Kvizo pri la Skribebla Interfaco en la Hadoopa org

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Questions and Answers

Which interface is imported in the given Java code?

  • java.io.DataInput
  • java.io.IOException
  • java.io.DataOutput
  • org.apache.hadoop.io.Writable (correct)

What is the purpose of the 'Writable' interface?

  • To write data to a file
  • To serialize and deserialize data (correct)
  • To read data from a file
  • To compress data

What exceptions may be thrown by the methods in the 'Writable' interface?

  • java.lang.ClassNotFoundException
  • java.lang.IllegalArgumentException
  • java.io.IOException (correct)
  • java.lang.NullPointerException

Which compression types are available for the PARQUET format when configuring the fq-import-remote-conf.xml template?

<p>Snappy, gzip, uncompressed (D)</p> Signup and view all the answers

What is the default compression type used for Hadoop formats when the fq.output.compressed parameter is set to false or left empty?

<p>The default compression type specified on Hadoop for the selected format (A)</p> Signup and view all the answers

What is the purpose of the fq.data.format property in the fq-import-remote-conf.xml template?

<p>To set the data format for the imported data (A)</p> Signup and view all the answers

If you want to select the SEQUENCEFILE format, you need to specify the exact class name of the codec which is available on the ______ system.

<p>Hadoop</p> Signup and view all the answers

To use compression with the AVRO format, you can select either snappy or ______ as the compression type.

<p>deflate</p> Signup and view all the answers

The fq.output.compressed parameter should be set to 'false' or left ______ to use the default compression type for the selected format in Hadoop.

<p>empty</p> Signup and view all the answers

Should the fq.data.format property in the fq-import-remote-conf.xml template be set to one of the specified options?

<p>True (A)</p> Signup and view all the answers

Is mixed mode of transfer supported when using Hadoop formats?

<p>False (B)</p> Signup and view all the answers

Can the default compression type be used for Hadoop formats when the fq.output.compressed parameter is set to false or left empty?

<p>True (A)</p> Signup and view all the answers

Is it possible to use compression with the ORC format?

<p>True (A)</p> Signup and view all the answers

Is it necessary to specify the exact class name of the codec when using the RCFILE format?

<p>True (A)</p> Signup and view all the answers

Can mixed mode of transfer be used when working with Hadoop formats?

<p>False (B)</p> Signup and view all the answers

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