flink taskmanager 挂掉 报错No pooled slot available and request to ResourceManager for new slot failed

flink taskmanager 挂掉 报错No pooled slot available and request to ResourceManager for new slot failed

1、解决办法：调大taskmanager.memory.process.size 参数的数值。

2、导致此问题的原因：

       taskmanager.memory.process.size 数值太小  task任务内存溢出导致 taskManager 挂掉，

       taskmanager 挂掉导致提交的任务没有可用的slot，所以报 No pooled slot available and                      request to ResourceManager for new slot failed  错误。