This topic describes tips for tuning parallelism and memory in Presto. The tips are categorized as follows:如果想及时了解Spark、Hadoop或者HBase相关的文章,欢迎关注微信公众号:iteblog_hadoopTuning Parallelism at a Task LevelThe number of splits in a cluster = node-scheduler.max-splits-per-node * number of worker nodes.The node-scheduler.max-splits-per-node denotes the target value for the total num