Pinecone migration sample migrates only one batch when using Pinecone namespace

[paulramsey]

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Environment details

• OS type and version: Debian 6.1.128-1 (2025-02-07) x86_64 GNU/Linux
• Python version: Python 3.11.2
• pip version: pip 25.0.1
• langchain-google-alloydb-pg version: 0.9.3

Steps to reproduce

1. Deploy GCE VM
2. Clone repo
3. Replace parameters to match environment
4. Run migrate_pinecone_vectorstore_to_alloydb.py
5. Result: Script migrates only one batch (10 rows by default) of vectors from Pinecone to AlloyDB

This is due to a missing namespace parameter in the inner loop of get_ids_batch().