pathwaycom/pathway · error · ValueError

'persistent_id' and 'name' should not be used together. Plea

Error message

'persistent_id' and 'name' should not be used together. Please use 'name' only.

What it means

Error "'persistent_id' and 'name' should not be used together. Please use 'name' only." thrown in pathwaycom/pathway.

Source

Thrown at python/pathway/io/_utils.py:704

            raise ValueError(
                "start_from_timestamp_ms must be a non-negative number of"
                f" milliseconds since the UNIX epoch; got {start_from_timestamp_ms}"
            )
        return start_from_timestamp_ms
    if start_from_timestamp_ms is not None:
        raise ValueError(
            f"start_from_timestamp_ms must not be set when start_from='{start_from}'"
        )
    return -1 if start_from == "end" else None


def _get_unique_name(
    name: str | None, kwargs: dict[str, Any], stacklevel: int = 6
) -> str:
    deprecated_name = kwargs.get("persistent_id")
    if name is not None:
        if deprecated_name is not None:
            raise ValueError(
                "'persistent_id' and 'name' should not be used together. Please use 'name' only."
            )
        return name
    if deprecated_name is not None:
        warnings.warn(
            "'persistent_id' is deprecated. Please use 'name' instead.",
            DeprecationWarning,
            stacklevel=stacklevel,
        )
    return deprecated_name


def _prepare_s3_connection_settings(
    s3_connection_settings: (
        AwsS3Settings | MinIOSettings | WasabiS3Settings | DigitalOceanS3Settings | None
    ),
) -> AwsS3Settings | None:
    if isinstance(s3_connection_settings, AwsS3Settings):

View on GitHub (pinned to fa2f74a464)

Solutions

1. Use only the 'name' parameter and drop 'persistent_id'.

Example fix

pw.io.fs.read(path, name='my_source')

When it happens

Trigger: Thrown at python/pathway/io/_utils.py:704 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of pathwaycom/pathway@fa2f74a464 (2026-08-15). Data as JSON: /api/errors/483e556624f26d8a. Report an issue: GitHub.