Implementation Status¶
The following tables summarize the features available in the various official Arrow libraries. Unless otherwise stated, the Python, R, Ruby and C/GLib libraries follow the C++ Arrow library.
Data Types¶
Data type (primitive) |
C++ |
Java |
Go |
JavaScript |
C# |
Rust |
|---|---|---|---|---|---|---|
Null |
✓ |
✓ |
||||
Boolean |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Int8/16/32/64 |
✓ |
✓ |
✓ |
✓ |
✓ |
|
UInt8/16/32/64 |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Float16 |
✓ |
|||||
Float32/64 |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Decimal128 |
✓ |
✓ |
||||
Date32/64 |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Time32/64 |
✓ |
✓ |
✓ |
✓ |
||
Timestamp |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Duration |
✓ |
✓ |
✓ |
|||
Interval |
✓ |
✓ |
✓ |
|||
Fixed Size Binary |
✓ |
✓ |
✓ |
✓ |
||
Binary |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Large Binary |
✓ |
✓ |
✓ |
✓ |
||
Utf8 |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Large Utf8 |
✓ |
✓ |
✓ |
✓ |
Data type (nested) |
C++ |
Java |
Go |
JavaScript |
C# |
Rust |
|---|---|---|---|---|---|---|
Fixed Size List |
✓ |
✓ |
✓ |
✓ |
||
List |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Large List |
✓ |
✓ |
||||
Struct |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Map |
✓ |
✓ |
✓ |
|||
Dense Union |
✓ |
✓ |
||||
Sparse Union |
✓ |
✓ |
Data type (special) |
C++ |
Java |
Go |
JavaScript |
C# |
Rust |
|---|---|---|---|---|---|---|
Dictionary |
✓ |
✓ (1) |
✓ (1) |
|||
Extension |
✓ |
✓ |
Notes:
(1) Nested dictionaries not supported
See also
The Arrow Columnar Format specification.
IPC Format¶
IPC Feature |
C++ |
Java |
Go |
JavaScript |
C# |
Rust |
|---|---|---|---|---|---|---|
Arrow stream format |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Arrow file format |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Record batches |
✓ |
✓ |
✓ |
✓ |
✓ |
|
Dictionaries |
✓ |
✓ |
✓ |
✓ |
||
Replacement dictionaries |
✓ |
✓ |
||||
Delta dictionaries |
||||||
Tensors |
✓ |
|||||
Sparse tensors |
✓ |
|||||
Custom schema metadata |
✓ |
✓ |
Flight RPC¶
Flight RPC Feature |
C++ |
Java |
Go |
JavaScript |
C# |
Rust |
|---|---|---|---|---|---|---|
gRPC transport |
✓ |
✓ |
||||
gRPC + TLS transport |
✓ |
✓ |
||||
RPC error codes |
✓ |
✓ |
||||
Authentication handlers |
✓ |
✓ |
||||
Custom client middleware |
✓ |
✓ |
||||
Custom server middleware |
✓ |
✓ |
See also
The Arrow Flight RPC specification.
C Data Interface¶
Feature |
C++ |
Python |
R |
|---|---|---|---|
Schema export |
✓ |
✓ |
✓ |
Array export |
✓ |
✓ |
✓ |
Schema import |
✓ |
✓ |
✓ |
Array import |
✓ |
✓ |
✓ |
See also
The C Data Interface specification.
Third-Party Data Formats¶
Format |
C++ |
Java |
Go |
JavaScript |
C# |
Rust |
|---|---|---|---|---|---|---|
Avro |
R |
|||||
CSV |
R |
R/W |
R/W |
|||
ORC |
R |
|||||
Parquet |
R/W |
Notes:
R = Read supported
W = Write supported