Re: IO considerations for PyArrow

2016-06-17 Thread Uwe Korn
Hello Wes, the concept sounds sensible and really useful. Probably the implementation will reside in the beginning fully inside of Arrow but do you plan to split it up into a separate package later on? Cheers Uwe On 16.06.16 03:35, Wes McKinney wrote: Hi folks, I put some more thought

Timestamps with different precision / Timedeltas

2016-06-21 Thread Uwe Korn
Hello, in addition to categoricals, we also miss at the moment a conversion from Timestamps in Pandas/NumPy to Arrow. Currently we only have two (exact) resolutions for them: DATE for days and TIMESTAMP for milliseconds. As https://docs.scipy.org/doc/numpy/reference/arrays.datetime.html

Re: Timestamps with different precision / Timedeltas

2016-07-14 Thread Uwe Korn
er/blob/master/cpp/src/feather/metadata.fbs#L78 [4]: https://github.com/apache/parquet-format/blob/parquet-format-2.0.0/src/thrift/parquet.thrift On Tue, Jun 21, 2016 at 1:40 PM, Uwe Korn <uw...@xhochy.com> wrote: Hello, in addition to categoricals, we also miss at the moment a conversion

Re: Arrow Board Report: Request for Feedback

2016-07-11 Thread Uwe Korn
, Wes McKinney <wesmck...@gmail.com> wrote: hi Jacques, I would mention there's been a significant synergy between C++ efforts in Apache Parquet to build a bridge between the projects (which will be a nice proof-of-concept of the benefits of the common in-memory columnar layer). Uwe Korn ha

Re: Arrow-Parquet integration location (Was: Arrow cpp travis-ci build broken)

2016-09-06 Thread Uwe Korn
Hello, I'm also in favour of switching the dependency direction between Parquet and Arrow as this would avoid a lot of duplicate code in both projects as well as parquet-cpp profiting from functionality that is available in Arrow. @wesm: go ahead with the JIRAs and I'll add comments or will

Re: Arrow package for Python

2016-09-08 Thread Uwe Korn
Hello Julien, what I have mentioned in the sync up was that I'm able to build a binary Python package ("wheel") that should be portable to all recent Linux versions. This is just some packaging around the already available source code in the arrow repository. There are still some bugs in the

Re: [VOTE] Release Apache Arrow 0.1.0 - rc2

2016-10-06 Thread Uwe Korn
Hello, MacOS 10.11 (Java 1.8.0_102) build cpp and run tests: ok build python and run tests: ok build java: ok java tests failed: Failed tests: TestArrowFile.testWriteReadComplex:236->validateComplexContent:261 expected:<1> but was:<-9>

[jira] [Created] (ARROW-7008) [Python] pyarrow.chunked_array([array]) fails on array with

2019-10-28 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-7008: --- Summary: [Python] pyarrow.chunked_array([array]) fails on array with Key: ARROW-7008 URL: https://issues.apache.org/jira/browse/ARROW-7008 Project: Apache Arrow

[jira] [Created] (ARROW-6919) [Python] Expose more builders in Cython

2019-10-17 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-6919: --- Summary: [Python] Expose more builders in Cython Key: ARROW-6919 URL: https://issues.apache.org/jira/browse/ARROW-6919 Project: Apache Arrow Issue Type: Improvement

[jira] [Created] (ARROW-6996) [Python] Expose boolean filter kernel on Table

2019-10-25 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-6996: --- Summary: [Python] Expose boolean filter kernel on Table Key: ARROW-6996 URL: https://issues.apache.org/jira/browse/ARROW-6996 Project: Apache Arrow Issue Type

[jira] [Created] (ARROW-7250) Undefined symbols for StringToFloatConverter::Impl with clang 4.x

2019-11-24 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-7250: --- Summary: Undefined symbols for StringToFloatConverter::Impl with clang 4.x Key: ARROW-7250 URL: https://issues.apache.org/jira/browse/ARROW-7250 Project: Apache Arrow

[jira] [Created] (ARROW-6873) [Python] Stale CColumn reference break Cython cimport pyarrow

2019-10-14 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-6873: --- Summary: [Python] Stale CColumn reference break Cython cimport pyarrow Key: ARROW-6873 URL: https://issues.apache.org/jira/browse/ARROW-6873 Project: Apache Arrow

[jira] [Created] (ARROW-8007) [Python] Remove unused and defunct assert_get_object_equal in plasma tests

2020-03-05 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8007: --- Summary: [Python] Remove unused and defunct assert_get_object_equal in plasma tests Key: ARROW-8007 URL: https://issues.apache.org/jira/browse/ARROW-8007 Project: Apache Arrow

[jira] [Created] (ARROW-8008) [C++/Python] Framework Python is preferred even though not the activated one

2020-03-05 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8008: --- Summary: [C++/Python] Framework Python is preferred even though not the activated one Key: ARROW-8008 URL: https://issues.apache.org/jira/browse/ARROW-8008 Project: Apache

[jira] [Created] (ARROW-7493) [Python] Expose sum kernel in pyarrow.compute and support ChunkedArray inputs

2020-01-03 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-7493: --- Summary: [Python] Expose sum kernel in pyarrow.compute and support ChunkedArray inputs Key: ARROW-7493 URL: https://issues.apache.org/jira/browse/ARROW-7493 Project: Apache

[jira] [Created] (ARROW-8350) [Python] Implement to_numpy on ChunkedArray

2020-04-06 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8350: --- Summary: [Python] Implement to_numpy on ChunkedArray Key: ARROW-8350 URL: https://issues.apache.org/jira/browse/ARROW-8350 Project: Apache Arrow Issue Type

[jira] [Created] (ARROW-8359) [C++/Python] Enable aarch64/ppc64le build in conda recipes

2020-04-06 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8359: --- Summary: [C++/Python] Enable aarch64/ppc64le build in conda recipes Key: ARROW-8359 URL: https://issues.apache.org/jira/browse/ARROW-8359 Project: Apache Arrow Issue

[jira] [Created] (ARROW-8281) [R] Name collision of arrow.dll on Windows

2020-03-31 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8281: --- Summary: [R] Name collision of arrow.dll on Windows Key: ARROW-8281 URL: https://issues.apache.org/jira/browse/ARROW-8281 Project: Apache Arrow Issue Type

[jira] [Created] (ARROW-8284) [C++][Dataset] Schema evolution for timestamp columns

2020-03-31 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8284: --- Summary: [C++][Dataset] Schema evolution for timestamp columns Key: ARROW-8284 URL: https://issues.apache.org/jira/browse/ARROW-8284 Project: Apache Arrow Issue Type

[jira] [Created] (ARROW-8285) [Python][Dataset] ScalarExpression doesn't accept numpy scalars

2020-03-31 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8285: --- Summary: [Python][Dataset] ScalarExpression doesn't accept numpy scalars Key: ARROW-8285 URL: https://issues.apache.org/jira/browse/ARROW-8285 Project: Apache Arrow

[jira] [Created] (ARROW-8288) [Python] Expose with_ modifiers on DataType

2020-03-31 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8288: --- Summary: [Python] Expose with_ modifiers on DataType Key: ARROW-8288 URL: https://issues.apache.org/jira/browse/ARROW-8288 Project: Apache Arrow Issue Type

[jira] [Created] (ARROW-8283) [C++/Python][Dataset] Non-existent files are silently dropped in pa.dataset.FileSystemDataset

2020-03-31 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8283: --- Summary: [C++/Python][Dataset] Non-existent files are silently dropped in pa.dataset.FileSystemDataset Key: ARROW-8283 URL: https://issues.apache.org/jira/browse/ARROW-8283

[jira] [Created] (ARROW-8282) [C++/Python][Dataset] Support schema evolution for integer columns

2020-03-31 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8282: --- Summary: [C++/Python][Dataset] Support schema evolution for integer columns Key: ARROW-8282 URL: https://issues.apache.org/jira/browse/ARROW-8282 Project: Apache Arrow

[jira] [Created] (ARROW-8571) [C++] Switch AppVeyor image to VS 2017

2020-04-23 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8571: --- Summary: [C++] Switch AppVeyor image to VS 2017 Key: ARROW-8571 URL: https://issues.apache.org/jira/browse/ARROW-8571 Project: Apache Arrow Issue Type: Improvement

[jira] [Created] (ARROW-8149) [C++/Python] Enable CUDA Support in conda recipes

2020-03-18 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8149: --- Summary: [C++/Python] Enable CUDA Support in conda recipes Key: ARROW-8149 URL: https://issues.apache.org/jira/browse/ARROW-8149 Project: Apache Arrow Issue Type: New

[jira] [Created] (ARROW-8159) [Python] pyarrow.Schema.from_pandas doesn't support ExtensionDtype

2020-03-19 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8159: --- Summary: [Python] pyarrow.Schema.from_pandas doesn't support ExtensionDtype Key: ARROW-8159 URL: https://issues.apache.org/jira/browse/ARROW-8159 Project: Apache Arrow

[jira] [Created] (ARROW-8174) [Python] Refactor context_choices in test_cuda_numba_interop to be a module level fixture

2020-03-20 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8174: --- Summary: [Python] Refactor context_choices in test_cuda_numba_interop to be a module level fixture Key: ARROW-8174 URL: https://issues.apache.org/jira/browse/ARROW-8174

[jira] [Created] (ARROW-8941) [C++/Python] arrow-nightlies conda repository is full

2020-05-26 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8941: --- Summary: [C++/Python] arrow-nightlies conda repository is full Key: ARROW-8941 URL: https://issues.apache.org/jira/browse/ARROW-8941 Project: Apache Arrow Issue Type

[jira] [Created] (ARROW-8962) [C++] Linking failure with clang-4.0

2020-05-27 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-8962: --- Summary: [C++] Linking failure with clang-4.0 Key: ARROW-8962 URL: https://issues.apache.org/jira/browse/ARROW-8962 Project: Apache Arrow Issue Type: Bug

[jira] [Created] (ARROW-9024) [C++/Python] Install anaconda-client in conda-clean job

2020-06-03 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-9024: --- Summary: [C++/Python] Install anaconda-client in conda-clean job Key: ARROW-9024 URL: https://issues.apache.org/jira/browse/ARROW-9024 Project: Apache Arrow Issue

[jira] [Created] (ARROW-9023) [C++] Use mimalloc conda package

2020-06-03 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-9023: --- Summary: [C++] Use mimalloc conda package Key: ARROW-9023 URL: https://issues.apache.org/jira/browse/ARROW-9023 Project: Apache Arrow Issue Type: Improvement

[jira] [Created] (ARROW-9066) [Python] Raise correct error in isnull()

2020-06-08 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-9066: --- Summary: [Python] Raise correct error in isnull() Key: ARROW-9066 URL: https://issues.apache.org/jira/browse/ARROW-9066 Project: Apache Arrow Issue Type: Bug

[jira] [Created] (ARROW-9026) [C++/Python] Force package removal from arrow-nightlies conda repository

2020-06-03 Thread Uwe Korn (Jira)
Uwe Korn created ARROW-9026: --- Summary: [C++/Python] Force package removal from arrow-nightlies conda repository Key: ARROW-9026 URL: https://issues.apache.org/jira/browse/ARROW-9026 Project: Apache Arrow