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…alizer (#23600) When serializing Java arrays, JacksonSerializer was using ArrayNode.set(i, value) on a newly created ArrayNode. In Jackson, set() expects an existing element at the given index, leading to an IndexOutOfBoundsException for new arrays. This change switches to ArrayNode.add(value) to correctly populate the array. Additionally, support for deserializing JSON arrays back into Java arrays was added to ensure symmetry in JacksonSerializer. Fixes #23583
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caalador
approved these changes
Feb 23, 2026
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When serializing Java arrays, JacksonSerializer was using ArrayNode.set(i, value) on a newly created ArrayNode. In Jackson, set() expects an existing element at the given index, leading to an IndexOutOfBoundsException for new arrays.
This change switches to ArrayNode.add(value) to correctly populate the array. Additionally, support for deserializing JSON arrays back into Java arrays was added to ensure symmetry in JacksonSerializer.
Fixes #23583