influxdata/influxdb · error

not implemented

Error message

not implemented

What it means

A `not implemented` sentinel raised in the snapshot DataType conversion (From<&ArrowDataType> for DataType in snapshot/versions/v1.rs) when an Arrow data type has no mapping into the snapshot schema representation — a placeholder for unsupported/exotic Arrow types, not a runtime data problem.

Solutions

1. Identify the Arrow type that reached the unmapped match arm
2. Add a mapping or explicitly reject that type at ingestion
3. Avoid serializing columns of unsupported Arrow types into v1 snapshots

When it happens

Trigger: Thrown at influxdb3_catalog/src/snapshot/versions/v1.rs:257 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of influxdata/influxdb@06200ef96b (2026-09-19). Data as JSON: /api/errors/20498ec6f0855362. Report an issue: GitHub.

Appendix: source

Thrown at influxdb3_catalog/src/snapshot/versions/v1.rs:257

impl From<&ArrowDataType> for DataType {
    fn from(arrow_type: &ArrowDataType) -> Self {
        match arrow_type {
            ArrowDataType::Null => Self::Null,
            ArrowDataType::Boolean => Self::Bool,
            ArrowDataType::Int8 => Self::I8,
            ArrowDataType::Int16 => Self::I16,
            ArrowDataType::Int32 => Self::I32,
            ArrowDataType::Int64 => Self::I64,
            ArrowDataType::UInt8 => Self::U8,
            ArrowDataType::UInt16 => Self::U16,
            ArrowDataType::UInt32 => Self::U32,
            ArrowDataType::UInt64 => Self::U64,
            ArrowDataType::Float16 => Self::F16,
            ArrowDataType::Float32 => Self::F32,
            ArrowDataType::Float64 => Self::F64,
            ArrowDataType::Timestamp(unit, tz) => Self::Time((*unit).into(), tz.clone()),
            ArrowDataType::Date32 => unimplemented!(),
            ArrowDataType::Date64 => unimplemented!(),
            ArrowDataType::Time32(_) => unimplemented!(),
            ArrowDataType::Time64(_) => unimplemented!(),
            ArrowDataType::Duration(_) => unimplemented!(),
            ArrowDataType::Interval(_) => unimplemented!(),
            ArrowDataType::Binary => Self::Bin,
            ArrowDataType::FixedSizeBinary(_) => unimplemented!(),
            ArrowDataType::LargeBinary => Self::BigBin,
            ArrowDataType::BinaryView => Self::BinView,
            ArrowDataType::Utf8 => Self::Str,
            ArrowDataType::LargeUtf8 => Self::BigStr,
            ArrowDataType::Utf8View => Self::StrView,
            ArrowDataType::List(_) => unimplemented!(),
            ArrowDataType::ListView(_) => unimplemented!(),
            ArrowDataType::FixedSizeList(_, _) => unimplemented!(),
            ArrowDataType::LargeList(_) => unimplemented!(),
            ArrowDataType::LargeListView(_) => unimplemented!(),
            ArrowDataType::Struct(_) => unimplemented!(),

View on GitHub (pinned to 06200ef96b)