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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_signed_integer.html">pyarrow.types.is_signed_integer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_unsigned_integer.html">pyarrow.types.is_unsigned_integer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_int8.html">pyarrow.types.is_int8</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_int16.html">pyarrow.types.is_int16</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_int32.html">pyarrow.types.is_int32</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_int64.html">pyarrow.types.is_int64</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_uint8.html">pyarrow.types.is_uint8</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_uint16.html">pyarrow.types.is_uint16</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_uint32.html">pyarrow.types.is_uint32</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_uint64.html">pyarrow.types.is_uint64</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_floating.html">pyarrow.types.is_floating</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_float16.html">pyarrow.types.is_float16</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_float32.html">pyarrow.types.is_float32</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_float64.html">pyarrow.types.is_float64</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_decimal.html">pyarrow.types.is_decimal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_decimal128.html">pyarrow.types.is_decimal128</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_decimal256.html">pyarrow.types.is_decimal256</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_list.html">pyarrow.types.is_list</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_large_list.html">pyarrow.types.is_large_list</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_fixed_size_list.html">pyarrow.types.is_fixed_size_list</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_list_view.html">pyarrow.types.is_list_view</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_large_list_view.html">pyarrow.types.is_large_list_view</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_struct.html">pyarrow.types.is_struct</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_union.html">pyarrow.types.is_union</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_nested.html">pyarrow.types.is_nested</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_run_end_encoded.html">pyarrow.types.is_run_end_encoded</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_temporal.html">pyarrow.types.is_temporal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_timestamp.html">pyarrow.types.is_timestamp</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_date.html">pyarrow.types.is_date</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_date32.html">pyarrow.types.is_date32</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_date64.html">pyarrow.types.is_date64</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_time.html">pyarrow.types.is_time</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_time32.html">pyarrow.types.is_time32</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_time64.html">pyarrow.types.is_time64</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_duration.html">pyarrow.types.is_duration</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_interval.html">pyarrow.types.is_interval</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_null.html">pyarrow.types.is_null</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_binary.html">pyarrow.types.is_binary</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_unicode.html">pyarrow.types.is_unicode</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_string.html">pyarrow.types.is_string</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_large_binary.html">pyarrow.types.is_large_binary</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_large_unicode.html">pyarrow.types.is_large_unicode</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_large_string.html">pyarrow.types.is_large_string</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_binary_view.html">pyarrow.types.is_binary_view</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_string_view.html">pyarrow.types.is_string_view</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_fixed_size_binary.html">pyarrow.types.is_fixed_size_binary</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_map.html">pyarrow.types.is_map</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_dictionary.html">pyarrow.types.is_dictionary</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.is_primitive.html">pyarrow.types.is_primitive</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.types.TypesEnum.html">pyarrow.types.TypesEnum</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/arrays.html">Arrays and Scalars</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.array.html">pyarrow.array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.nulls.html">pyarrow.nulls</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Array.html">pyarrow.Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BooleanArray.html">pyarrow.BooleanArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FloatingPointArray.html">pyarrow.FloatingPointArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.IntegerArray.html">pyarrow.IntegerArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int8Array.html">pyarrow.Int8Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int16Array.html">pyarrow.Int16Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int32Array.html">pyarrow.Int32Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int64Array.html">pyarrow.Int64Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.NullArray.html">pyarrow.NullArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.NumericArray.html">pyarrow.NumericArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt8Array.html">pyarrow.UInt8Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt16Array.html">pyarrow.UInt16Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt32Array.html">pyarrow.UInt32Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt64Array.html">pyarrow.UInt64Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.HalfFloatArray.html">pyarrow.HalfFloatArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FloatArray.html">pyarrow.FloatArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.DoubleArray.html">pyarrow.DoubleArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BinaryArray.html">pyarrow.BinaryArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.StringArray.html">pyarrow.StringArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedSizeBinaryArray.html">pyarrow.FixedSizeBinaryArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeBinaryArray.html">pyarrow.LargeBinaryArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeStringArray.html">pyarrow.LargeStringArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BinaryViewArray.html">pyarrow.BinaryViewArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.StringViewArray.html">pyarrow.StringViewArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Time32Array.html">pyarrow.Time32Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Time64Array.html">pyarrow.Time64Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Date32Array.html">pyarrow.Date32Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Date64Array.html">pyarrow.Date64Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.TimestampArray.html">pyarrow.TimestampArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.DurationArray.html">pyarrow.DurationArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.MonthDayNanoIntervalArray.html">pyarrow.MonthDayNanoIntervalArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal32Array.html">pyarrow.Decimal32Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal64Array.html">pyarrow.Decimal64Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal128Array.html">pyarrow.Decimal128Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal256Array.html">pyarrow.Decimal256Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.DictionaryArray.html">pyarrow.DictionaryArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ListArray.html">pyarrow.ListArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedSizeListArray.html">pyarrow.FixedSizeListArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeListArray.html">pyarrow.LargeListArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ListViewArray.html">pyarrow.ListViewArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeListViewArray.html">pyarrow.LargeListViewArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.MapArray.html">pyarrow.MapArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.RunEndEncodedArray.html">pyarrow.RunEndEncodedArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.StructArray.html">pyarrow.StructArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UnionArray.html">pyarrow.UnionArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ExtensionArray.html">pyarrow.ExtensionArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedShapeTensorArray.html">pyarrow.FixedShapeTensorArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.OpaqueArray.html">pyarrow.OpaqueArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.JsonArray.html">pyarrow.JsonArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UuidArray.html">pyarrow.UuidArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Bool8Array.html">pyarrow.Bool8Array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.scalar.html">pyarrow.scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.NA.html">pyarrow.NA</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Scalar.html">pyarrow.Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BooleanScalar.html">pyarrow.BooleanScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int8Scalar.html">pyarrow.Int8Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int16Scalar.html">pyarrow.Int16Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int32Scalar.html">pyarrow.Int32Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Int64Scalar.html">pyarrow.Int64Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.NullScalar.html">pyarrow.NullScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt8Scalar.html">pyarrow.UInt8Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt16Scalar.html">pyarrow.UInt16Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt32Scalar.html">pyarrow.UInt32Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UInt64Scalar.html">pyarrow.UInt64Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.HalfFloatScalar.html">pyarrow.HalfFloatScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FloatScalar.html">pyarrow.FloatScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.DoubleScalar.html">pyarrow.DoubleScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BinaryScalar.html">pyarrow.BinaryScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.StringScalar.html">pyarrow.StringScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedSizeBinaryScalar.html">pyarrow.FixedSizeBinaryScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeBinaryScalar.html">pyarrow.LargeBinaryScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeStringScalar.html">pyarrow.LargeStringScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BinaryViewScalar.html">pyarrow.BinaryViewScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.StringViewScalar.html">pyarrow.StringViewScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Time32Scalar.html">pyarrow.Time32Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Time64Scalar.html">pyarrow.Time64Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Date32Scalar.html">pyarrow.Date32Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Date64Scalar.html">pyarrow.Date64Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.TimestampScalar.html">pyarrow.TimestampScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.DurationScalar.html">pyarrow.DurationScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.MonthDayNanoIntervalScalar.html">pyarrow.MonthDayNanoIntervalScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal128Scalar.html">pyarrow.Decimal128Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Decimal256Scalar.html">pyarrow.Decimal256Scalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.DictionaryScalar.html">pyarrow.DictionaryScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.RunEndEncodedScalar.html">pyarrow.RunEndEncodedScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ListScalar.html">pyarrow.ListScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedSizeListScalar.html">pyarrow.FixedSizeListScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeListScalar.html">pyarrow.LargeListScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ListViewScalar.html">pyarrow.ListViewScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.LargeListViewScalar.html">pyarrow.LargeListViewScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.MapScalar.html">pyarrow.MapScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.StructScalar.html">pyarrow.StructScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UnionScalar.html">pyarrow.UnionScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ExtensionScalar.html">pyarrow.ExtensionScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedShapeTensorScalar.html">pyarrow.FixedShapeTensorScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.OpaqueScalar.html">pyarrow.OpaqueScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.JsonScalar.html">pyarrow.JsonScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.UuidScalar.html">pyarrow.UuidScalar</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Bool8Scalar.html">pyarrow.Bool8Scalar</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/memory.html">Buffers and Memory</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.allocate_buffer.html">pyarrow.allocate_buffer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.py_buffer.html">pyarrow.py_buffer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.foreign_buffer.html">pyarrow.foreign_buffer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Buffer.html">pyarrow.Buffer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ResizableBuffer.html">pyarrow.ResizableBuffer</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Codec.html">pyarrow.Codec</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compress.html">pyarrow.compress</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.decompress.html">pyarrow.decompress</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.MemoryPool.html">pyarrow.MemoryPool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.default_memory_pool.html">pyarrow.default_memory_pool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.jemalloc_memory_pool.html">pyarrow.jemalloc_memory_pool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.mimalloc_memory_pool.html">pyarrow.mimalloc_memory_pool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.system_memory_pool.html">pyarrow.system_memory_pool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.jemalloc_set_decay_ms.html">pyarrow.jemalloc_set_decay_ms</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.set_memory_pool.html">pyarrow.set_memory_pool</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.log_memory_allocations.html">pyarrow.log_memory_allocations</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.total_allocated_bytes.html">pyarrow.total_allocated_bytes</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/tables.html">Tables and Tensors</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.chunked_array.html">pyarrow.chunked_array</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.concat_arrays.html">pyarrow.concat_arrays</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.concat_tables.html">pyarrow.concat_tables</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.record_batch.html">pyarrow.record_batch</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.concat_batches.html">pyarrow.concat_batches</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.table.html">pyarrow.table</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ChunkedArray.html">pyarrow.ChunkedArray</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.RecordBatch.html">pyarrow.RecordBatch</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Table.html">pyarrow.Table</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.TableGroupBy.html">pyarrow.TableGroupBy</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.RecordBatchReader.html">pyarrow.RecordBatchReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.interchange.from_dataframe.html">pyarrow.interchange.from_dataframe</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.Tensor.html">pyarrow.Tensor</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/compute.html">Compute Functions</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.all.html">pyarrow.compute.all</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.any.html">pyarrow.compute.any</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.approximate_median.html">pyarrow.compute.approximate_median</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.count.html">pyarrow.compute.count</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.count_distinct.html">pyarrow.compute.count_distinct</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.index.html">pyarrow.compute.index</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.max.html">pyarrow.compute.max</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.mean.html">pyarrow.compute.mean</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.min.html">pyarrow.compute.min</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.min_max.html">pyarrow.compute.min_max</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.mode.html">pyarrow.compute.mode</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.pivot_wider.html">pyarrow.compute.pivot_wider</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.product.html">pyarrow.compute.product</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.quantile.html">pyarrow.compute.quantile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.stddev.html">pyarrow.compute.stddev</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sum.html">pyarrow.compute.sum</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.tdigest.html">pyarrow.compute.tdigest</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.variance.html">pyarrow.compute.variance</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cumulative_sum.html">pyarrow.compute.cumulative_sum</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cumulative_sum_checked.html">pyarrow.compute.cumulative_sum_checked</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cumulative_max.html">pyarrow.compute.cumulative_max</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cumulative_min.html">pyarrow.compute.cumulative_min</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.abs.html">pyarrow.compute.abs</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.add.html">pyarrow.compute.add</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.add_checked.html">pyarrow.compute.add_checked</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sign.html">pyarrow.compute.sign</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sqrt.html">pyarrow.compute.sqrt</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sqrt_checked.html">pyarrow.compute.sqrt_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.subtract.html">pyarrow.compute.subtract</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.bit_wise_and.html">pyarrow.compute.bit_wise_and</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.bit_wise_not.html">pyarrow.compute.bit_wise_not</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.bit_wise_or.html">pyarrow.compute.bit_wise_or</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.bit_wise_xor.html">pyarrow.compute.bit_wise_xor</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.round.html">pyarrow.compute.round</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.round_to_multiple.html">pyarrow.compute.round_to_multiple</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.trunc.html">pyarrow.compute.trunc</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ln.html">pyarrow.compute.ln</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ln_checked.html">pyarrow.compute.ln_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.log10.html">pyarrow.compute.log10</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.log1p.html">pyarrow.compute.log1p</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.logb.html">pyarrow.compute.logb</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.acos.html">pyarrow.compute.acos</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.asin.html">pyarrow.compute.asin</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.asin_checked.html">pyarrow.compute.asin_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.atan.html">pyarrow.compute.atan</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.atan2.html">pyarrow.compute.atan2</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cos.html">pyarrow.compute.cos</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.cos_checked.html">pyarrow.compute.cos_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sin.html">pyarrow.compute.sin</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.sin_checked.html">pyarrow.compute.sin_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.tan.html">pyarrow.compute.tan</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.tan_checked.html">pyarrow.compute.tan_checked</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.equal.html">pyarrow.compute.equal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.greater.html">pyarrow.compute.greater</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.greater_equal.html">pyarrow.compute.greater_equal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.less.html">pyarrow.compute.less</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.less_equal.html">pyarrow.compute.less_equal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.not_equal.html">pyarrow.compute.not_equal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.max_element_wise.html">pyarrow.compute.max_element_wise</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.min_element_wise.html">pyarrow.compute.min_element_wise</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.and_.html">pyarrow.compute.and_</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.and_kleene.html">pyarrow.compute.and_kleene</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.and_not.html">pyarrow.compute.and_not</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.and_not_kleene.html">pyarrow.compute.and_not_kleene</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.invert.html">pyarrow.compute.invert</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.or_.html">pyarrow.compute.or_</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.or_kleene.html">pyarrow.compute.or_kleene</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.xor.html">pyarrow.compute.xor</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_alnum.html">pyarrow.compute.ascii_is_alnum</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_alpha.html">pyarrow.compute.ascii_is_alpha</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_decimal.html">pyarrow.compute.ascii_is_decimal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_lower.html">pyarrow.compute.ascii_is_lower</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_printable.html">pyarrow.compute.ascii_is_printable</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_space.html">pyarrow.compute.ascii_is_space</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_upper.html">pyarrow.compute.ascii_is_upper</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_alnum.html">pyarrow.compute.utf8_is_alnum</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_alpha.html">pyarrow.compute.utf8_is_alpha</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_decimal.html">pyarrow.compute.utf8_is_decimal</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_digit.html">pyarrow.compute.utf8_is_digit</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_lower.html">pyarrow.compute.utf8_is_lower</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_numeric.html">pyarrow.compute.utf8_is_numeric</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_printable.html">pyarrow.compute.utf8_is_printable</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_is_upper.html">pyarrow.compute.utf8_is_upper</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_is_title.html">pyarrow.compute.ascii_is_title</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.string_is_ascii.html">pyarrow.compute.string_is_ascii</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_capitalize.html">pyarrow.compute.ascii_capitalize</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_lower.html">pyarrow.compute.ascii_lower</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_reverse.html">pyarrow.compute.ascii_reverse</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.ascii_swapcase.html">pyarrow.compute.ascii_swapcase</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.binary_length.html">pyarrow.compute.binary_length</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.binary_repeat.html">pyarrow.compute.binary_repeat</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.binary_reverse.html">pyarrow.compute.binary_reverse</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.utf8_swapcase.html">pyarrow.compute.utf8_swapcase</a></li> |
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| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.StrptimeOptions.html">pyarrow.compute.StrptimeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.StructFieldOptions.html">pyarrow.compute.StructFieldOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.TakeOptions.html">pyarrow.compute.TakeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.TDigestOptions.html">pyarrow.compute.TDigestOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.TrimOptions.html">pyarrow.compute.TrimOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.VarianceOptions.html">pyarrow.compute.VarianceOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.WeekOptions.html">pyarrow.compute.WeekOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.register_scalar_function.html">pyarrow.compute.register_scalar_function</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.UdfContext.html">pyarrow.compute.UdfContext</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.field.html">pyarrow.compute.field</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.compute.scalar.html">pyarrow.compute.scalar</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/acero.html">Acero - Streaming Execution Engine</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.Declaration.html">pyarrow.acero.Declaration</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.ExecNodeOptions.html">pyarrow.acero.ExecNodeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.TableSourceNodeOptions.html">pyarrow.acero.TableSourceNodeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.ScanNodeOptions.html">pyarrow.acero.ScanNodeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.FilterNodeOptions.html">pyarrow.acero.FilterNodeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.ProjectNodeOptions.html">pyarrow.acero.ProjectNodeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.AggregateNodeOptions.html">pyarrow.acero.AggregateNodeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.OrderByNodeOptions.html">pyarrow.acero.OrderByNodeOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.acero.HashJoinNodeOptions.html">pyarrow.acero.HashJoinNodeOptions</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/substrait.html">Substrait</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.run_query.html">pyarrow.substrait.run_query</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.BoundExpressions.html">pyarrow.substrait.BoundExpressions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.deserialize_expressions.html">pyarrow.substrait.deserialize_expressions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.serialize_expressions.html">pyarrow.substrait.serialize_expressions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.serialize_schema.html">pyarrow.substrait.serialize_schema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.deserialize_schema.html">pyarrow.substrait.deserialize_schema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.SubstraitSchema.html">pyarrow.substrait.SubstraitSchema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.substrait.get_supported_functions.html">pyarrow.substrait.get_supported_functions</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/files.html">Streams and File Access</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.input_stream.html">pyarrow.input_stream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.output_stream.html">pyarrow.output_stream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.memory_map.html">pyarrow.memory_map</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.create_memory_map.html">pyarrow.create_memory_map</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.NativeFile.html">pyarrow.NativeFile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.OSFile.html">pyarrow.OSFile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.PythonFile.html">pyarrow.PythonFile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BufferReader.html">pyarrow.BufferReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.BufferOutputStream.html">pyarrow.BufferOutputStream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.FixedSizeBufferWriter.html">pyarrow.FixedSizeBufferWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.MemoryMappedFile.html">pyarrow.MemoryMappedFile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.CompressedInputStream.html">pyarrow.CompressedInputStream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.CompressedOutputStream.html">pyarrow.CompressedOutputStream</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/ipc.html">Serialization and IPC</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.new_file.html">pyarrow.ipc.new_file</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.open_file.html">pyarrow.ipc.open_file</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.new_stream.html">pyarrow.ipc.new_stream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.open_stream.html">pyarrow.ipc.open_stream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.read_message.html">pyarrow.ipc.read_message</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.read_record_batch.html">pyarrow.ipc.read_record_batch</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.get_record_batch_size.html">pyarrow.ipc.get_record_batch_size</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.read_tensor.html">pyarrow.ipc.read_tensor</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.write_tensor.html">pyarrow.ipc.write_tensor</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.get_tensor_size.html">pyarrow.ipc.get_tensor_size</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.IpcReadOptions.html">pyarrow.ipc.IpcReadOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.IpcWriteOptions.html">pyarrow.ipc.IpcWriteOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.Message.html">pyarrow.ipc.Message</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.MessageReader.html">pyarrow.ipc.MessageReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.RecordBatchFileReader.html">pyarrow.ipc.RecordBatchFileReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.RecordBatchFileWriter.html">pyarrow.ipc.RecordBatchFileWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.RecordBatchStreamReader.html">pyarrow.ipc.RecordBatchStreamReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.ipc.RecordBatchStreamWriter.html">pyarrow.ipc.RecordBatchStreamWriter</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/flight.html">Arrow Flight</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.Action.html">pyarrow.flight.Action</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ActionType.html">pyarrow.flight.ActionType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.DescriptorType.html">pyarrow.flight.DescriptorType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightDescriptor.html">pyarrow.flight.FlightDescriptor</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightEndpoint.html">pyarrow.flight.FlightEndpoint</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightInfo.html">pyarrow.flight.FlightInfo</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.Location.html">pyarrow.flight.Location</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.MetadataRecordBatchReader.html">pyarrow.flight.MetadataRecordBatchReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.MetadataRecordBatchWriter.html">pyarrow.flight.MetadataRecordBatchWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.Ticket.html">pyarrow.flight.Ticket</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.Result.html">pyarrow.flight.Result</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.connect.html">pyarrow.flight.connect</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightCallOptions.html">pyarrow.flight.FlightCallOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightClient.html">pyarrow.flight.FlightClient</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightStreamReader.html">pyarrow.flight.FlightStreamReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightStreamWriter.html">pyarrow.flight.FlightStreamWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ClientMiddlewareFactory.html">pyarrow.flight.ClientMiddlewareFactory</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ClientMiddleware.html">pyarrow.flight.ClientMiddleware</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightDataStream.html">pyarrow.flight.FlightDataStream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightMetadataWriter.html">pyarrow.flight.FlightMetadataWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightServerBase.html">pyarrow.flight.FlightServerBase</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.GeneratorStream.html">pyarrow.flight.GeneratorStream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.RecordBatchStream.html">pyarrow.flight.RecordBatchStream</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ServerCallContext.html">pyarrow.flight.ServerCallContext</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ServerMiddlewareFactory.html">pyarrow.flight.ServerMiddlewareFactory</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ServerMiddleware.html">pyarrow.flight.ServerMiddleware</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ClientAuthHandler.html">pyarrow.flight.ClientAuthHandler</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.ServerAuthHandler.html">pyarrow.flight.ServerAuthHandler</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightError.html">pyarrow.flight.FlightError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightCancelledError.html">pyarrow.flight.FlightCancelledError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightInternalError.html">pyarrow.flight.FlightInternalError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightServerError.html">pyarrow.flight.FlightServerError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightTimedOutError.html">pyarrow.flight.FlightTimedOutError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightUnauthenticatedError.html">pyarrow.flight.FlightUnauthenticatedError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightUnauthorizedError.html">pyarrow.flight.FlightUnauthorizedError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightUnavailableError.html">pyarrow.flight.FlightUnavailableError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightWriteSizeExceededError.html">pyarrow.flight.FlightWriteSizeExceededError</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.FlightMethod.html">pyarrow.flight.FlightMethod</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.flight.CallInfo.html">pyarrow.flight.CallInfo</a></li> |
| </ul> |
| </details></li> |
| <li class="toctree-l3 has-children"><a class="reference internal" href="../python/api/formats.html">Tabular File Formats</a><details><summary><span class="toctree-toggle" role="presentation"><i class="fa-solid fa-chevron-down"></i></span></summary><ul> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.ConvertOptions.html">pyarrow.csv.ConvertOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.CSVStreamingReader.html">pyarrow.csv.CSVStreamingReader</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.CSVWriter.html">pyarrow.csv.CSVWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.ISO8601.html">pyarrow.csv.ISO8601</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.ParseOptions.html">pyarrow.csv.ParseOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.ReadOptions.html">pyarrow.csv.ReadOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.WriteOptions.html">pyarrow.csv.WriteOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.open_csv.html">pyarrow.csv.open_csv</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.read_csv.html">pyarrow.csv.read_csv</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.write_csv.html">pyarrow.csv.write_csv</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.csv.InvalidRow.html">pyarrow.csv.InvalidRow</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.feather.read_feather.html">pyarrow.feather.read_feather</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.feather.read_table.html">pyarrow.feather.read_table</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.feather.write_feather.html">pyarrow.feather.write_feather</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.json.ReadOptions.html">pyarrow.json.ReadOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.json.ParseOptions.html">pyarrow.json.ParseOptions</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.json.open_json.html">pyarrow.json.open_json</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.json.read_json.html">pyarrow.json.read_json</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.ParquetDataset.html">pyarrow.parquet.ParquetDataset</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.ParquetFile.html">pyarrow.parquet.ParquetFile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.ParquetWriter.html">pyarrow.parquet.ParquetWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.read_table.html">pyarrow.parquet.read_table</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.read_metadata.html">pyarrow.parquet.read_metadata</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.read_pandas.html">pyarrow.parquet.read_pandas</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.read_schema.html">pyarrow.parquet.read_schema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.write_metadata.html">pyarrow.parquet.write_metadata</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.write_table.html">pyarrow.parquet.write_table</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.write_to_dataset.html">pyarrow.parquet.write_to_dataset</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.FileMetaData.html">pyarrow.parquet.FileMetaData</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.RowGroupMetaData.html">pyarrow.parquet.RowGroupMetaData</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.SortingColumn.html">pyarrow.parquet.SortingColumn</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.ColumnChunkMetaData.html">pyarrow.parquet.ColumnChunkMetaData</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.Statistics.html">pyarrow.parquet.Statistics</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.ParquetSchema.html">pyarrow.parquet.ParquetSchema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.ColumnSchema.html">pyarrow.parquet.ColumnSchema</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.ParquetLogicalType.html">pyarrow.parquet.ParquetLogicalType</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.encryption.CryptoFactory.html">pyarrow.parquet.encryption.CryptoFactory</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.encryption.KmsClient.html">pyarrow.parquet.encryption.KmsClient</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.encryption.KmsConnectionConfig.html">pyarrow.parquet.encryption.KmsConnectionConfig</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.encryption.EncryptionConfiguration.html">pyarrow.parquet.encryption.EncryptionConfiguration</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.parquet.encryption.DecryptionConfiguration.html">pyarrow.parquet.encryption.DecryptionConfiguration</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.orc.ORCFile.html">pyarrow.orc.ORCFile</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.orc.ORCWriter.html">pyarrow.orc.ORCWriter</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.orc.read_table.html">pyarrow.orc.read_table</a></li> |
| <li class="toctree-l4"><a class="reference internal" href="../python/generated/pyarrow.orc.write_table.html">pyarrow.orc.write_table</a></li> |
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| <section id="arrow-flight-rpc"> |
| <h1>Arrow Flight RPC<a class="headerlink" href="#arrow-flight-rpc" title="Link to this heading">#</a></h1> |
| <p>Arrow Flight is an RPC framework for efficient transfer of Flight data |
| over the network.</p> |
| <div class="admonition seealso"> |
| <p class="admonition-title">See also</p> |
| <dl class="simple"> |
| <dt><a class="reference internal" href="../format/Flight.html"><span class="doc">Flight protocol documentation</span></a></dt><dd><p>Documentation of the Flight protocol, including how to use |
| Flight conceptually.</p> |
| </dd> |
| <dt><a class="reference internal" href="api/flight.html"><span class="doc">Flight API documentation</span></a></dt><dd><p>C++ API documentation listing all of the various client and |
| server types.</p> |
| </dd> |
| <dt><a class="reference external" href="https://arrow.apache.org/cookbook/cpp/flight.html">C++ Cookbook</a></dt><dd><p>Recipes for using Arrow Flight in C++.</p> |
| </dd> |
| </dl> |
| </div> |
| <section id="writing-a-flight-service"> |
| <h2>Writing a Flight Service<a class="headerlink" href="#writing-a-flight-service" title="Link to this heading">#</a></h2> |
| <p>Servers are subclasses of <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight16FlightServerBaseE" title="arrow::flight::FlightServerBase"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">arrow::flight::FlightServerBase</span></code></a>. To |
| implement individual RPCs, override the RPC methods on this class.</p> |
| <div class="highlight-cpp notranslate"><div class="highlight"><pre><span></span><span class="k">class</span><span class="w"> </span><span class="nc">MyFlightServer</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="n">FlightServerBase</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">Status</span><span class="w"> </span><span class="nf">ListFlights</span><span class="p">(</span><span class="k">const</span><span class="w"> </span><span class="n">ServerCallContext</span><span class="o">&</span><span class="w"> </span><span class="n">context</span><span class="p">,</span><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="n">Criteria</span><span class="o">*</span><span class="w"> </span><span class="n">criteria</span><span class="p">,</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">unique_ptr</span><span class="o"><</span><span class="n">FlightListing</span><span class="o">>*</span><span class="w"> </span><span class="n">listings</span><span class="p">)</span><span class="w"> </span><span class="k">override</span><span class="w"> </span><span class="p">{</span> |
| <span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">vector</span><span class="o"><</span><span class="n">FlightInfo</span><span class="o">></span><span class="w"> </span><span class="n">flights</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">...;</span> |
| <span class="w"> </span><span class="o">*</span><span class="n">listings</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">unique_ptr</span><span class="o"><</span><span class="n">FlightListing</span><span class="o">></span><span class="p">(</span><span class="k">new</span><span class="w"> </span><span class="n">SimpleFlightListing</span><span class="p">(</span><span class="n">flights</span><span class="p">));</span> |
| <span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">Status</span><span class="o">::</span><span class="n">OK</span><span class="p">();</span> |
| <span class="w"> </span><span class="p">}</span> |
| <span class="p">};</span> |
| </pre></div> |
| </div> |
| <p>Each RPC method always takes a |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight17ServerCallContextE" title="arrow::flight::ServerCallContext"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">arrow::flight::ServerCallContext</span></code></a> for common parameters and |
| returns a <a class="reference internal" href="api/support.html#_CPPv4N5arrow6StatusE" title="arrow::Status"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">arrow::Status</span></code></a> to indicate success or |
| failure. Flight-specific error codes can be returned via |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight15MakeFlightErrorE16FlightStatusCodeNSt6stringENSt6stringE" title="arrow::flight::MakeFlightError"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">arrow::flight::MakeFlightError()</span></code></a>.</p> |
| <p>RPC methods that return a value in addition to a status will use an |
| out parameter, as shown above. Often, there are helper classes |
| providing basic implementations of these out parameters. For instance, |
| above, <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight19SimpleFlightListingE" title="arrow::flight::SimpleFlightListing"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">arrow::flight::SimpleFlightListing</span></code></a> uses a vector of |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight10FlightInfoE" title="arrow::flight::FlightInfo"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">arrow::flight::FlightInfo</span></code></a> objects as the result of a |
| <code class="docutils literal notranslate"><span class="pre">ListFlights</span></code> RPC.</p> |
| <p>To start a server, create a <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight8LocationE" title="arrow::flight::Location"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">arrow::flight::Location</span></code></a> to |
| specify where to listen, and call |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight16FlightServerBase4InitERK19FlightServerOptions" title="arrow::flight::FlightServerBase::Init"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">arrow::flight::FlightServerBase::Init()</span></code></a>. This will start the |
| server, but won’t block the rest of the program. Use |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight16FlightServerBase20SetShutdownOnSignalsEKNSt6vectorIiEE" title="arrow::flight::FlightServerBase::SetShutdownOnSignals"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">arrow::flight::FlightServerBase::SetShutdownOnSignals()</span></code></a> to |
| enable stopping the server if an interrupt signal is received, then |
| call <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight16FlightServerBase5ServeEv" title="arrow::flight::FlightServerBase::Serve"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">arrow::flight::FlightServerBase::Serve()</span></code></a> to block until the |
| server stops.</p> |
| <div class="highlight-cpp notranslate"><div class="highlight"><pre><span></span><span class="n">std</span><span class="o">::</span><span class="n">unique_ptr</span><span class="o"><</span><span class="n">arrow</span><span class="o">::</span><span class="n">flight</span><span class="o">::</span><span class="n">FlightServerBase</span><span class="o">></span><span class="w"> </span><span class="n">server</span><span class="p">;</span> |
| <span class="c1">// Initialize server</span> |
| <span class="n">arrow</span><span class="o">::</span><span class="n">flight</span><span class="o">::</span><span class="n">Location</span><span class="w"> </span><span class="n">location</span><span class="p">;</span> |
| <span class="c1">// Listen to all interfaces on a free port</span> |
| <span class="n">ARROW_CHECK_OK</span><span class="p">(</span><span class="n">arrow</span><span class="o">::</span><span class="n">flight</span><span class="o">::</span><span class="n">Location</span><span class="o">::</span><span class="n">ForGrpcTcp</span><span class="p">(</span><span class="s">"0.0.0.0"</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span><span class="w"> </span><span class="o">&</span><span class="n">location</span><span class="p">));</span> |
| <span class="n">arrow</span><span class="o">::</span><span class="n">flight</span><span class="o">::</span><span class="n">FlightServerOptions</span><span class="w"> </span><span class="nf">options</span><span class="p">(</span><span class="n">location</span><span class="p">);</span> |
| |
| <span class="c1">// Start the server</span> |
| <span class="n">ARROW_CHECK_OK</span><span class="p">(</span><span class="n">server</span><span class="o">-></span><span class="n">Init</span><span class="p">(</span><span class="n">options</span><span class="p">));</span> |
| <span class="c1">// Exit with a clean error code (0) on SIGTERM</span> |
| <span class="n">ARROW_CHECK_OK</span><span class="p">(</span><span class="n">server</span><span class="o">-></span><span class="n">SetShutdownOnSignals</span><span class="p">({</span><span class="n">SIGTERM</span><span class="p">}));</span> |
| |
| <span class="n">std</span><span class="o">::</span><span class="n">cout</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="s">"Server listening on localhost:"</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">server</span><span class="o">-></span><span class="n">port</span><span class="p">()</span><span class="w"> </span><span class="o"><<</span><span class="w"> </span><span class="n">std</span><span class="o">::</span><span class="n">endl</span><span class="p">;</span> |
| <span class="n">ARROW_CHECK_OK</span><span class="p">(</span><span class="n">server</span><span class="o">-></span><span class="n">Serve</span><span class="p">());</span> |
| </pre></div> |
| </div> |
| </section> |
| <section id="using-the-flight-client"> |
| <h2>Using the Flight Client<a class="headerlink" href="#using-the-flight-client" title="Link to this heading">#</a></h2> |
| <p>To connect to a Flight service, create an instance of |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight12FlightClientE" title="arrow::flight::FlightClient"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">arrow::flight::FlightClient</span></code></a> by calling <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight12FlightClient7ConnectERK8Location" title="arrow::flight::FlightClient::Connect"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">Connect</span></code></a>.</p> |
| <p>Each RPC method returns <a class="reference internal" href="api/support.html#_CPPv4I0EN5arrow6ResultE" title="arrow::Result"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">arrow::Result</span></code></a> to indicate the |
| success/failure of the request, and the result object if the request |
| succeeded. Some calls are streaming calls, so they will return a |
| reader and/or a writer object; the final call status isn’t known until |
| the stream is completed.</p> |
| </section> |
| <section id="cancellation-and-timeouts"> |
| <h2>Cancellation and Timeouts<a class="headerlink" href="#cancellation-and-timeouts" title="Link to this heading">#</a></h2> |
| <p>When making a call, clients can optionally provide |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight17FlightCallOptionsE" title="arrow::flight::FlightCallOptions"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">FlightCallOptions</span></code></a>. This |
| allows clients to set a timeout on calls or provide custom HTTP |
| headers, among other features. Also, some objects returned by client |
| RPC calls expose a <code class="docutils literal notranslate"><span class="pre">Cancel</span></code> method which allows terminating a call |
| early.</p> |
| <p>On the server side, no additional code is needed to implement |
| timeouts. For cancellation, the server needs to manually poll |
| <a class="reference internal" href="api/flight.html#_CPPv4NK5arrow6flight17ServerCallContext12is_cancelledEv" title="arrow::flight::ServerCallContext::is_cancelled"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">ServerCallContext::is_cancelled</span></code></a> to check if the |
| client has cancelled the call, and if so, break out of any processing |
| the server is currently doing.</p> |
| </section> |
| <section id="enabling-tls"> |
| <h2>Enabling TLS<a class="headerlink" href="#enabling-tls" title="Link to this heading">#</a></h2> |
| <p>TLS can be enabled when setting up a server by providing a certificate |
| and key pair to <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight16FlightServerBase4InitERK19FlightServerOptions" title="arrow::flight::FlightServerBase::Init"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">FlightServerBase::Init</span></code></a>.</p> |
| <p>On the client side, use <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight8Location10ForGrpcTlsERKNSt6stringEKi" title="arrow::flight::Location::ForGrpcTls"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">Location::ForGrpcTls</span></code></a> to construct the |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight8LocationE" title="arrow::flight::Location"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">arrow::flight::Location</span></code></a> to listen on.</p> |
| </section> |
| <section id="enabling-authentication"> |
| <h2>Enabling Authentication<a class="headerlink" href="#enabling-authentication" title="Link to this heading">#</a></h2> |
| <div class="admonition warning"> |
| <p class="admonition-title">Warning</p> |
| <p>Authentication is insecure without enabling TLS.</p> |
| </div> |
| <p>Handshake-based authentication can be enabled by implementing |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight17ServerAuthHandlerE" title="arrow::flight::ServerAuthHandler"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">ServerAuthHandler</span></code></a> and |
| providing this to the server during construction.</p> |
| <p>Authentication consists of two parts: on initial client connection, |
| the server and client authentication implementations can perform any |
| negotiation needed. The client authentication handler then provides a |
| token that will be attached to future calls. This is done by calling |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight12FlightClient12AuthenticateERK17FlightCallOptionsNSt10unique_ptrI17ClientAuthHandlerEE" title="arrow::flight::FlightClient::Authenticate"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">Authenticate</span></code></a> with |
| the desired client authentication implementation.</p> |
| <p>On each RPC thereafter, the client handler’s token is automatically |
| added to the call in the request headers. The server authentication |
| handler validates the token and provides the identity of the |
| client. On the server, this identity can be obtained from the |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight17ServerCallContextE" title="arrow::flight::ServerCallContext"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">arrow::flight::ServerCallContext</span></code></a>.</p> |
| </section> |
| <section id="custom-middleware"> |
| <h2>Custom Middleware<a class="headerlink" href="#custom-middleware" title="Link to this heading">#</a></h2> |
| <p>Servers and clients support custom middleware (or interceptors) that |
| are called on every request and can modify the request in a limited |
| fashion. These can be implemented by subclassing <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight16ServerMiddlewareE" title="arrow::flight::ServerMiddleware"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">ServerMiddleware</span></code></a> and <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight16ClientMiddlewareE" title="arrow::flight::ClientMiddleware"><code class="xref cpp cpp-class docutils literal notranslate"><span class="pre">ClientMiddleware</span></code></a>, then providing them when creating |
| the client or server.</p> |
| <p>Middleware are fairly limited, but they can add headers to a |
| request/response. On the server, they can inspect incoming headers and |
| fail the request; hence, they can be used to implement custom |
| authentication methods.</p> |
| </section> |
| <section id="best-practices"> |
| <span id="flight-best-practices"></span><h2>Best practices<a class="headerlink" href="#best-practices" title="Link to this heading">#</a></h2> |
| <section id="grpc"> |
| <h3>gRPC<a class="headerlink" href="#grpc" title="Link to this heading">#</a></h3> |
| <p>When using the default gRPC transport, options can be passed to it via |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight19FlightClientOptions15generic_optionsE" title="arrow::flight::FlightClientOptions::generic_options"><code class="xref cpp cpp-member docutils literal notranslate"><span class="pre">arrow::flight::FlightClientOptions::generic_options</span></code></a>. For example:</p> |
| <div class="sd-tab-set docutils"> |
| <input checked="checked" id="sd-tab-item-0" name="sd-tab-set-0" type="radio"> |
| <label class="sd-tab-label" for="sd-tab-item-0"> |
| C++</label><div class="sd-tab-content docutils"> |
| <div class="highlight-cpp notranslate"><div class="highlight"><pre><span></span><span class="k">auto</span><span class="w"> </span><span class="n">options</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">FlightClientOptions</span><span class="o">::</span><span class="n">Defaults</span><span class="p">();</span> |
| <span class="c1">// Set the period after which a keepalive ping is sent on transport.</span> |
| <span class="n">options</span><span class="p">.</span><span class="n">generic_options</span><span class="p">.</span><span class="n">emplace_back</span><span class="p">(</span><span class="n">GRPC_ARG_KEEPALIVE_TIME_MS</span><span class="p">,</span><span class="w"> </span><span class="mi">60000</span><span class="p">);</span> |
| </pre></div> |
| </div> |
| </div> |
| <input id="sd-tab-item-1" name="sd-tab-set-0" type="radio"> |
| <label class="sd-tab-label" for="sd-tab-item-1"> |
| Python</label><div class="sd-tab-content docutils"> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="c1"># Set the period after which a keepalive ping is sent on transport.</span> |
| <span class="n">generic_options</span> <span class="o">=</span> <span class="p">[(</span><span class="s2">"GRPC_ARG_KEEPALIVE_TIME_MS"</span><span class="p">,</span> <span class="mi">60000</span><span class="p">)]</span> |
| <span class="n">client</span> <span class="o">=</span> <span class="n">pyarrow</span><span class="o">.</span><span class="n">flight</span><span class="o">.</span><span class="n">FlightClient</span><span class="p">(</span><span class="n">server_uri</span><span class="p">,</span> <span class="n">generic_options</span><span class="o">=</span><span class="n">generic_options</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| <p>Also see <a class="reference external" href="https://grpc.io/docs/guides/performance/#general">best gRPC practices</a> and available <a class="reference external" href="https://grpc.github.io/grpc/cpp/group__grpc__arg__keys.html">gRPC keys</a>.</p> |
| </section> |
| <section id="re-use-clients-whenever-possible"> |
| <h3>Re-use clients whenever possible<a class="headerlink" href="#re-use-clients-whenever-possible" title="Link to this heading">#</a></h3> |
| <p>Creating and closing clients requires setup and teardown on the client and |
| server side which can take away from actually handling RPCs. Reuse clients |
| whenever possible to avoid this. Note that clients are thread-safe, so a |
| single client can be shared across multiple threads.</p> |
| </section> |
| <section id="dont-round-robin-load-balance"> |
| <h3>Don’t round-robin load balance<a class="headerlink" href="#dont-round-robin-load-balance" title="Link to this heading">#</a></h3> |
| <p><a class="reference external" href="https://github.com/grpc/grpc/blob/master/doc/load-balancing.md#round_robin">Round robin load balancing</a> means every client can have an open connection to |
| every server, causing an unexpected number of open connections and depleting |
| server resources.</p> |
| </section> |
| <section id="debugging-connection-issues"> |
| <h3>Debugging connection issues<a class="headerlink" href="#debugging-connection-issues" title="Link to this heading">#</a></h3> |
| <p>When facing unexpected disconnects on long running connections use netstat to |
| monitor the number of open connections. If number of connections is much |
| greater than the number of clients it might cause issues.</p> |
| <p>For debugging, certain environment variables enable logging in gRPC. For |
| example, <code class="docutils literal notranslate"><span class="pre">env</span> <span class="pre">GRPC_VERBOSITY=info</span> <span class="pre">GRPC_TRACE=http</span></code> will print the initial |
| headers (on both sides) so you can see if gRPC established the connection or |
| not. It will also print when a message is sent, so you can tell if the |
| connection is open or not.</p> |
| <p>gRPC may not report connection errors until a call is actually made. |
| Hence, to detect connection errors when creating a client, some sort |
| of dummy RPC should be made.</p> |
| </section> |
| <section id="memory-management"> |
| <h3>Memory management<a class="headerlink" href="#memory-management" title="Link to this heading">#</a></h3> |
| <p>Flight tries to reuse allocations made by gRPC to avoid redundant |
| data copies. However, experience shows that such data is frequently |
| misaligned. Some use cases might require data to have data type-specific |
| alignment (for example, for the data buffer of an Int32 array to be aligned |
| on a 4-byte boundary), which can be enforced |
| by setting <a class="reference internal" href="api/ipc.html#_CPPv4N5arrow3ipc14IpcReadOptions16ensure_alignmentE" title="arrow::ipc::IpcReadOptions::ensure_alignment"><code class="xref cpp cpp-member docutils literal notranslate"><span class="pre">arrow::ipc::IpcReadOptions::ensure_alignment</span></code></a> |
| to <code class="xref cpp cpp-member docutils literal notranslate"><span class="pre">arrow::ipc::Alignment::kDataTypeSpecificAlignment</span></code>. |
| This uses the <a class="reference internal" href="api/ipc.html#_CPPv4N5arrow3ipc14IpcReadOptions11memory_poolE" title="arrow::ipc::IpcReadOptions::memory_pool"><code class="xref cpp cpp-member docutils literal notranslate"><span class="pre">arrow::ipc::IpcReadOptions::memory_pool</span></code></a> |
| to allocate memory with aligned addresses, but only for mis-aligned data. |
| However, this creates data copies of your data received via Flight.</p> |
| <p>Unless gRPC data are copied as described above, allocations made by gRPC may not |
| be tracked by the Arrow memory pool, and that memory usage behavior, |
| such as whether free memory is returned to the system, is dependent |
| on the allocator that gRPC uses (usually the system allocator).</p> |
| <p>A quick way of testing: attach to the process with a debugger and call |
| <code class="docutils literal notranslate"><span class="pre">malloc_trim</span></code>, or call <a class="reference internal" href="api/memory.html#_CPPv4N5arrow10MemoryPool13ReleaseUnusedEv" title="arrow::MemoryPool::ReleaseUnused"><code class="xref cpp cpp-func docutils literal notranslate"><span class="pre">ReleaseUnused</span></code></a> |
| on the system pool. If memory usage drops, then likely, there is memory |
| allocated by gRPC or by the application that the system allocator was holding |
| on to. This can be adjusted in platform-specific ways; see an investigation |
| in <a class="reference external" href="https://issues.apache.org/jira/browse/ARROW-16697">ARROW-16697</a> for an example of how this works on Linux/glibc. glibc malloc |
| can be explicitly told to dump caches.</p> |
| </section> |
| <section id="excessive-traffic"> |
| <h3>Excessive traffic<a class="headerlink" href="#excessive-traffic" title="Link to this heading">#</a></h3> |
| <p>gRPC will spawn up to max threads quota of threads for concurrent clients. Those |
| threads are not necessarily cleaned up (a “cached thread pool” in Java parlance). |
| glibc malloc clears some per thread state and the default tuning never clears |
| caches in some workloads.</p> |
| <p>gRPC’s default behaviour allows one server to accept many connections from many |
| different clients, but if requests do a lot of work (as they may under Flight), |
| the server may not be able to keep up. Configuring clients to retry |
| with backoff (and potentially connect to a different node), would give more |
| consistent quality of service.</p> |
| <div class="sd-tab-set docutils"> |
| <input checked="checked" id="sd-tab-item-2" name="sd-tab-set-1" type="radio"> |
| <label class="sd-tab-label" for="sd-tab-item-2"> |
| C++</label><div class="sd-tab-content docutils"> |
| <div class="highlight-cpp notranslate"><div class="highlight"><pre><span></span><span class="k">auto</span><span class="w"> </span><span class="n">options</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">FlightClientOptions</span><span class="o">::</span><span class="n">Defaults</span><span class="p">();</span> |
| <span class="c1">// Set the minimum time between subsequent connection attempts.</span> |
| <span class="n">options</span><span class="p">.</span><span class="n">generic_options</span><span class="p">.</span><span class="n">emplace_back</span><span class="p">(</span><span class="n">GRPC_ARG_MIN_RECONNECT_BACKOFF_MS</span><span class="p">,</span><span class="w"> </span><span class="mi">2000</span><span class="p">);</span> |
| </pre></div> |
| </div> |
| </div> |
| <input id="sd-tab-item-3" name="sd-tab-set-1" type="radio"> |
| <label class="sd-tab-label" for="sd-tab-item-3"> |
| Python</label><div class="sd-tab-content docutils"> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="c1"># Set the minimum time between subsequent connection attempts.</span> |
| <span class="n">generic_options</span> <span class="o">=</span> <span class="p">[(</span><span class="s2">"GRPC_ARG_MIN_RECONNECT_BACKOFF_MS"</span><span class="p">,</span> <span class="mi">2000</span><span class="p">)]</span> |
| <span class="n">client</span> <span class="o">=</span> <span class="n">pyarrow</span><span class="o">.</span><span class="n">flight</span><span class="o">.</span><span class="n">FlightClient</span><span class="p">(</span><span class="n">server_uri</span><span class="p">,</span> <span class="n">generic_options</span><span class="o">=</span><span class="n">generic_options</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| </section> |
| <section id="limiting-doput-batch-size"> |
| <h3>Limiting DoPut Batch Size<a class="headerlink" href="#limiting-doput-batch-size" title="Link to this heading">#</a></h3> |
| <p>You may wish to limit the maximum batch size a client can submit to a server through |
| DoPut, to prevent a request from taking up too much memory on the server. On |
| the client-side, set <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight19FlightClientOptions22write_size_limit_bytesE" title="arrow::flight::FlightClientOptions::write_size_limit_bytes"><code class="xref cpp cpp-member docutils literal notranslate"><span class="pre">arrow::flight::FlightClientOptions::write_size_limit_bytes</span></code></a>. |
| On the server-side, set the gRPC option <code class="docutils literal notranslate"><span class="pre">GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH</span></code>. |
| The client-side option will return an error that can be retried with smaller batches, |
| while the server-side limit will close out the connection. Setting both can be wise, since |
| the former provides a better user experience but the latter may be necessary to defend |
| against impolite clients.</p> |
| </section> |
| <section id="closing-unresponsive-connections"> |
| <h3>Closing unresponsive connections<a class="headerlink" href="#closing-unresponsive-connections" title="Link to this heading">#</a></h3> |
| <ol class="arabic"> |
| <li><p>A stale call can be closed using |
| <a class="reference internal" href="api/flight.html#_CPPv4N5arrow6flight17FlightCallOptions10stop_tokenE" title="arrow::flight::FlightCallOptions::stop_token"><code class="xref cpp cpp-member docutils literal notranslate"><span class="pre">arrow::flight::FlightCallOptions::stop_token</span></code></a>. This requires recording the |
| stop token at call establishment time.</p> |
| <div class="sd-tab-set docutils"> |
| <input checked="checked" id="sd-tab-item-4" name="sd-tab-set-2" type="radio"> |
| <label class="sd-tab-label" for="sd-tab-item-4"> |
| C++</label><div class="sd-tab-content docutils"> |
| <div class="highlight-cpp notranslate"><div class="highlight"><pre><span></span><span class="n">StopSource</span><span class="w"> </span><span class="n">stop_source</span><span class="p">;</span> |
| <span class="n">FlightCallOptions</span><span class="w"> </span><span class="n">options</span><span class="p">;</span> |
| <span class="n">options</span><span class="p">.</span><span class="n">stop_token</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">stop_source</span><span class="p">.</span><span class="n">token</span><span class="p">();</span> |
| <span class="n">stop_source</span><span class="p">.</span><span class="n">RequestStop</span><span class="p">(</span><span class="n">Status</span><span class="o">::</span><span class="n">Cancelled</span><span class="p">(</span><span class="s">"StopSource"</span><span class="p">));</span> |
| <span class="n">flight_client</span><span class="o">-></span><span class="n">DoAction</span><span class="p">(</span><span class="n">options</span><span class="p">,</span><span class="w"> </span><span class="p">{});</span> |
| </pre></div> |
| </div> |
| </div> |
| </div> |
| </li> |
| <li><p>Use call timeouts. (This is a general gRPC best practice.)</p> |
| <div class="sd-tab-set docutils"> |
| <input checked="checked" id="sd-tab-item-5" name="sd-tab-set-3" type="radio"> |
| <label class="sd-tab-label" for="sd-tab-item-5"> |
| C++</label><div class="sd-tab-content docutils"> |
| <div class="highlight-cpp notranslate"><div class="highlight"><pre><span></span><span class="n">FlightCallOptions</span><span class="w"> </span><span class="n">options</span><span class="p">;</span> |
| <span class="n">options</span><span class="p">.</span><span class="n">timeout</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">TimeoutDuration</span><span class="p">{</span><span class="mf">0.2</span><span class="p">};</span> |
| <span class="n">Status</span><span class="w"> </span><span class="n">status</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">client</span><span class="o">-></span><span class="n">GetFlightInfo</span><span class="p">(</span><span class="n">options</span><span class="p">,</span><span class="w"> </span><span class="n">FlightDescriptor</span><span class="p">{}).</span><span class="n">status</span><span class="p">();</span> |
| </pre></div> |
| </div> |
| </div> |
| <input id="sd-tab-item-6" name="sd-tab-set-3" type="radio"> |
| <label class="sd-tab-label" for="sd-tab-item-6"> |
| Java</label><div class="sd-tab-content docutils"> |
| <div class="highlight-java notranslate"><div class="highlight"><pre><span></span><span class="n">Iterator</span><span class="o"><</span><span class="n">Result</span><span class="o">></span><span class="w"> </span><span class="n">results</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">client</span><span class="p">.</span><span class="na">doAction</span><span class="p">(</span><span class="k">new</span><span class="w"> </span><span class="n">Action</span><span class="p">(</span><span class="s">"hang"</span><span class="p">),</span><span class="w"> </span><span class="n">CallOptions</span><span class="p">.</span><span class="na">timeout</span><span class="p">(</span><span class="mf">0.2</span><span class="p">,</span><span class="w"> </span><span class="n">TimeUnit</span><span class="p">.</span><span class="na">SECONDS</span><span class="p">));</span> |
| </pre></div> |
| </div> |
| </div> |
| <input id="sd-tab-item-7" name="sd-tab-set-3" type="radio"> |
| <label class="sd-tab-label" for="sd-tab-item-7"> |
| Python</label><div class="sd-tab-content docutils"> |
| <div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">options</span> <span class="o">=</span> <span class="n">pyarrow</span><span class="o">.</span><span class="n">flight</span><span class="o">.</span><span class="n">FlightCallOptions</span><span class="p">(</span><span class="n">timeout</span><span class="o">=</span><span class="mf">0.2</span><span class="p">)</span> |
| <span class="n">result</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">do_action</span><span class="p">(</span><span class="n">action</span><span class="p">,</span> <span class="n">options</span><span class="o">=</span><span class="n">options</span><span class="p">)</span> |
| </pre></div> |
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| <li><p>Client timeouts are not great for long-running streaming calls, where it may |
| be hard to choose a timeout for the entire operation. Instead, what is often |
| desired is a per-read or per-write timeout so that the operation fails if it |
| isn’t making progress. This can be implemented with a background thread that |
| calls Cancel() on a timer, with the main thread resetting the timer every time |
| an operation completes successfully. For a fully-worked out example, see the |
| Cookbook.</p> |
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| <p class="admonition-title">Note</p> |
| <p>There is a long standing ticket for a per-write/per-read timeout |
| instead of a per call timeout (<a class="reference external" href="https://issues.apache.org/jira/browse/ARROW-6062">ARROW-6062</a>), but this is not (easily) |
| possible to implement with the blocking gRPC API.</p> |
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