hi,
Based on my testing, the memory cost is very different for
1. sql("select * from ...").groupby.agg
2. sql("select ... From ... Groupby ...").For table.partition sized more than 500g, 2# run good, while outofmemory happened in 1#. I am using the same spark configurations. Could somebody tell why this happened? 发自 网易邮箱大师
