各位老师，我的flink yarn-session集群，时间长了就jobmanager崩了？

问题1:各位老师，我的flink yarn-session集群，时间长了就jobmanager崩了？Caused by: java.util.concurrent.CompletionException: java.lang.OutOfMemoryError: Metaspace. The metaspace out-of-memory error has occurred. This can mean two things: either Flink Master requires a larger size of JVM metaspace to load classes or there is a class loading leak. In the first case 'jobmanager.memory.jvm-metaspace.size' configuration option should be increased. If the error persists (usually in cluster after several job (re-)submissions) then there is probably a class loading leak in user code or some of its dependencies which has to be investigated and fixed. The Flink Master has to be shutdown... at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:273) at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:280)这是因为什么呢，平时用的时候还好 一但几天没用 这个集群就废了 就得重新启一个 问题2:那为啥时间长了才会崩呢，有什么会一直增长吗 配置文件里我设置了2048，这里调大呗，一般都是1024 1024这么增加吧，我再加1024行不行