Thanks youe reply.  Unfortunately, an upgrade is not available at this time in my company. I have rebalance my tablet server and modified the config 【maintenance_manager_num_threads】to 8 , 【block_cache_capacity_mb】 to 512MB, 【memory_limit_hard_bytes】to 60G。 AND then I try to run MR job on yarn, when get map counts with 96, and memory with 194G on yarn, kudu server is stable. So I continue to run a few job on yarn to to observe Kudu, and kudu server is still stable. So I think it is ok and set up scheduling tasks.   But when today, a job run 179 maps, the kudu server is random quit... this is the memory detail one of tablet server     ... View more