Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Statistics on ParquetFile subset. #940

Merged
merged 3 commits into from
Oct 29, 2024
+12 −3
Merged

Statistics on ParquetFile subset. #940

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
f437e59
Statistics can be create from ParquetFile subset.
yohplala Oct 29, 2024
bbc1ff2
Extending test 'test_statistics' to validate.
yohplala Oct 29, 2024
186ecb8
Merge branch 'main' into statistics_on_pf_subset
martindurant Oct 29, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion fastparquet/api.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -260,7 +260,7 @@ def columns(self):

@property
def statistics(self):
if self._statistics is None:
if not hasattr(self, '_statistics') or self._statistics is None:
self._statistics = statistics(self)
return self._statistics

Expand Down
13 changes: 11 additions & 2 deletions fastparquet/test/test_api.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -44,14 +44,23 @@ def test_statistics(tempdir):
p = ParquetFile(fn)

s = statistics(p)
expected = {'distinct_count': {'x': [None, None],
expected1 = {'distinct_count': {'x': [None, None],
'y': [None, None],
'z': [None, None]},
'max': {'x': [2, 3], 'y': [2.0, 1.0], 'z': ['b', 'c']},
'min': {'x': [1, 3], 'y': [1.0, 1.0], 'z': ['a', 'c']},
'null_count': {'x': [0, 0], 'y': [0, 0], 'z': [0, 0]}}

assert s == expected
assert s == expected1

expected2 = {'distinct_count': {'x': [None],
'y': [None],
'z': [None]},
'max': {'x': [3], 'y': [1.0], 'z': ['c']},
'min': {'x': [3], 'y': [1.0], 'z': ['c']},
'null_count': {'x': [0], 'y': [0], 'z': [0]}}

assert p[-1].statistics == expected2


def test_logical_types(tempdir):
Expand Down
Loading