Jiangzhou

[FEATURE] make target deletion (drop) tolerate failures

2

When we delete (drop) a target backend, sometimes it fails because the connection is no longer available. Currently this may block flow's setup process. We want to make target deletion...

[FEATURE] Refactor Error Handling: Replace `anyhow` with structured `thiserror` to support Host Exception Tunneling

5

# Context & Motivation Currently, our Core library relies on `anyhow` for error handling. While convenient, this causes a major issue when interfacing with the Python runtime (PyO3). **The Problem:**...

[FEATURE] support ChromaDB as a builtin target

6

Similar to [LanceDB](https://cocoindex.io/docs/targets/lancedb) support. Please make ChromaDB an optional dependency. --- ❤️ Contributors, please refer to 📙[Contributing Guide](https://cocoindex.io/docs/about/contributing). Unless the PR can be sent immediately (e.g. just a few lines...

[FEATURE] support `VectorIndexMethod` in LanceDB

7

See #1051 for more context --- ❤️ Contributors, please refer to 📙[Contributing Guide](https://cocoindex.io/docs/about/contributing). Unless the PR can be sent immediately (e.g. just a few lines of code), we recommend you...

[FEATURE] Support Python 3.14 free-threaded

5

We want to support Python 3.14 free-threaded build. See PyO3 guide [Supporting Free-Threaded CPython](https://pyo3.rs/main/free-threading.html#supporting-free-threaded-cpython) We need to enable version-specific wheels build (`cp314t`), before free-threaded have stable ABI support ([PEP 803](https://peps.python.org/pep-0803/))...

[FEATURE] support processing a single shard out of N for sources (for multiple workers and sampling)

2

Original thread: https://discord.com/channels/1314801574169673738/1443136035847405639 We want to support processing a single shard out of N for sources. Users can configure a shard number N and the current shard ID. CocoIndex divides...

[FEATURE] support `VectorIndexMethod` in qdrant

5

See #1051 for more context Please follow the following example - https://cocoindex.io/docs/examples/simple_vector_index Change it to Qdrant, And attach a screenshot with the PR if you have any question please let...

[REFACTOR] type annotation -> CocoIndex type encoding logic in Python SDK should return strong-typed schema class

9

# Some Background Regarding data types / schemas, there're multiple forms: 1. Python native type annotation, e.g. `int`, `dict[str, Any]`, a specific data class. They're directly used in users code...

[BUG] Gracefully handle SIGINT and propagate from Rust to Python

6

From users: > Calls to flow.Flow.update() and flow.Flow.setup() don't seem to handle SIGINT. So, could not gracefully terminate if any errors during long indexing runs. Perhaps it should return cancellation...