cxzl25 commented on issue #7309:
URL: https://github.com/apache/kyuubi/issues/7309#issuecomment-3778011936
Judging from the call stack you provided, the `main-SendThread` seems to be
missing. This may prevent the `packet` from `ClientCnxn.submitRequest` from
being processed, ultimately resulting in a stuck wait state.
Is there thread-level OOM?
```java
main-SendThread
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
at
org.apache.kyuubi.shaded.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:349)
at
org.apache.kyuubi.shaded.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1141)
```
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