Q. Which of the following scripts that generate more than three MapReduce jobs?

  • (A) a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); b = group a by (j#'PIG_SCRIPT_ID', j#'USER', j#'JOBNAME'); c = for b generate group.$1, group.$2, COUNT(a); d = filter c
  • (B) a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); b = display a by (j#'PIG_SCRIPT_ID', j#'USER', j#'JOBNAME'); c = foreach b generate group.$1, group.$2, COUNT(a); d = fi
  • (C) a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); b = group a by (j#'PIG_SCRIPT_ID', j#'USER', j#'JOBNAME'); c = foreach b generate group.$1, group.$2, COUNT(a); d = filt
  • (D) None of the mentioned
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✅ Correct Answer: (C) a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); b = group a by (j#'PIG_SCRIPT_ID', j#'USER', j#'JOBNAME'); c = foreach b generate group.$1, group.$2, COUNT(a); d = filt

Published by Sandhya Thakur ⭐ 4.08K Points at 17-Mar-2025 12:19 pm in Hadoop

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