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Duplicated formatters #4492

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Closed
Duplicated formatters#4492
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bug

Description

@gian1200
gian1200
opened on Aug 28, 2026

Describe the bug

It shows 2 formatters (duplicated)

To Reproduce
Steps to reproduce the behavior:

  1. Format a java file without having a default formatter selected

Expected behavior
Only 1 formatter (or 2 with different name)

Screenshots

Image Image

Environment

  • Operating System: Windows 11
  • JDK version: 21 and 25 (Adoptium).
  • java --version: openjdk 25.0.4 2026-07-21 LTS
  • Visual Studio Code version: Version: 1.135.0 (user setup)
  • Java extension version: 1.55.0

Additional Information

Activity

  1. gian1200
    added
    bug
    on Aug 28, 2026

  2. datho7561 commented on Aug 28, 2026

    @datho7561
    datho7561
    on Aug 28, 2026
    Contributor

    I can't replicate this on Linux.

  3. wenytang-ms commented on Sep 4, 2026

    @wenytang-ms
    wenytang-ms
    on Sep 4, 2026
    Contributor

    I was able to reproduce the duplicated formatter entries on Windows 11 with VS Code 1.135.0 and Language Support for Java 1.55.0, while the Java project was still being opened.

    With the same Java extension version on VS Code 1.136.1, I could no longer reproduce the issue. Could you please update VS Code to the latest version and confirm whether the duplicated entries still appear?

  4. CledsonVilanculo commented on Sep 7, 2026

    @CledsonVilanculo
    CledsonVilanculo
    on Sep 7, 2026

    something like that was happening to me, duplicated error / warning reports, duplicated suggestions and two duplicate processes called "Open JDK Plantaform Binary" on task manager. Try going back to version 1.55 of the extension, it worked for me

  5. gian1200 commented on Sep 7, 2026

    @gian1200
    gian1200
    on Sep 7, 2026
    Author

    Could you please update VS Code to the latest version and confirm whether the duplicated entries still appear?

    I usually have latest versions. My current env is:

    • VSCode version: 1.136.1 (user setup)
    • Java extension version: 1.56.0 (updated last week)

    I no longer see the error (it only happened to me the day I reported it). However, I'm not sure if its a VSCode (regression) issue, or something intermittent (race condition/timeout issue). In my case, I usually work with multi-root workspaces (the one with java have 14 projects).

    PS: I was also migrating from java 21 to java 25. At that time, I had projects running both (not sure if this is relevant). I currently have everything migrated to Java 25

    Given that I no longer see the issue (not able to replicate), if you want I can close the issue.

  6. CledsonVilanculo commented on Sep 8, 2026

    @CledsonVilanculo
    CledsonVilanculo
    on Sep 8, 2026

    yeah sure, you can close

  7. datho7561
    closed this as completedon Sep 8, 2026

  8. gian1200 commented on Sep 8, 2026

    @gian1200
    gian1200
    on Sep 8, 2026
    Author

    Interestingly enough, I got the same behaviour today.

    A few things I noticed:

    • There seems to be a new VSCode update (I got the update button on the top (title bar)

    • I'm seeing an OOM notification

      Image

    • This happened when trying to format a .java code before taking any action on the OOM notification

    Maybe it tried to load/recover again without realizing that there were already some things configured?

  9. CledsonVilanculo commented on Sep 8, 2026

    @CledsonVilanculo
    CledsonVilanculo
    on Sep 8, 2026

    That OOM notification was showing up for me too, check if there are no duplicated error / warning reports

  10. gian1200 commented on Sep 8, 2026

    @gian1200
    gian1200
    on Sep 8, 2026
    Author

    No duplicate (that I remember). However, after pressing "increase Memory" and update vscode (pressing the update button), the duplicate formatters are still present.

    I currently see the following in the logs:

    Language support for Java

    2026-09-08 14:42:31.648 [error] set. 08, 2026 2:42:31 P. M. org.apache.aries.spifly.BaseActivator log []
2026-09-08 14:42:31.648 [error] INFO: Registered provider ch.qos.logback.classic.spi.LogbackServiceProvider of service org.slf4j.spi.SLF4JServiceProvider in bundle ch.qos.logback.classic []
2026-09-08 14:42:49.127 [error] set. 08, 2026 2:42:49 P. M. org.apache.aries.spifly.BaseActivator log []
2026-09-08 14:42:49.127 [error] INFO: Registered provider ch.qos.logback.classic.spi.LogbackServiceProvider of service org.slf4j.spi.SLF4JServiceProvider in bundle ch.qos.logback.classic []
2026-09-08 14:43:19.673 [error] 8 set. 2026 14:43:19 org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Unhandled method workspace/executeClientCommand
java.util.concurrent.CompletionException: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Unhandled method workspace/executeClientCommand
	at java.base/java.util.concurrent.CompletableFuture.reportJoin(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture.join(Unknown Source)
	at org.eclipse.jdt.ls.core.internal.JavaClientConnection.executeClientCommand(JavaClientConnection.java:89)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.synchronizeBundles(JDTLanguageServer.java:464)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer$2.run(JDTLanguageServer.java:324)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Unhandled method workspace/executeClientCommand
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleResponse(RemoteEndpoint.java:214)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:198)
	at org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.lambda$1(ParentProcessWatcher.java:86)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:189)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:97)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:97)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)
 []
2026-09-08 14:43:46.691 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.inlayhint.JavaASTInlayHintRegistry loadExtensionJavaASTInlayHints []
2026-09-08 14:43:46.691 [error] INFO: ->- Loading .javaASTInlayHints extension point ->- []
2026-09-08 14:43:46.691 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.inlayhint.JavaASTInlayHintRegistry addExtensionJavaASTInlayHints []
2026-09-08 14:43:46.691 [error] INFO:   Loaded javaASTInlayHints: org.eclipse.lsp4mp.jdt.core []
2026-09-08 14:43:46.691 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.inlayhint.JavaASTInlayHintRegistry loadExtensionJavaASTInlayHints []
2026-09-08 14:43:46.695 [error] INFO: -<- Done loading .javaASTInlayHints extension point -<- []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry loadExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO: ->- Loading .javaASTValidators extension point ->- []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: com.redhat.microprofile.jdt.quarkus []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: com.redhat.microprofile.jdt.quarkus []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: com.redhat.microprofile.jdt.quarkus []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO:   Loaded javaASTValidators: com.redhat.microprofile.jdt.quarkus []
2026-09-08 14:43:46.756 [error] set. 08, 2026 2:43:46 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry loadExtensionJavaASTValidators []
2026-09-08 14:43:46.756 [error] INFO: -<- Done loading .javaASTValidators extension point -<- []
2026-09-08 16:24:51.088 [error] set. 08, 2026 4:24:51 P. M. org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation []
2026-09-08 16:24:51.088 [error] WARNING: Unmatched cancel notification for request id 152 []
2026-09-08 16:24:53.912 [error] set. 08, 2026 4:24:53 P. M. org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation []
2026-09-08 16:24:53.912 [error] WARNING: Unmatched cancel notification for request id 155 []
2026-09-08 16:24:54.260 [error] set. 08, 2026 4:24:54 P. M. org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation []
2026-09-08 16:24:54.260 [error] WARNING: Unmatched cancel notification for request id 157 []
2026-09-08 16:24:55.407 [error] set. 08, 2026 4:24:55 P. M. org.eclipse.lsp4j.jsonrpc.RemoteEndpoint handleCancellation []
2026-09-08 16:24:55.407 [error] WARNING: Unmatched cancel notification for request id 161 []

    Language support for Java (syntax)

    2026-09-08 14:43:29.182 [error] Stopping server timed out []
2026-09-08 14:43:31.582 [info] Server process exited successfully []

  11. CledsonVilanculo commented on Sep 8, 2026

    @CledsonVilanculo
    CledsonVilanculo
    on Sep 8, 2026

    yeah i suggest you to not click that button to increase memory, if you want to, you can configure the memory limit in .vscode/setting.json

  12. gian1200 commented on Sep 9, 2026

    @gian1200
    gian1200
    on Sep 9, 2026
    Author

    i suggest you to not click that button to increase memory

    I haven have any issue with it in the last years.

    Current workspace settings (fragment):

    "settings": {
		"java.configuration.updateBuildConfiguration": "automatic",
		"java.jdt.ls.vmargs": "-XX:+UseG1GC -XX:GCTimeRatio=4 -XX:AdaptiveSizePolicyWeight=90 -Dsun.zip.disableMemoryMapping=true -Xmx8G -Xms512m -XX:+UseStringDeduplication",
		"maven.view": "hierarchical",
		"java.compile.nullAnalysis.mode": "disabled"
	}

    I just restarted Windows, updated + restarted VSCode and Clean Java Language Sserver workspace (just in case), and I'm having the same issue (duplicate formatters registred. The logs ar similar as yesterday.

    1. Is it OK to see 2 registrations during VSCode startup?
    2. Is it expected to see ResponseErrorException: Unhandled method workspace/executeClientCommand?

    Log:

    2026-09-09 12:18:16.170 [error] set. 09, 2026 12:18:15 P. M. org.apache.aries.spifly.BaseActivator log []
2026-09-09 12:18:16.171 [error] INFO: Registered provider ch.qos.logback.classic.spi.LogbackServiceProvider of service org.slf4j.spi.SLF4JServiceProvider in bundle ch.qos.logback.classic []
2026-09-09 12:18:45.519 [error] set. 09, 2026 12:18:45 P. M. org.apache.aries.spifly.BaseActivator log []
2026-09-09 12:18:45.520 [error] INFO: Registered provider ch.qos.logback.classic.spi.LogbackServiceProvider of service org.slf4j.spi.SLF4JServiceProvider in bundle ch.qos.logback.classic []
2026-09-09 12:19:08.701 [error] 9 set. 2026 12:19:08 org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Unhandled method workspace/executeClientCommand
java.util.concurrent.CompletionException: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Unhandled method workspace/executeClientCommand
	at java.base/java.util.concurrent.CompletableFuture.reportJoin(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture.join(Unknown Source)
	at org.eclipse.jdt.ls.core.internal.JavaClientConnection.executeClientCommand(JavaClientConnection.java:89)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer.synchronizeBundles(JDTLanguageServer.java:464)
	at org.eclipse.jdt.ls.core.internal.handlers.JDTLanguageServer$2.run(JDTLanguageServer.java:324)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)
Caused by: org.eclipse.lsp4j.jsonrpc.ResponseErrorException: Unhandled method workspace/executeClientCommand
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.handleResponse(RemoteEndpoint.java:214)
	at org.eclipse.lsp4j.jsonrpc.RemoteEndpoint.consume(RemoteEndpoint.java:198)
	at org.eclipse.jdt.ls.core.internal.ParentProcessWatcher.lambda$1(ParentProcessWatcher.java:86)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.handleMessage(StreamMessageProducer.java:189)
	at org.eclipse.lsp4j.jsonrpc.json.StreamMessageProducer.listen(StreamMessageProducer.java:97)
	at org.eclipse.lsp4j.jsonrpc.json.ConcurrentMessageProcessor.run(ConcurrentMessageProcessor.java:97)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)
 []
2026-09-09 12:20:54.141 [error] set. 09, 2026 12:20:53 P. M. com.microsoft.java.debug.plugin.internal.JavaDebuggerServerPlugin start []
2026-09-09 12:20:54.142 [error] INFO: Starting com.microsoft.java.debug.plugin []
2026-09-09 12:21:36.728 [error] set. 09, 2026 12:21:36 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.inlayhint.JavaASTInlayHintRegistry loadExtensionJavaASTInlayHints []
2026-09-09 12:21:36.728 [error] INFO: ->- Loading .javaASTInlayHints extension point ->- []
2026-09-09 12:21:36.729 [error] set. 09, 2026 12:21:36 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.inlayhint.JavaASTInlayHintRegistry addExtensionJavaASTInlayHints []
2026-09-09 12:21:36.731 [error] INFO:   Loaded javaASTInlayHints: org.eclipse.lsp4mp.jdt.core []
2026-09-09 12:21:36.731 [error] set. 09, 2026 12:21:36 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.inlayhint.JavaASTInlayHintRegistry loadExtensionJavaASTInlayHints []
2026-09-09 12:21:36.732 [error] INFO: -<- Done loading .javaASTInlayHints extension point -<- []
2026-09-09 12:21:37.148 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.AbstractMicroProfileProviderRegistry loadExtensionProviders []
2026-09-09 12:21:37.148 [error] INFO: ->- Loading .configSourceProviders extension point ->- []
2026-09-09 12:21:37.212 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.AbstractMicroProfileProviderRegistry addExtensionProviders []
2026-09-09 12:21:37.217 [error] INFO:   Loaded configSourceProviders: org.eclipse.lsp4mp.jdt.internal.core.providers.MicroProfileConfigSourceProvider []
2026-09-09 12:21:37.225 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.AbstractMicroProfileProviderRegistry addExtensionProviders []
2026-09-09 12:21:37.226 [error] INFO:   Loaded configSourceProviders: com.redhat.microprofile.jdt.internal.quarkus.providers.QuarkusConfigSourceProvider []
2026-09-09 12:21:37.227 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.AbstractMicroProfileProviderRegistry loadExtensionProviders []
2026-09-09 12:21:37.230 [error] INFO: -<- Done loading .configSourceProviders extension point -<- []
2026-09-09 12:21:37.914 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry loadExtensionJavaASTValidators []
2026-09-09 12:21:37.915 [error] INFO: ->- Loading .javaASTValidators extension point ->- []
2026-09-09 12:21:37.919 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.920 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-09 12:21:37.920 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.920 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-09 12:21:37.928 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.930 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-09 12:21:37.931 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.931 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-09 12:21:37.931 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.931 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-09 12:21:37.931 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.932 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-09 12:21:37.932 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.932 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-09 12:21:37.932 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.932 [error] INFO:   Loaded javaASTValidators: org.eclipse.lsp4mp.jdt.core []
2026-09-09 12:21:37.932 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.932 [error] INFO:   Loaded javaASTValidators: com.redhat.microprofile.jdt.quarkus []
2026-09-09 12:21:37.933 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.933 [error] INFO:   Loaded javaASTValidators: com.redhat.microprofile.jdt.quarkus []
2026-09-09 12:21:37.933 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.935 [error] INFO:   Loaded javaASTValidators: com.redhat.microprofile.jdt.quarkus []
2026-09-09 12:21:37.936 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry addExtensionJavaASTValidators []
2026-09-09 12:21:37.936 [error] INFO:   Loaded javaASTValidators: com.redhat.microprofile.jdt.quarkus []
2026-09-09 12:21:37.936 [error] set. 09, 2026 12:21:37 P. M. org.eclipse.lsp4mp.jdt.internal.core.java.validators.JavaASTValidatorRegistry loadExtensionJavaASTValidators []
2026-09-09 12:21:37.937 [error] INFO: -<- Done loading .javaASTValidators extension point -<- []

  13. gian1200 commented on Oct 15, 2026

    @gian1200
    gian1200
    on Oct 15, 2026
    Author

    That OOM notification was showing up for me too, check if there are no duplicated error / warning reports

    After playing with it fow a while, I think I now understand your comment. Formatters are not the only thing duplicated. Everything seems to be duplicated after an OOM; followed by a "self-healing" (autorestart) of the extension. When this happens, everything that is registered by the extension during startup is being registered again or executed twice.

    Examples:

    • Parameter name:
      Image

    • Autocomplete options:

      Image

    • Formatters:

      Image

    Should I create a new issue? Root cause might be related to #4505, but the reported issue is different there.

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