Vladimir Kotal

There is related old PR #1957 that I believe has some relevant bits to this.

Thanks for the report ! While OpenGrok is currently on Java 11 (and the switch to Java 17 is considered - #3899), it definitely would not hurt to address these....

> @vladak Hi, I can take a look if that's fine? Sure, all issues are generally open to public :-)

wow, that's one of the pretty rare screenshots from src.opensolaris.org days.

`fetchHistoryWhenNotInCache` property in `Configuration` should probably be eliminated with this change.

One can sort of workaround this with the [Messages API](https://opengrok.docs.apiary.io/#reference/0/messages/adds-message-to-a-system), however this is not permanent.

great, feel free to submit pull request.

If I am not mistaken the readers are created in searchMultiDatabase() in this loop: ``` 203 for (Project project : root) { 204 IndexReader ireader = (DirectoryReader.open(FSDirectory.open(new File(droot, project.getPath()).toPath()))); 205...

The 2nd string contains `curl` invocation: https://github.com/oracle/opengrok/blob/f8a4c2e475375863601d926c62ef78274359a438/opengrok-indexer/src/test/java/org/opengrok/indexer/configuration/ConfigurationTest.java#L201

I have seen this on Linux build as well.