최신 CCA-505 무료덤프 - Cloudera Certified Administrator for Apache Hadoop (CCAH) CDH5 Upgrade

A. Configure yarn.nodemanager.resource.memory-mb and yarn.nodemanager.resource.cpu-vcores to match the capacity you require under YARN for each NodeManager

B. You don't need to configure or balance these properties in YARN as YARN dynamically balances resource management capabilities on your cluster

C. Configure mapred.tasktracker.map.tasks.maximum and mapred.tasktracker.reduce.tasks.maximum ub yarn.site.xml to match your cluster's configured capacity set by yarn.scheduler.minimum-allocation

D. Configure yarn.applicationmaster.resource.memory-mb and yarn.applicationmaster.cpuvcores so that ApplicationMaster container allocations match the capacity you require.

A. Delete the /swapfile file on the node

B. Set vm.swappiness to o in /etc/sysctl.conf

C. Delete the /etc/swap file on the node

D. Delete the /dev/vmswap file on the node

E. Set the ram.swap parameter to o in core-site.xml

A. The Mapper transfers the intermediate data immediately to the Reducers as it generated by the Map task

B. YARN holds the intermediate data in the NodeManager's memory (a container) until it is transferred to the Reducers

C. The Mapper stores the intermediate data in HDFS on the node where the MAP tasks ran in the HDFS /usercache/&[user]sppcache/application_&(appid) directory for the user who ran the job

D. The Mapper stores the intermediate data on the mode running the job's ApplicationMaster so that is available to YARN's ShuffleService before the data is presented to the Reducer

E. The Mapper stores the intermediate data on the underlying filesystem of the local disk in the directories yarn.nodemanager.local-dirs

A. Modify yarn-site.xml with the following property: <name>yarn.nodemanager.resource.cpu-vcores</name> <value>16</value>

B. Modify yarn-site.xml with the following property: <name>yarn.scheduler.minimum-allocation-mb</name> <value>4096</value>

C. Modify yarn-site.xml with the following property: <name>yarn.scheduler.minimum-allocation-mb</name> <value>2048</value>

D. No action is needed: YARN's dynamic resource allocation automatically optimizes the node memory and cores