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perf: Faster local data comparison using idenitity #1738

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Merged
TrevorBergeron merged 2 commits into from
May 16, 2025
Merged

perf: Faster local data comparison using idenitity #1738

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perf: Faster local data comparison using idenitity
TrevorBergeron May 14, 2025
b6f397e
Merge branch 'main' into identity_local_data_compare
TrevorBergeron May 15, 2025
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4 changes: 2 additions & 2 deletions bigframes/core/local_data.py
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Original file line number Diff line number Diff line change
Expand Up @@ -54,8 +54,8 @@ def from_arrow(cls, table: pa.Table) -> LocalTableMetadata:

@dataclasses.dataclass(frozen=True)
class ManagedArrowTable:
data: pa.Table = dataclasses.field(hash=False)
schema: schemata.ArraySchema = dataclasses.field(hash=False)
data: pa.Table = dataclasses.field(hash=False, compare=False)
schema: schemata.ArraySchema = dataclasses.field(hash=False, compare=False)
id: uuid.UUID = dataclasses.field(default_factory=uuid.uuid4)

@functools.cached_property
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13 changes: 13 additions & 0 deletions tests/unit/test_local_data.py
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Expand Up @@ -64,3 +64,16 @@ def test_local_data_well_formed_round_trip_sliced():
result.reset_index(drop=True),
check_dtype=False,
)


def test_local_data_equal_self():
local_entry = local_data.ManagedArrowTable.from_pandas(pd_data)
assert local_entry == local_entry
assert hash(local_entry) == hash(local_entry)


def test_local_data_not_equal_other():
local_entry = local_data.ManagedArrowTable.from_pandas(pd_data)
local_entry2 = local_data.ManagedArrowTable.from_pandas(pd_data[::2])
assert local_entry != local_entry2
assert hash(local_entry) != hash(local_entry2)