[Bug Fix] Allow Partition data to be nullable in ManifestEntry #509
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Fokko
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Mar 10, 2024
pyiceberg/manifest.py
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| field_id=field.field_id, | ||
| name=field.name, | ||
| field_type=partition_field_to_data_file_partition_field(field.field_type), | ||
| required=False, |
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What do you think of carrying this over from the field?
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| required=False, | |
| required=field.required, |
I would prefer this because Avro schema's are translated to Iceberg, and then used in reading the files. In Avro reading an optional field is different than reading a required field (in the case of an optional field, it will first read a boolean checking if the value is there).
I checked locally in tests, and there the fields are not required.
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Sounds good @Fokko . I've made the corresponding change to partition_type to carry this over from the partition field as suggested 👍
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Similar to how the partition fields are already initialized with
required=Falseinpartition_type, we should setrequired=Falsein the manifest_entry schema within the ManifestFile.This PR introduces this fix first from @jqin61 's WIP PR, so other PRs that add partition values to manifest files can be unblocked.
Without this change, we cannot serialize None partition values into the ManifestEntry in the avro file.
Below WIP PRs require this change
Partitioned Write: #353
Add Files: #506