Re: lsp-java JDT keeps crashing, suspect too many projects in workspace src

>>>>> Steinar Bang <[email protected]>:

> I have started a discussion for this problem, on the lsp-mode github forum
>  https://github.com/emacs-lsp/lsp-mode/discussions/5049

> Perhaps a more appropriate forum?

I've answered my own posting here with some fresh experiments:
 https://github.com/emacs-lsp/lsp-mode/discussions/5049#discussioncomment-16917293

What I did today:
 1. Stopped all emacs instances
 2. Added the following to my ~/.emacs (I want JDTLS for maven multi
    module java projects and I use already use projectile, not sure how
    much effect excluding the eclipse directories and files have, but
    they weren't already in the list, so... every little helps...):
     ;; Add some eclipse generated files and directories to lsp-mode's list of ignored files
     (with-eval-after-load 'lsp-mode
       (add-to-list 'lsp-file-watch-ignored-directories "[/\\\\]\\.project$")
       (add-to-list 'lsp-file-watch-ignored-directories "[/\\\\]\\.classpath$")
       (add-to-list 'lsp-file-watch-ignored-directories "[/\\\\]\\.settings$"))

     ;; Adapt lsp-mode to the projects I want lsp-mode for (i.e. maven java projects (most are multi-module maven projects) all handled by projectile)
     (setopt lsp-auto-guess-root t ; use projectile to guess project roots
             lsp-java-import-maven-enabled t ; same as default, but left in to make clear we're dealing with maven projects
             lsp-java-configuration-maven-user-settings nil) ; also same as default, left in for the same reason
 3. Deleted the existing JDTLS
     rm -rf ~/.emacs.d/.cache/lsp/eclipse.jdt.ls/
 4. Started a fresh emacs and tried installing JDTLS with M-x lsp-install-server but JDTLS install didn't happen, ~/.emacs.d/.cache/lsp/stayed empty
 5. Googled a little and what I found made me delete ~/.emacs.d/.lsp-session-v1
 6. After deletion of .lsp-session-v1 JDTLS installation continued on its own without needing any intervention from me

I'm now back up with a fresh emacs and a fresh config and a fresh JDTLS,
and things seems to be working. At least JDTLS isn't crashing for me all
the time now, with just a single eclipse workspace imported.

Time will show how JDTLS and lsp-mode handles getting more eclipse
workspaces in the list (most of my projects are maven multi module java
projects, where the top pom directory also serves as an eclipse
workspace).