[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fNGepWnDaS-mIaOqLxzIHORO6Zrvr5LXFm5pAqoN-DEE":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2025-01-06 16:12:17",176641732,[8,9,10,11],"1:1","1:N","N:1","N:M",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},27,"8ff290daf91f545efa00d047d43314b4","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F79ef4765837ccedbc6c3cfe59bda3fa6.png","大数据平台与编程实践(Hadoop)","work_38821468","","在MapTask中Shuffle的数据分区数量(numPartitions)与ReduceTasks的数量关系是( )?",[21,33,42,50,59,68,77,86,89,98],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2025-01-06 16:12:16",176641715,[26,27,28,29],"String","Text","int","float","以下哪个是MapReduce的数据类型?","v1",1,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],176641719,[37,38,39,40],"MapTask","ReduceTask","Client","ResourceManager","MapReduce负责生成切片计划的角色是( )?",{"answer":43,"createTime":5,"id":44,"options":45,"question":49,"source":31,"type":32},[],176641722,[46,47,48],"split&lt;block","split=block","split&gt;block","以下哪种配置会导致&quot;数据向计算移动&quot;的情况?",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":31,"type":32},[],176641724,[54,55,56,57],"1","2","3","4","Shuffle过程至少进行几次排序?",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":31,"type":32},[],176641726,[63,64,65,66],"CPU","内存","网络带宽","磁盘IO","MapReduce主要的性能瓶颈是什么?",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":31,"type":32},[],176641728,[72,73,74,75],"block数量","split大小","集群节点数量","分区数","在MapReduce过程中,MapTask并行度与下面哪个因素直接相关?",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":31,"type":32},[],176641730,[81,82,83,84],"TextInputFormat","Partitioner","Mapper","Combiner","以下哪个组件负责将输入数据集格式化成键-值对(Key-Value Pairs),其中值(Value)为每一行内容,键(Key)为字节偏移量",{"answer":87,"createTime":5,"id":6,"options":88,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":31,"type":32},[],176641734,[93,94,95,96],"group : partition = 1:N","group : partition = N:1","map : reduce = 1:N","map : reduce = N:1","以下哪个设置可能会导致某些ReduceTask没有数据处理?",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":31,"type":32},[],176641736,[102,103,104,105],"80MB","100MB","200MB","1024MB","环形缓冲区默认大小为( )"]