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fix: truncate oversized reranking passages instead of failing the request #2532

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fix: truncate oversized reranking passages instead of failing the request #2532

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9 changes: 6 additions & 3 deletions ...in/java/io/stargate/sgv2/jsonapi/service/reranking/operation/NvidiaRerankingProvider.java
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Expand Up @@ -64,13 +64,16 @@ public class NvidiaRerankingProvider extends RerankingProvider {
/**
* Nvidia Reranking Service supports truncation or error behavior when the passage is too long.
*
* <p>The Data API uses {@code NONE} as the default, which means the reranking request will error
* out if there is a query and passage pair that exceeds the allowed token size of 8192.
* <p>The Data API uses {@code END}, which truncates the end of any query and passage pair that
* exceeds the model's allowed token size (8192). With {@code NONE} a single oversized pair fails
* the whole reranking request (HTTP 400), and because batches are dispatched fail-fast, the
* entire findAndRerank command fails deterministically for any query whose candidate set contains
* one oversized document.
*
* <p>See:
* https://docs.nvidia.com/nim/nemo-retriever/text-reranking/latest/using-reranking.html#token-limits-truncation
*/
private static final String TRUNCATE_PASSAGE = "NONE";
private static final String TRUNCATE_PASSAGE = "END";

public NvidiaRerankingProvider(
RerankingProvidersConfig.RerankingProviderConfig.ModelConfig modelConfig) {
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