Anja Boskovic created ARROW-17464:
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Summary: Support float16 in writing/reading parquet
Key: ARROW-17464
URL: https://issues.apache.org/jira/browse/ARROW-17464
Project: Apache Arrow
Issue Type: Improvement
Components: C++, Python
Reporter: Anja Boskovic
Assignee: Anja Boskovic
Half-float values are not supported in Parquet. Here is a previous issue that
talks about that: https://issues.apache.org/jira/browse/PARQUET-1647
So, this will not work:
{{{{import pyarrow as pa}}{{import pyarrow.parquet as pq}}{{import numpy as
np}}{{arr = pa.array(np.float16([0.1, 2.2, 3]))}}{{table = pa.table(\{'a':
arr})}}{{pq.write_table(table, "test_halffloat.parquet")}}}}
{{This is a proposal to store float16 values in Parquet as FixedSizeBinary, and
then restore them to float16 when reading them back in.{{{}{}}}}}
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