dosubot[bot] commented on issue #2667:
URL:
https://github.com/apache/incubator-hugegraph/issues/2667#issuecomment-2380669832
<!-- Answer -->
If you set `server.role=computer`, the system will still check if
`serverinfo` exists. The `heartbeat` method in the `ServerInfoManager` class
explicitly checks for the existence of `serverinfo` regardless of the server
role:
```java
public synchronized void heartbeat() {
assert this.graphIsReady();
HugeServerInfo serverInfo = this.selfServerInfo();
if (serverInfo != null) {
// Update heartbeat time for this server
serverInfo.updateTime(DateUtil.now());
this.save(serverInfo);
return;
}
/* ServerInfo is missing */
if (this.selfNodeId() == null) {
// Ignore if ServerInfo is not initialized
LOG.info("ServerInfo is missing: {}, may not be initialized yet");
return;
}
if (this.selfIsMaster()) {
// On master node, just wait for ServerInfo re-init
LOG.warn("ServerInfo is missing: {}, may be cleared before",
this.selfNodeId());
return;
}
/*
* Missing server info on non-master node, may be caused by graph
* truncated on master node then synced by raft.
* TODO: we just patch it here currently, to be improved.
*/
serverInfo = this.saveServerInfo(this.selfNodeId(), this.selfNodeRole());
assert serverInfo != null;
}
```
This method checks if `serverInfo` is `null` and handles the situation
accordingly, indicating that the existence of `serverinfo` is always checked
<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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