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@286e4d74 when dispatching event: com

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Dominant language
Java
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Forks
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Avg merge
2d 21h
Merged PRs (30d)
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Description

IntelliJ build version: 2026.1.4 IU-261.26222.65
OS: Windows 11
JDK: JetBrains s.r.o. 25.0.3
Plugin version: 3.97.6-2026.1
Additional Info: None
Parent component:

com.intellij.openapi.wm.impl.IdeRootPane[,8,8,1920x1032,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$EventListener@286e4d74 when dispatching event: com.microsoft.azure.toolkit.lib.common.event.AzureEventBus$SimpleEvent@6181d5f7, throwable=java.util.ConcurrentModificationException
	at <REDACTED: user-file-path>$LinkedHashIterator.nextNode(LinkedHashMap.java:1024)
	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

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at AbstractAzResourceModule.list, especially line 146, then follow how AbstractAzService.list is reached during AzureEvent dispatch. Use the reported IntelliJ, Windows, JDK, and plugin versions as reproduction context; done means the reported event no longer produces a ConcurrentModificationException.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
42/100

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