Cloudera-Certified-Administrator-for-Apache-Hadoop-(CCA-332).pdf

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CCA-332 Cloudera Cloudera Certified Administrator for Apache Hadoop
Reference: Wit h_Hadoop/Nagios_Alerts_For_Hadoop_Services.htm(Corrupt/missing block alert, Possible remedies, third bulleted point) QUESTION: 26 For each job, the Hadoop framework generates task log files. Where are these log files stored? A. Onthelocal disk of the slave node running the task. B. In HDFS,in the directoryofthe user who generates the job. C. On the local disk of the slave node running the task, then copied into HDFS. D. On the local disk of the slave node running the task, but logs are discarded immediatelyupontask completion. Answer: B QUESTION: 27 What additional capability does Ganglia provide to that Hadoop alone DOES NOT provide? A. Ability to monitor number of files in HDFS. B. Ability to monitor free task slots. C. Ability to monitor processor utilization.

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