Pinpoint: How to solve problem: API-METADATA-NOT-FOUND?

[fengnex]

After cleaning all hbase tables and recreating all tables and restarting web&collector, every seems OK, but later the error 'API-METADATA-NOT-FOUND' has been found.
So how to fix it? Restarting everything or better solution?

Please notify us how to solve it ASAP, thx!

[fengnex]

Is it necessary to restart ALL agents if there are hundreds of them?
Are there any other solutions?

[Xylus]

Hi @fengnex
Meta data (APIs, SQLs, String values etc) are usually sent when a class is first transformed (API), or when a value is first traced (SQL, Strings), and these values are valid until the agent shuts down.
So if these data are deleted while the agent is still running, there is currently no way to retrieve them and the only solution is to restart the agents.

I've also just added a section in the FAQ page if you'd like to take a look.

[fengnex]

@Xylus
Thank you very much!

[yanpeng-ali]

@Xylus
I have found the same problem. And I change the pinpoint agent's source code to add a timer to synchronize the metadata.

Do you think it is fine? Thank you very much.

[Xylus]

@yanpeng-ali
Yes, I think that is totally fine!

[yanpeng-ali]

@Xylus

So, I make a pull request to merge the metadata syn's source code, It is fine?

[Xylus]

@yanpeng-ali
Ah, I thought you implemented it for your internal use and wasn't expecting a pull request.

One of the reasons why we held off on implementing something like this was because the memory footprint behind holding on to the metadata could be huge.
I'm sure it'll be fine for your use case, but I don't think keeping all metadata in memory is something we can merge into the code base.

[yanpeng-ali]

@Xylus
Thank you very much. I got it.

[stale[bot]]

This issue/proposal has been automatically marked as stale because it hasn't had any recent activity. It will automatically be closed if no further activity occurs for 20days. If you think this should still be open, or the problem still persists, just pop a reply in the comments and one of the maintainers will (try!) to follow up. Thank you for your interest and contribution to the Pinpoint Community.

[MarsZhu]

@yanpeng-ali
Thank you very much. I got it.
I need your Features.Cloud you teach me to implement it?

[dinesh4747]

Reference to the recent issue - #6496

@koo-taejin @jaehong-kim @emeroad @Xylus @jefry86 @yanpeng-ali @MarsZhu @minwoo-jung

It looks functional issue where "synchronizing the start time value of agent is not in sync whole it reaches collector server" Can someone please shed some light or definite pointers on how to solve API-METADATA-NOT-FOUND issue which is almost deteriorating my usage of pinpoint in my cloud system and it seems like @jefry86 mentioned very clearly that "the startTime value of metadata is different"

It would be really great and kind if someone could help me address this.