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[Python] pa.array raises for mixed scalar types (float16 + int)

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pa.array raises with mixed scalars for np.float16 and a numpy int:  ```java In [1]: import numpy as np ...: import pyarrow as pa ...: pa.array([np.float16(1.5), np.int64(5)]) --------------------------------------------------------------------------- ArrowInvalid Traceback (most...

asfimport

Write Dataset with file_visitor core dump

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### Describe the bug, including details regarding any error messages, version, and platform. # Describe Call pyarrow.dataset write_dataset with file_visitor will core dump. If not pass file_visitor, write_dataset running success....

wingerted

### Describe the enhancement requested In https://github.com/apache/arrow/pull/14508#issuecomment-1292178354, it was proposed that `google::protobuf::ShutdownProtobufLibrary` should be called after all tests that use protobuf. We should move [`protobuf_test_util.cc`](https://github.com/apache/arrow/blob/main/cpp/src/arrow/engine/substrait/protobuf_test_util.cc) into a more common location...

alinaliBQ

[C++][Parquet] Integer dictionary bitwidth preservation breaks multi-file read behaviour in pyarrow 20

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### Describe the bug, including details regarding any error messages, version, and platform. This issue was first posed as a question in #30302. I repeat the text here for convenience....

cjrh

### Describe the bug, including details regarding any error messages, version, and platform. When setting up the Meson configuration, we set it to create release builds by default. However, with...

WillAyd

GH-46179: [Python] Bump index level once if pandas df already contains __index_level_i__ column

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### Rationale for this change ### What changes are included in this PR? ### Are these changes tested? ### Are there any user-facing changes? * GitHub Issue: #46179

AlenkaF

[Python] Table.from_pandas creates duplicate column names if the dataframe already contains __index_level_i__ columns

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### Describe the bug, including details regarding any error messages, version, and platform. The pandas -> arrow conversion adds a `__inex_level_i__` column if the dataframe has an unnamed it wants...

jorisvandenbossche

GH-46677: [C++] Expose an BinaryViewBuilder interface for append a binary and multiple subslice

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### Rationale for this change see https://github.com/apache/arrow/issues/46677 ### What changes are included in this PR? see https://github.com/apache/arrow/issues/46677 ### Are these changes tested? Yes ### Are there any user-facing changes? No...

IndifferentArea

GH-45747: [C++] Remove deprecated ObjectType and FileStatistics, refactor hdfs code

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### Rationale for this change `ObjectType` and `FileStatistics` in io/hdfs.h have been deprecated for a while and can be removed. ### What changes are included in this PR? `ObjectType` and...

AlenkaF

### Describe the enhancement requested Remove deprecated `ObjectType` and `FileStatistics` in io/hdfs.h in favour of FileSystem API in arrow::fs. ### Component(s) C++

AlenkaF