A.hbase-client
B.Zookeeper
C.HMaster
D.HRegionServer

A.提供了类SQL 的查询语言HQL
B.可扩展强
C.提供统一的元数据管理
D.容错行强

A.分为映射，映射为Map 阶段
B.分为减速，减速为Reduce 阶段
C.分为映射，映射为Reduce 阶段
D.分为减速，减速为Map 阶段

A.mapreduce.framework.name
B.mapreduce.jobhistory.address
C.yarn.resourcemanager.address
D.mapreduce.jobhistory.webapp.address

A.core-site.xml
B.hdfs-site.xml
C.mapred-site.xml
D.slaves.xml

A.yarn.resourcemanager.address
B.yarn.resourcemanager.scheduler.address
C.yarn.resourcemanager.admin.address
D.yarn.nodemanager.oux-services

A.http：//hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-common/core-default.xml
B.http：//hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/hdfs-default.xml
C.http：//hadoop.apache.org/docs/current/hadoop-mapreduce-client/hadoop-mapreduce-client-core/mapred-default.xml
D.http：//hadoop.apache.org/docs/current/hadoop-yarn/hadoop-yarn-common/yarn-default.xml

A.修改Master 节点authorized_keys 文件
B.修改Slave 节点authorized_keys 文件
C.验证Master 到每个Slave节点无密码登录
D.验证两个Slave 节点到Master 节点无密码登录

A.扩容能力强
B.成本低
C.高效率
D.高可靠性

A.单机模式
B.伪分布模式
C.全分布模式
D.主备模式