前言在处理小数据量时如果采用集群模式涉及到网络和启用不同机器计算资源速率还不如本地单机执行。由此可以对此小数据任务开启本地模式执行会话级别开启本地模式--开启本地模式SEThive.exec.mode.local.autotrue;--设置最大输入数据量例如 50MB数据小于50MB就本地模式SEThive.exec.mode.local.auto.inputbytes.max52428800;--设置最大输入文件个数SEThive.exec.mode.local.auto.input.files.max10;--设置最大 Map 任务数SEThive.exec.mode.local.auto.tasks.max4;永久开启配置propertynamehive.exec.mode.local.auto/namevaluetrue/valuedescriptionEnable Hive to run in local mode automatically/description/propertypropertynamehive.exec.mode.local.auto.inputbytes.max/namevalue134217728/valuedescriptionMaximum input bytes for local mode/description/propertypropertynamehive.exec.mode.local.auto.input.files.max/namevalue4/valuedescriptionMaximum input files for local mode/description/propertypropertynamehive.exec.mode.local.auto.tasks.max/namevalue4/valuedescriptionMaximum map tasks for local mode/description/property