Avro schemas are defined with . . . . . . . .
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Hadoop · all questionsHadoop Input Output Operations
Hadoop Input Output Operations
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The HDFS file system is temporarily unavailable whenever the HDFS . . . . . . . . is down.
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. . . . . . . . typically compresses files to within 10% to 15% of the best available techniques.
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Point out the correct statement.
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Automatic restart and . . . . . . . . of the NameNode software to another machine is not supported.
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The . . . . . . . . as just the value field append(value) and the key is a LongWritable that contains the record number, count + 1.
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The . . . . . . . . file is populated with the key and a LongWritable that contains the starting byte position of the record.
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Which of the following is a primitive data type in Avro?
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Which of the following compression is similar to Snappy compression?
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Apache Hadoop . . . . . . . . provides a persistent data structure for binary key-value pairs.
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HDFS, by default, replicates each data block . . . . . . . . times on different nodes and on at least . . . . . . . . racks.
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Point out the wrong statement.
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. . . . . . . . stores its metadata on multiple disks that typically include a non-local file server.
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Point out the wrong statement.
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The . . . . . . . . codec uses Google's Snappy compression library.
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Which of the following supports splittable compression?
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Gzip (short for GNU zip) generates compressed files that have a . . . . . . . . extension.
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The LZO compression format is composed of approximately . . . . . . . . blocks of compressed data.
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Which of the following is the slowest compression technique?
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Point out the correct statement.
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