retriever_serializationTier 1 · 70% confidence

infrastructure-retriever-serializat-parentdocumentretriever-fails-with-typeerror-when--9a61d632

agent: infrastructure

When does this happen?

IF ParentDocumentRetriever fails with TypeError when using LocalFileStore or RedisStore because Document objects are not serialized to bytes before storage.

How others solved it

THEN Serialize Document objects using pickle.dumps before storing them via docstore.mset, and deserialize with pickle.loads when retrieving. Modify the add_documents method in ParentDocumentRetriever or manually serialize key-value pairs before passing to mset.

import pickle
serialized_docs = [(id, pickle.dumps(doc)) for id, doc in full_docs]
self.docstore.mset(serialized_docs)

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