节点down导致数据最终不一致

[zz630]

5节点（2.0.3），用nacos-client（1.4.2）在上面注册100个临时实例，把维持客户端心跳的线程数扩大到32防止堆积。
手动下线2节点，剩下节点a（实例数81健康数81）、节点b（实例数100健康数88）、节点c（实例数100健康数93），等了很久也不一致，稳定复现。

curl http://127.0.0.1:8848/nacos/v1/ns/upgrade/ops/metrics
upgraded = true
isAll20XVersion = true
isDoubleWriteEnabled = true

看naming-server.log发现只有一个节点c有receive invalid redirect request from peer 的日志，推测不是DistroFilter转发导致的心跳失效

[zz630]

参考了#7151
不是同一个问题，用arthas观察com.alibaba.nacos.common.task.engine.TaskExecuteWorker#queue没写满，才1k多

[stale]

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