Shoothzj opened a new issue #9234:
URL: https://github.com/apache/pulsar/issues/9234
**Describe the bug**
```
2021-01-19 04:07:03,560Z [bookkeeper-ml-workers-OrderedExecutor-0-0] WARN
org.apache.bookkeeper.common.util.OrderedExecutor - Runnable java.util.concurre
nt.CompletableFuture$UniAccept@78d636f0:class
java.util.concurrent.CompletableFuture$UniAccept took too long 60007267 micros
to execute.
```
Then the thread's debug log
```
2021-01-19 04:06:03,552Z [bookkeeper-ml-workers-OrderedExecutor-0-0] DEBUG
org.apache.bookkeeper.mledger.impl.EntryCacheImpl -
[15e6e9ef41774be2b0823235de86e9ae/routingdata/persistent/routingdata_3e304e9d-3421-42bf-93ee-8d09971c230d-partition-0]
Invalidated entries up to 849979:16 - Entries removed: 0 - Size removed: 0
2021-01-19 04:06:03,552Z [bookkeeper-ml-workers-OrderedExecutor-0-0] INFO
org.apache.bookkeeper.mledger.impl.ManagedLedgerImpl -
[15e6e9ef41774be2b0823235de86e9ae/routingdata/persistent/routingdata_3e304e9d-3421-42bf-93ee-8d09971c230d-partition-0]
[ab7fd922-8c3e-43eb-b4f9-cbf13972a9d2] Deleted cursor
2021-01-19 04:06:03,552Z [bookkeeper-ml-workers-OrderedExecutor-0-0] DEBUG
org.apache.pulsar.broker.service.persistent.PersistentTopic -
[persistent://15e6e9ef41774be2b0823235de86e9ae/routingdata/routingdata_3e304e9d-3421-42bf-93ee-8d09971c230d-partition-0][ab7fd922-8c3e-43eb-b4f9-cbf13972a9d2]
Cursor deleted successfully
2021-01-19 04:07:03,560Z [bookkeeper-ml-workers-OrderedExecutor-0-0] INFO
org.apache.pulsar.broker.service.persistent.PersistentSubscription -
[persistent://15e6e9ef41774be2b0823235de86e9ae/routingdata/routingdata_3e304e9d-3421-42bf-93ee-8d09971c230d-partition-0][ab7fd922-8c3e-43eb-b4f9-cbf13972a9d2]
Successfully deleted subscription
2021-01-19 04:07:03,560Z [bookkeeper-ml-workers-OrderedExecutor-0-0] INFO
org.apache.pulsar.broker.service.persistent.PersistentTopic -
[persistent://15e6e9ef41774be2b0823235de86e9ae/routingdata/routingdata_3e304e9d-3421-42bf-93ee-8d09971c230d-partition-0][ab7fd922-8c3e-43eb-b4f9-cbf13972a9d2]
The subscription was deleted due to expiration
```
And the pulsar-msg-expiry-monitor hangs too.
**To Reproduce**
Currently, I have no idea to reproduce the probleam.
**Expected behavior**
In other environment, it executes quickly.
**Desktop (please complete the following information):**
- OS: Linux, Huawei Euler OS
**Additional context**
[04.zip](https://github.com/apache/pulsar/files/5834413/04.zip)
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