how to reduce the number of containers in the query
问题 I have a query using to much containers and to much memory. (97% of the memory used). Is there a way to set the number of containers used in the query and limit the max memory? The query is running on Tez. Thanks in advance 回答1: Controlling the number of Mappers: The number of mappers depends on various factors such as how the data is distributed among nodes, input format, execution engine and configuration params. See also How initial task parallelism works MR uses CombineInputFormat, while