Explanation:To get the values in a streaming job’s mapper/reducer use the parameter names with the underscores. 7. The standard output (stdout) and error (stderr) streams of the task are read by the TaskTracker and logged to :
A. ${HADOOP_LOG_DIR}/user
B. ${HADOOP_LOG_DIR}/userlogs
C. ${HADOOP_LOG_DIR}/logs
D. None of the mentioned
Answer:A
Explanation:To get the values in a streaming job’s mapper/reducer use the parameter names with the underscores. 7. The standard output (stdout) and error (stderr) streams of the task are read by the TaskTracker and logged to :
A. ${HADOOP_LOG_DIR}/user B. ${HADOOP_LOG_DIR}/userlogs C. ${HADOOP_LOG_DIR}/logs D. None of the mentioned
Explanation:The child-jvm always has its current working directory added to the java.library.path and LD_LIBRARY_PATH. 8. ____________ is the primary interface by which user-job interacts with the JobTracker.