Number of cores by default Spark local mode takes

Question

当 spark 在本地模式下运行时，执行程序需要的核心数是多少，如果我没有在命令中提到核心数，如下所示

./start-shell --master local

Answer 1

I got the answer for my question and I just wanted to put it here. If user mentions just "local" without specifying any number of cores, it just takes only 1 core.

If its "local[N]", takes N cores If its "local[*]", takes all the cores available.