运行flink任务报下面错误：

Caused by: java.util.concurrent.CompletionException: org.apache.flink.runtime.jobmanager.scheduler.NoResourceAvailableException: Could not acquire the minimum required resources. at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292) at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308) at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:593) at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:577) … 37 more Caused by: org.apache.flink.runtime.jobmanager.scheduler.NoResourceAvailableException: Could not acquire the minimum required resources.

这个错误表示你的Flink集群没有足够的任务槽来满足你的作业需求。你需要增加每个TaskManager的槽数或者增加TaskManager的实例数¹²。Flink本身不能触发动态扩缩容，你只能手动启动更多的TaskManager或者修改TaskManager的配置并重启¹。如果你的TaskManager在作业运行时挂掉了，你可以定义一个重启策略（注意你需要开启检查点）³。