Explanation:Hadoop script can be used to invoke any class. 9. Which of the following command runs the HDFS secondary namenode ?
A. secondary namenode
B. secondarynamenode
C. secondary_namenode
D. None of the mentioned
Answer:A
Explanation:Hadoop script can be used to invoke any class. 9. Which of the following command runs the HDFS secondary namenode ?
A. secondary namenode B. secondarynamenode C. secondary_namenode D. None of the mentioned
Explanation:The secondary NameNode merges the fsimage and the edits log files periodically and keeps edits log size within a limit. 10. Which of the following is used for the MapReduce job Tracker node ?