m2e logs

[karlvr]

I have a Maven build process getting into an infinite loop state, where it's constantly building (I can see it repeatedly spawning processes that should be started once during the build). I would like to see the m2e log, like I did in Eclipse, to try to get a handle on what's going on, but I don't seem to be able to see any output from m2e. Am I missing something or is this something that we could add?

[rgrunber]

Regarding your main issue, it seems similar to #2360 .

For the logging question, have a look at eclipse-jdtls/eclipse.jdt.ls#1589 (comment) . Come to think of it we should probably add this to the Wiki if it isn't already.

Basically, adding jdt.ls.debug=true as a property to the java.jdt.ls.vmargs should enable DEBUG level logging at ${workspace}/.metadata/.out-jdt.ls-${timestamp}.log

eg. "java.jdt.ls.vmargs": "-XX:+UseParallelGC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx1G -Xms100m -Djdt.ls.debug=true"

For reference, the default configuration is https://github.com/eclipse/eclipse.jdt.ls/blob/master/org.eclipse.jdt.ls.core/logback.xml . There is the ability to provide a custom configuration as well, but I think just setting the property should do what you need.

[rgrunber]

Closing this out for now as the main issue should be fixed in our next release. There's also #2360 (comment) where we publish snapshot builds, and in the future we'll be publishing "insider" builds making it easier for consumers to try builds under development.

[karlvr]

@rgrunber firstly just a massive thank you for the tip about the regression. I don't know why we didn't think to downgrade; I assumed it was an issue we'd introduced in our code. Our small team thanks you. Meanwhile I'll follow up on the rest, and if you haven't already, I'll try adding your notes to the Wiki.

[karlvr]

@rgrunber what do you think about adding commands to this project to open the .out-jdt.ls... and .error-jdt.ls... log files? I'll tinker with it and produce a PR in case it's useful.