spark 参数调优10-Dynamic Allocation动态分配

spark参数调优系列 目录地址:

https://blog.csdn.net/zyzzxycj/article/details/81011540

 

⑩ Dynamic Allocation 动态分配

spark.dynamicAllocation.enabled

是否开启动态资源配置,根据工作负载来衡量是否应该增加或减少executor,默认false

以下相关参数:

spark.dynamicAllocation.minExecutors

动态分配最小executor个数,在启动时就申请好的,默认0

spark.dynamicAllocation.maxExecutors

动态分配最大executor个数,默认infinity

spark.dynamicAllocation.initialExecutors

动态分配初始executor个数默认值=spark.dynamicAllocation.minExecutors

spark.dynamicAllocation.executorIdleTimeout

当某个executor空闲超过这个设定值,就会被kill,默认60s

spark.dynamicAllocation.cachedExecutorIdleTimeout

当某个缓存数据的executor空闲时间超过这个设定值,就会被kill,默认infinity

spark.dynamicAllocation.schedulerBacklogTimeout

任务队列非空,资源不够,申请executor的时间间隔,默认1s

spark.dynamicAllocation.sustainedSchedulerBacklogTimeout

同schedulerBacklogTimeout,是申请了新executor之后继续申请的间隔,默认=schedulerBacklogTimeout

你可能感兴趣的:(hadoop,spark)