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https://issues.apache.org/jira/browse/CAMEL-23459?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrea Cosentino resolved CAMEL-23459.
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Resolution: Fixed
> camel-docling: Add TTL cleanup for pending async tasks to prevent memory leak
> -----------------------------------------------------------------------------
>
> Key: CAMEL-23459
> URL: https://issues.apache.org/jira/browse/CAMEL-23459
> Project: Camel
> Issue Type: Improvement
> Components: camel-docling
> Reporter: Andrea Cosentino
> Assignee: Andrea Cosentino
> Priority: Major
> Fix For: 4.21.0
>
>
> {{DoclingComponent}} tracks pending async-conversion task ids in an in-memory
> {{ConcurrentHashMap}} that is shared across all producer instances. Entries
> are added when {{SUBMIT_ASYNC_CONVERSION}} returns and consumed when
> {{CHECK_CONVERSION_STATUS}} reports a terminal state. There is no expiration
> mechanism for entries that are never consumed (e.g., the route that submitted
> the task crashes, the user simply forgets, the docling-serve task never
> completes).
> h3. Risk
> A long-running Camel application that uses async conversions will accumulate
> entries in this map indefinitely, leaking memory.
> h3. Proposed change
> * Track a creation timestamp alongside each task id
> * Add a configurable TTL on {{DoclingComponent}} (e.g., {{asyncTaskTtl}} with
> a sensible default such as 24 hours)
> * Run a scheduled cleanup task that evicts entries older than the TTL
> * Optionally expose a metric for the current size of the map
> h3. Acceptance criteria
> * New {{asyncTaskTtl}} configuration option on {{DoclingComponent}},
> defaulting to a reasonable value
> * Background thread (using Camel's {{ScheduledExecutorService}}
> infrastructure) evicts expired entries
> * Eviction is logged at DEBUG with task id and age
> * Unit test verifies eviction after the configured TTL
> * {{docling-component.adoc}} documents the option and the rationale
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