Vladimir Kotal

Given that setting env var in Java is not a simple task, we might well defer this till Java 9 which looks like it will be finally systems friendly.

Another reason for using different serialization scheme for configuration (#2329).

Sounds like a bug. There is probably something in the `setConfiguration()` code path that acquires a lock used by the request processing. One way to avoid this is to use...

The configuration processing in the webapp might be held by invalidating repositories. Could you take a look at the webapp logs while the configuration upload is in progress to see...

It may be, and this is purely a speculation at this point, that at the time the configuration is sent to the webapp, there is already a sequence of suggester...

Could you take the stack trace snapshot using `jstack` on the Tomcat process when this issue occurs and there is a pending request to the webapp that is stuck ?...

There are similar issues - #3516 and #3468

I assume WPF stands for [Windows Presentation Foundation](https://en.wikipedia.org/wiki/Windows_Presentation_Foundation).

I think the biggest blocker is the amount of data - each file's history would have to be read in.

After the history cache serialization scheme was changed via PR #4268 so that partial deserialization is possible, similar thing was done in PR #4275. So, nothing prevents from adding the...