LinkedIn Hadoop

linkedin Hadoop assessment answers

To verify job status, look for the value _ in the _.?

•  SUCCEEDED; syslog
•  SUCCEEDED; stdout
•  DONE; syslog
•  DONE; stdout

linkedin Hadoop Quiz

Which line of code implements a Reducer method in MapReduce 2.0?

• public static void reduce(Text key, Iterator values, Context context){…}
• public void reduce(Text key, Iterator values, Context context){…}
• public void reduce(Text key, IntWritable[] values, Context context){…}
• public static void reduce(Text key, IntWritable[] values, Context context){…}

Hadoop linkedin assessment answers

To get the total number of mapped input records in a map job task, you should review the value of which counter?

• FileInputFormatCounter
• JobCounter
• TaskCounter
• FileSystemCounter