Andrea Cosentino created CAMEL-24529:
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Summary: camel-djl: the loaded ZooModel is never closed
(native-memory leak on restart)
Key: CAMEL-24529
URL: https://issues.apache.org/jira/browse/CAMEL-24529
Project: Camel
Issue Type: Bug
Components: camel-ai
Reporter: Andrea Cosentino
Assignee: Andrea Cosentino
Fix For: 4.23.0
DJL zoo predictors load a ZooModel (ModelZoo.loadModel) in their constructor,
but DJLProducer has no doStop() and AbstractPredictor has no close(), so the
native ZooModel (NDManager/engine memory) is never released on route
stop/redeploy or CamelContext restart — a native-memory leak. The huggingface
sibling cleans up (AbstractTaskPredictor.close via HuggingFaceProducer.doStop).
The per-exchange Predictor objects are correctly try-with-resources; only the
model is leaked.
Fix: add close() to AbstractPredictor (closing the model), keep the predictor
reference in DJLProducer, and override DJLProducer.doStop() to close it.
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