microsoft / microsoft/azure-tools-for-java
[IntelliJ] Uncaught Exception Operator called default onErrorDropped reactor.core.Exceptions$ErrorCallbackNotImplemented: java.util.concurrent.TimeoutException: Did not observe any item or terminal signal within 10000ms in 'subscribeOnCallable' (and no fal
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Description
IntelliJ build version: 2025.2.2 IC-252.26199.169
OS: Windows 11
JDK: JetBrains s.r.o. 21.0.8
Plugin version: 3.97.1-2025.2
Additional Info: None
Parent component:
com.intellij.openapi.wm.impl.IdeRootPane[,7,0,1276x675,invalid,layout=com.intellij.openapi.wm.impl.IdeRootPane$CustomHeaderRootLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=449,maximumSize=,minimumSize=,preferredSize=]
Error message:
IdeaLoggingEvent[message=Operator called default onErrorDropped, throwable=reactor.core.Exceptions$ErrorCallbackNotImplemented: java.util.concurrent.TimeoutException: Did not observe any item or terminal signal within 10000ms in 'subscribeOnCallable' (and no fallback has been configured)
Caused by: java.util.concurrent.TimeoutException: Did not observe any item or terminal signal within 10000ms in 'subscribeOnCallable' (and no fallback has been configured)
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First steps
- Read the whole issue, then the project's contributing guide.
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Research direction
No source file or test is named. Reproduce with IntelliJ 2025.2.2, plugin 3.97.1-2025.2, and Windows 11, then trace the Reactor timeout from subscribeOnCallable. Done means the cause of the uncaught onErrorDropped report and a verified fix path are identified.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- devtools
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100