Closed
Description
Apache Iceberg version
None
Please describe the bug 🐞
Issue
As shown in #895, setting a property to python's boolean value (True/False) will end up saving the boolean value as the string value "True"/"False". This is because the property dictionary's values are converted to string by transform_dict_value_to_str implemented in #504.
So True -> "True"
Fix
I can see this as a common footgun. Let's add a fix so that any boolean in the properties dictionary values are converted to its lowercase string.
Example
As a concrete example:
catalog.create_table(
"default.example",
schema=Schema(
NestedField(1, "created_at", TimestampType(), required=True)
),
properties={"write.parquet.bloom-filter-enabled.column.material_id": True},
)
Will set the property as
{"write.parquet.bloom-filter-enabled.column.material_id": "True"}
But the expected value should be
{"write.parquet.bloom-filter-enabled.column.material_id": "true"}