dosubot[bot] commented on issue #2667:
URL:
https://github.com/apache/incubator-hugegraph/issues/2667#issuecomment-2380587752
<!-- Answer -->
To ensure `removeSelfServerInfo` is executed when the server is killed
suddenly, you should handle the server shutdown gracefully by ensuring that the
`close` method is called. The `close` method in `ServerInfoManager` already
calls `removeSelfServerInfo` if the `dbExecutor` is not shut down.
Here is the relevant part of the `close` method:
```java
public synchronized boolean close() {
this.closed = true;
if (!this.dbExecutor.isShutdown()) {
this.removeSelfServerInfo();
this.call(() -> {
try {
this.tx().close();
} catch (ConnectionException ignored) {
// ConnectionException means no connection established
}
this.graph.closeTx();
return null;
});
}
return true;
}
```
To handle sudden server termination, you can use a shutdown hook in your
application to ensure that the `close` method is called:
```java
Runtime.getRuntime().addShutdownHook(new Thread(() -> {
try {
serverInfoManager.close();
} catch (Exception e) {
e.printStackTrace();
}
}));
```
This shutdown hook will be executed when the JVM is shutting down, ensuring
that `removeSelfServerInfo` is called to remove the ServerInfo
<sup>[[1]](https://github.com/apache/incubator-hugegraph/blob/master/hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/task/ServerInfoManager.java)</sup>.
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