaskTracker node running the Mapper that spill over and are written into HDFS.
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    Into in-memory buffers that spill over to the local file system of the TaskTracker node running the Mapper.
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    Into in-memory buffers that spill over to the local file system (outside HDFS) of the TaskTracker node running the Reducer
  • ○

    Into in-memory buffers on the TaskTracker node running the Reducer that spill over and are written into HDFS.