HyukjinKwon opened a new pull request #26501: [SPARK-29875][PYTHON][SQL][BRANCH-2.4] Avoid to use deprecated pyarrow.open_stream API in Spark 2.4.x URL: https://github.com/apache/spark/pull/26501 ### What changes were proposed in this pull request? This PR proposes to avoid to use deprecated PyArrow API `open_stream`. It was deprecated as of 0.12.0 (https://github.com/apache/arrow/pull/3244). Root cause is that we use separate forked process and each process emits the warning (printing once via "default" filter at `warnings` package); however, we should avoid to use deprecated APIs anyway. In the current master, it was fixed when we upgrade PyArrow from 0.10.0 to 0.12.0 at https://github.com/apache/spark/commit/16990f929921b3f784a85f3afbe1a22fbe77d895 ### Why are the changes needed? if we use PyArrow higher then 0.12.0, Spark 2.4.x shows a bunch of annoying warnings as below: ``` from pyspark.sql.functions import pandas_udf, PandasUDFType @pandas_udf("integer", PandasUDFType.SCALAR) # doctest: +SKIP def add_one(x): return x + 1 spark.range(100).select(add_one("id")).collect() ``` ``` UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " /usr/local/lib/python3.7/site-packages/pyarrow/__init__.py:157: UserWarning: pyarrow.open_stream is deprecated, please use pyarrow.ipc.open_stream warnings.warn("pyarrow.open_stream is deprecated, please use " ``` ### Does this PR introduce any user-facing change? Remove annoying warning messages. ### How was this patch tested? Manually tested.
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