microsoft / microsoft/azure-tools-for-java

[IntelliJ] Uncaught Exception Exception thrown by subscriber method onEvent(com.microsoft.azure.toolkit.lib.common.event.AzureEvent) on subscriber com.microsoft.azure.toolkit.lib.common.event.AzureEventBus$EventListener@139910a2 when dispatching event: com

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Dominant language
Java
Stars
262
Forks
185
Avg merge
2d 21h
Merged PRs (30d)
1

Description

IntelliJ build version: 2025.3.2 IU-253.30387.90
OS: Windows 11
JDK: JetBrains s.r.o. 21.0.9
Plugin version: 3.97.2-2025.3
Additional Info: None
Parent component:

com.intellij.openapi.wm.impl.IdeRootPane[,8,8,2560x1392,layout=com.intellij.openapi.wm.impl.IdeRootPane$CustomHeaderRootLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=449,maximumSize=,minimumSize=,preferredSize=]

Error message:

IdeaLoggingEvent[message=Exception thrown by subscriber method onEvent(com.microsoft.azure.toolkit.lib.common.event.AzureEvent) on subscriber com.microsoft.azure.toolkit.lib.common.event.AzureEventBus$EventListener@139910a2 when dispatching event: com.microsoft.azure.toolkit.lib.common.event.AzureEventBus$SimpleEvent@1b072be4, throwable=java.util.ConcurrentModificationException
	at <REDACTED: user-file-path>$LinkedHashIterator.nextNode(LinkedHashMap.java:1023)
	at com.microsoft.azure.toolkit.lib.common.model.AbstractAzResourceModule.list(AbstractAzResourceModule.java:146)
	at com.microsoft.azure.toolkit.lib.common.model.AbstractAzService.list(AbstractAzService.java:50

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with AbstractAzResourceModule.list at line 146 and AbstractAzService.list at line 50, the locations named in the stack trace. Reproduce the IntelliJ event dispatch that triggers the ConcurrentModificationException, then verify that the AzureEvent subscriber completes without that exception.

Written by the indexing model from the issue text.

Assessment

Tech stack
azure, java
Domain
devtools
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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