[Bug] Exception Debugger WARN: currentIdx=0 out of bounds of innerTrace array length=0 (v7.80.2)

[LucienLallier]

Tracer Version(s)

release-prod-6939

Java Version(s)

21.0.11

JVM Vendor

Amazon Corretto

Bug Report

Description:
Application pods running the dd-java-agent are frequently logging the following warning:

WARN com.datadog.debugger.exception.AbstractExceptionDebugger - currentIdx=0 out of bounds of innerTrace array length=0

Observed Behavior:
The agent throws an IndexOutOfBoundsException internally within the Exception Debugger module when processing application exceptions. The innerTrace array has a length of 0, but the agent attempts to access index 0.

Mitigation:
Performing a rollout (kubectl rollout restart) on the impacted pods temporarily stops the warnings. This indicates the agent enters a corrupted internal state that is cleared upon JVM and agent restart.

Environment:

• dd-java-agent version: 1.63.0~864ef847c7
• Datadog Cluster Agent: 7.80.2
• Infrastructure: AWS EKS

Expected Behavior

Not having this error

Reproduction Code

No response

[jpbempel]

Hello @LucienLallier
I don't think the version of dd-java-agent is 1.44.0 because the class AbstractExceptionDebugger was introduced later, including the warn log.
anyway we will fix this warning for empty stacktraces

Thanks

[LucienLallier]

@jpbempel
My bad! Sorry/thanks.

# java -jar /dd-java-agent.jar
1.63.0~864ef847c7